WO2006061357A1 - X-ray exposure device for use in a mammography apparatus - Google Patents
X-ray exposure device for use in a mammography apparatus Download PDFInfo
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- WO2006061357A1 WO2006061357A1 PCT/EP2005/056444 EP2005056444W WO2006061357A1 WO 2006061357 A1 WO2006061357 A1 WO 2006061357A1 EP 2005056444 W EP2005056444 W EP 2005056444W WO 2006061357 A1 WO2006061357 A1 WO 2006061357A1
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- Prior art keywords
- ray exposure
- exposure machine
- machine according
- detector
- measuring surface
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/502—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of breast, i.e. mammography
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
- A61B6/0414—Supports, e.g. tables or beds, for the body or parts of the body with compression means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating thereof
- A61B6/587—Alignment of source unit to detector unit
Definitions
- the invention relates to an X-ray exposure machine for a mammography device according to the preamble of patent claim 1;
- Such an X-ray exposure machine is known from the book "Mammadiagnostik für MTRA und ⁇ soured" by Prof. Dr. Heinz Otto (Springer-Verlag, 2002).
- mammography devices In mammography of a breast, it is necessary due to an exception compared to other parts of the body to X-rays relatively permeable fabric for a high-contrast radiographs ⁇ , permanently very adjust the x-ray just to the particular shape of the breast in its exposure. Therefore, mammography devices usually have an X-ray exposure machine that controls the exposure time depending on a dose of the X-ray penetrating the breast as measured by a detector.
- the mammography device shown in FIG. 4.2 shown in the book “Mammadiagnostik für MTRA und ⁇ Anlagen” by Prof. Dr. Heinz Otto (Springer-Verlag, 2002, ISBN 3540419551) on page 23 is a mammography device with a
- Metal chamber detector called an automatic exposure control which can be positioned by parallel displacement in adaptation to a to be examined breast.
- Be ⁇ humor of the exposure it has been found suitable particularly Ge, front the detector below the
- EP 0 471 883 B1 discloses a position- bound detector for an automatic exposure system formed from a matrix of detector elements, the detector measuring surface of which is referred to as "measuring field" in each case different detector elements is automatically selectable.
- the invention is based on the object of an exposure machines ⁇ to create, which allows a simple and precise positio ⁇ discrimination of its detector measurement area with respect to a person to be ⁇ seeking breast.
- the position of the detector measuring surface during its positioning can be read directly in relation to the breast, whereby on the one hand a simple and thus also fast and on the other hand an exact and therefore in the sense an avoidance of incorrect exposures efficient positioning is enabled.
- the display is provided in the form of an optical signal which is dependent on the respective position of the detector measuring surface and projected in particular onto the breast.
- Such a display has the further advantage that it can be removed by simply switching off the optical signal from the radiation area of the X-radiation used for the examination.
- FIG. 1 shows in side view the U-arm of an X-ray exposure Mammographiege- Raets with a machine comprising a movable laser beam source for display ei ⁇ ner respective position of a movable detector;
- FIG. 2 shows a side view of the U-arm of an X-ray exposure Mammographiege- Raets with a machine comprising a tiltable light source to display a jewei ⁇ time position of a read part of each surface of a positional detector
- 3 shows a side view of the U-arm of a mammography apparatus with an X-ray exposure machine with a displaceable detector according to FIG. 1 and with a wire displaceable in a light beam for indicating the respective position of the detector by shadowing the wire;
- FIG. 4 shows a side view of the U-arm of a mammography apparatus with an X-ray exposure machine with a displaceable detector according to FIG. 1 and with a mechanical pointer for indicating the respective position of the detector;
- FIG. 5 shows a top view of a detail of the U-arm according to FIG. 1 with the display of the position of the detector measuring surface by a laser beam line;
- FIG. 6 shows a plan view of the detail according to FIG. 5 with the display showing a light projection corresponding to the shape of a circular segment-shaped detector measuring surface.
- FIGS. 1-4 shows, in its basic structure, a U-arm 1-4 of a mammography apparatus, which also accommodates the elements of the exposure apparatus according to the invention. 1-4, a carrier part 5, an X-ray source 6, an object table 7 with a film-foil system 8 and a breast which can be compressed on the object table 7 and compressed by a compression unit 11 which can be height-adjusted in the direction 10 9.
- a carrier part 5 an X-ray source 6
- an object table 7 with a film-foil system 8 and a breast which can be compressed on the object table 7 and compressed by a compression unit 11 which can be height-adjusted in the direction 10 9.
- four embodiments of the automatic exposure device according to the invention are shown with a detectable with respect to the chest detector measuring surface, where various detector designs and means for generating a display 12, 33 of the respective position of the detector measuring surface in the field of view are provided on the chest 9.
- FIG. 1 shows a lateral view of a U-arm 1 with a first embodiment of an exposure apparatus according to the invention comprising a detector 13 which is positionable together with a detector measuring surface 14 as part of the detector 13 with respect to the breast 9 by shifting in the direction 15, and a synchronously with the detector displaceable source 16 of an optical signal.
- a particularly sharp display 12 is generated by an optical signal in the form ei ⁇ nes laser beam 17, wherein a parallel displacement of the laser beam 17 is provided dependent on the direction of displacement 18 of the respective position of the detector measuring surface 14 in a particularly simple manner.
- the source 16 for the laser beam 17 is arranged structurally simply above the breast 9 in the direction of the parallel displaceability of the laser beam 17 in the direction of displacement 18 parallel to the carrier part 5 of the U-arm 1.
- the parallel displacement with this vertical vice beam incident on the breast an otherwise necessary consideration eliminates a change in distance between the source 16 and the projected adorned display 12.
- an electronic control device 38 through which the source 16 of the laser beam 17 in its displacement ⁇ position according to each of a sensor 36, here by means of an infrared signal 37, measured position of the De ⁇ detector 13 is controllable.
- FIG. 2 shows a lateral view of a U-arm 2 with another embodiment of an exposure apparatus according to the invention, which contains a position-bound, large-area detector 19 with matrix elements 20.1-20.11, which can be read separately in the sense of a distance shift, and a tiltable source 22 of an optical signal.
- a detector measuring surface 21 can be selected, which is displaced by a selection of a respective other subarea.
- an optical signal in the form of a likewise consistent with good Detect ⁇ bility advantageous light beam 23 is provided, the direction in existing Sonders simple manner in its direction depending on the position of the detector measuring surface 21 in swiveling 24 and is thus changeable in its radiation angle relative to the breast.
- This is made possible with particularly little technical effort by means of an arrangement of the source 22 of the light beam 23 on the compression unit 11 which can be tilted correspondingly by swiveling.
- This type of on ⁇ arrangement is particularly compact and allows the mammography apparatus a particularly collision-free with an insertion portion 25 of an existing during the examination X-ray radiation, space-saving construction 10.
- an electronic control device 39 is provided according to an advantageous embodiment of the invention by which the source 22 of the light beam 23 in its tilting angle according to the respective position of ⁇ read, the read-out region 21 corresponding partial area is controllable.
- Figure 3 shows a side view of a U-arm with a third embodiment of an exposure machine according to the invention, compared to the exposure apparatus shown in Figure 1 instead of the direct beam display on the chest a displaceable in a light beam 26 wire 27 for displaying the respective position of the detector 13 by Cast shadow 28 of this wire on the chest.
- a displaceable in a light beam 26 wire 27 for displaying the respective position of the detector 13 by Cast shadow 28 of this wire on the chest.
- it is dependent on the position of the detector 13 in the direction of displacement 29 slidable shadow 28 and on the other hand, the position of the breast itself by their lighting ⁇ tion with the light beam 26 well recognizable.
- the effort for generating the aforementioned light beam 26 can be substantially reduced by the joint use of a provided for setting the X-ray aperture light visor - as described in more detail below.
- FIG. 4 shows, in a side view, a U-arm with a fourth exemplary embodiment of an exposure apparatus according to the invention, which is opposite to that shown in FIG.
- Exposure machine instead of the laser beam source 16 has a movable with the detector mechanical pointer 33 in the field of view on the chest 9 to display the respective position of the detector 13.
- FIG. 5 shows a plan view of a section of the U-arm according to FIG. 1, the object table 7, the compression unit 11, the breast 9 and the displaceable in the direction 18 display 12, here in the form of a laser beam line, are shown.
- FIG. 6 shows a plan view of the detail of the U-arm according to FIG. 5, wherein a display 34 which is displaceable in the direction of displacement 35 is provided by a light projection corresponding to the shape of a circular segment-shaped detector measuring surface, in order to adapt the exposure time to the exact time Breast texture necessary to make complete coverage of the detector area through the breast displayable.
- the invention can in principle be summarized as follows:
- the invention relates to an X-ray exposure machine for a mammography device having a tersuchende with respect to a to un ⁇ breast 9 positionable detector measuring surface 14, whose respective position for easy and exact positioning of the detector measuring surface 14 by a display 12 , in particular in the form of an optical signal, in the field of vision the breast 9 can be displayed.
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Abstract
Description
Beschreibungdescription
Röntgenbelichtungsautomat für ein MammographiegerätX-ray exposure machine for a mammography device
Die Erfindung betrifft einen Röntgenbelichtungsautomaten für ein Mammographiegerät gemäß Oberbegriff des Patentanspruchs 1; ein derartiger Röntgenbelichtungsautomat ist aus dem Buch „Mammadiagnostik für MTRA und Ärzte" von Prof. Dr. Heinz Otto (Springer-Verlag, 2002) bekannt.The invention relates to an X-ray exposure machine for a mammography device according to the preamble of patent claim 1; Such an X-ray exposure machine is known from the book "Mammadiagnostik für MTRA und Ärzte" by Prof. Dr. Heinz Otto (Springer-Verlag, 2002).
Bei der Mammographie einer Brust ist es aufgrund eines im Vergleich zu anderen Körperteilen für Röntgenstrahlung relativ durchlässigen Gewebes für eine kontrastreiche Röntgenauf¬ nahme erforderlich, die Röntgenaufnahme in ihrer Belichtungs- dauer sehr genau an die jeweilige Beschaffenheit der Brust anzupassen. Daher verfügen Mammographiegeräte üblicherweise über einen Röntgenbelichtungsautomaten, der abhängig von einer durch einen Detektor gemessenen Dosis der die Brust durchdringenden Röntgenstrahlung die Belichtungsdauer steu- ert.In mammography of a breast, it is necessary due to an exception compared to other parts of the body to X-rays relatively permeable fabric for a high-contrast radiographs ¬, permanently very adjust the x-ray just to the particular shape of the breast in its exposure. Therefore, mammography devices usually have an X-ray exposure machine that controls the exposure time depending on a dose of the X-ray penetrating the breast as measured by a detector.
Zur Bestimmung der Belichtungsdauer ist aus der in dem Buch „Mammadiagnostik für MTRA und Ärzte" von Prof. Dr. Heinz Otto (Springer-Verlag, 2002, ISBN 3540419551) auf Seite 23 darge- stellten Abbildung 4.2 eine Mammographiegerät mit einemTo determine the exposure time, the mammography device shown in FIG. 4.2 shown in the book "Mammadiagnostik für MTRA und Ärzte" by Prof. Dr. Heinz Otto (Springer-Verlag, 2002, ISBN 3540419551) on page 23 is a mammography device with a
„Messkammer" genannten Detektor einer Belichtungsautomatik bekannt, der durch paralleles Verschieben in Anpassung an eine zu untersuchende Brust positionierbar ist. Zur exakten Be¬ stimmung der Belichtungsdauer hat es sich als besonders ge- eignet herausgestellt, den Detektor unterhalb des vorderen"Metering chamber" detector called an automatic exposure control is known which can be positioned by parallel displacement in adaptation to a to be examined breast. For exact Be ¬ humor of the exposure, it has been found suitable particularly Ge, front the detector below the
Brustdrittels zu positionieren, da in diesem Brustbereich typischerweise relativ konstant Drüsengewebe mit repräsentati¬ ver Dichte vorhanden ist. Eine nicht genau an die jeweilige Brust angepasste Position des Detektors ist als häufigste Fehlerquelle für Fehlbelichtungen bekannt. Aus Seite 35, Abbildung 4.13 in dem vorgenannten Buch ist weiterhin ein Kompressionspaddel einer zur Kompression der zu untersuchenden Brust absenkbaren Kompressionseinheit bekannt, bei dem zur Orientierung bei einem Verschieben eines Detek- tors drei mögliche Detektorpositionen auf einem durchsichti¬ gen Teil gekennzeichnet sind.Breast third, as in this chest region is typically relatively constant glandular tissue with representati ¬ density. A not exactly adapted to the respective breast position of the detector is known as the most common source of error for incorrect exposures. From page 35, Figure 4.13 in the above-mentioned book, a compression paddle is furthermore a known compression of the lowerable to be examined breast compression unit, are presented in which, for orientation during a displacement of a Detek- tors three possible detector positions on a durchsichti ¬ gene part.
Im Unterschied zu dem vorgenannten Detektor mit einer durch Verschieben des Detektors positionsveränderlichen Detektor- messfläche ist aus der EP 0 471 883 Bl ein positionsgebunde¬ ner, aus einer Matrix von Detektorelementen gebildeter Detektor für eine Belichtungsautomatik bekannt, dessen „Messfeld" genannte Detektormessfläche durch Berücksichtigen jeweils verschiedener Detektorelemente automatisch auswählbar ist.In contrast to the aforementioned detector with a positionally variable detector measuring surface displaced by displacement of the detector, EP 0 471 883 B1 discloses a position- bound detector for an automatic exposure system formed from a matrix of detector elements, the detector measuring surface of which is referred to as "measuring field" in each case different detector elements is automatically selectable.
Der Erfindung liegt die Aufgabe zugrunde, einen Belichtungs¬ automaten zu schaffen, der eine einfache und exakte Positio¬ nierung seiner Detektormessfläche in Bezug auf eine zu unter¬ suchende Brust ermöglicht.The invention is based on the object of an exposure machines ¬ to create, which allows a simple and precise positio ¬ discrimination of its detector measurement area with respect to a person to be ¬ seeking breast.
Die Lösung dieser Aufgabe gelingt durch einen Belichtungsau¬ tomaten gemäß Patentanspruch 1; vorteilhafte Ausgestaltungen sind jeweils Gegenstand der Unteransprüche.The solution to this problem is achieved by a Belichtungsau ¬ tomatoes according to claim 1; advantageous embodiments are the subject of the dependent claims.
Durch die Anzeige der jeweiligen Position der Detektormessfläche im Sichtfeld auf die zu untersuchende Brust kann die Position der Detektormessfläche während ihrer Positionierung unmittelbar in Bezug auf die Brust abgelesen werden, wodurch einerseits eine einfache und somit auch schnelle sowie ande- rerseits eine exakte und daher im Sinne einer Vermeidung von Fehlbelichtungen effiziente Positionierung ermöglicht wird.By displaying the respective position of the detector measuring surface in the field of vision on the breast to be examined, the position of the detector measuring surface during its positioning can be read directly in relation to the breast, whereby on the one hand a simple and thus also fast and on the other hand an exact and therefore in the sense an avoidance of incorrect exposures efficient positioning is enabled.
Für eine technisch besonders einfach umsetzbare, mechanische Positionierung der Detektormessfläche ist ein Verschieben ei- nes diese Detektormessfläche enthaltenden Detektors vorgese¬ hen. Eine besonders verschleißfreie und einfach zu handhabende, elektronische Art der Positionierung wird durch Auslesen einer der Detektormessfläche jeweils entsprechenden Teilfläche eines positionsgebundenen Detektors ermöglicht; ein weiterer Vorteil besteht dabei darin, dass ein zu einer Ansteuerung der Teilfläche vorgesehenes elektronisches Steuersignal auch als Grundlage einer vorteilhaften elektronischen Steuerung der Anzeige nutzbar ist.For a particularly simple viable, mechanical positioning of the detector measuring surface displacement is egg hen containing nes detector vorgese ¬ this detector measuring surface. A particularly wear-free and easy-to-use, electronic type of positioning is made possible by reading out a partial area of a position-linked detector which corresponds in each case to the detector measuring surface; Another advantage consists in that an electronic control signal provided for controlling the partial surface can also be used as the basis for an advantageous electronic control of the display.
Im Sinne einer besonders guten Erkennbarkeit ist die Anzeige in Form eines von der jeweiligen Position der Detektormessfläche abhängigen, insbesondere auf die Brust projizierten, optischen Signals vorgesehen. Eine solche Anzeige hat den weiteren Vorteil, dass sie durch einfaches Abschalten des op- tischen Signals aus dem Strahlungsbereich der zur Untersuchung benutzten Röntgenstrahlung entfernbar ist.In the sense of a particularly good recognizability, the display is provided in the form of an optical signal which is dependent on the respective position of the detector measuring surface and projected in particular onto the breast. Such a display has the further advantage that it can be removed by simply switching off the optical signal from the radiation area of the X-radiation used for the examination.
Die Erfindung sowie weitere vorteilhafte Ausgestaltungen der Erfindung gemäß Merkmalen der Unteransprüche werden im fol- genden anhand von schematisch dargestellten Ausführungsbeispielen in der Zeichnung näher erläutert, ohne dass dadurch eine Beschränkung der Erfindung auf dieses Ausführungsbei¬ spiel erfolgt; es zeigen:The invention and further advantageous embodiments of the invention according to features of the subclaims are explained in more detail in the following by means of schematically illustrated embodiments in the drawing, without thereby limiting the invention to this Ausführungsbei ¬ game; show it:
FIG 1 in seitlicher Ansicht den U-Arm eines Mammographiege- räts mit einem Röntgenbelichtungsautomaten enthaltend eine verschiebbare Laserstrahlquelle zur Anzeige ei¬ ner jeweiligen Position eines verschiebbaren Detektors;1 shows in side view the U-arm of an X-ray exposure Mammographiege- Raets with a machine comprising a movable laser beam source for display ei ¬ ner respective position of a movable detector;
FIG 2 in seitlicher Ansicht den U-Arm eines Mammographiege- räts mit einem Röntgenbelichtungsautomaten enthaltend eine verkippbare Lichtquelle zur Anzeige einer jewei¬ ligen Position einer jeweils ausgelesenen Teilfläche eines positionsgebundenen Detektors; FIG 3 in seitlicher Ansicht den U-Arm eines Mammographiege- räts mit einem Röntgenbelichtungsautomaten mit einem verschiebbaren Detektor gemäß FIG 1 und mit einem in einem Lichtstrahlbündel verschiebbaren Draht zur An- zeige der jeweiligen Position des Detektors durch Schattenwurf des Drahts;2 shows a side view of the U-arm of an X-ray exposure Mammographiege- Raets with a machine comprising a tiltable light source to display a jewei ¬ time position of a read part of each surface of a positional detector; 3 shows a side view of the U-arm of a mammography apparatus with an X-ray exposure machine with a displaceable detector according to FIG. 1 and with a wire displaceable in a light beam for indicating the respective position of the detector by shadowing the wire;
FIG 4 in seitlicher Ansicht den U-Arm eines Mammographiege- räts mit einem Röntgenbelichtungsautomaten mit einem verschiebbaren Detektor gemäß FIG 1 und mit einem mechanischen Zeiger zur Anzeige der jeweiligen Position des Detektors;4 shows a side view of the U-arm of a mammography apparatus with an X-ray exposure machine with a displaceable detector according to FIG. 1 and with a mechanical pointer for indicating the respective position of the detector;
FIG 5 in Draufsicht einen Ausschnitt des U-Arms gemäß FIG 1 mit der Anzeige der Position der Detektormessfläche durch eine Laserstrahllinie;5 shows a top view of a detail of the U-arm according to FIG. 1 with the display of the position of the detector measuring surface by a laser beam line;
FIG 6 in Draufsicht den Ausschnitt gemäß FIG 5 mit der An¬ zeige durch eine der Form einer kreissegmentförmigen Detektormessfläche entsprechende Lichtprojektion.FIG. 6 shows a plan view of the detail according to FIG. 5 with the display showing a light projection corresponding to the shape of a circular segment-shaped detector measuring surface.
Figuren 1-4 zeigen jeweils in ihrem prinzipiellen Aufbau jeweils einen U-Arm 1-4 eines Mammographiegeräts, der auch die Elemente des erfindungsgemäßen Belichtungsautomaten aufnimmt. Als gleiche Bauteile sind in den Figuren 1-4 ein Trägerteil 5, eine Röntgenquelle 6, ein Objekttisch 7 mit einem Film- Folie-System 8 und eine zur Kompression einer auf dem Objekttisch 7 platzierten und durch eine in Richtung 10 höhenverstellbare Kompressionseinheit 11 komprimierbare Brust 9 dar- gestellt. Im Folgenden werden vier Ausführungsformen der erfindungsgemäßen Belichtungsautomatik mit einer in Bezug auf die Brust positionierbaren Detektormessfläche dargestellt, bei denen verschiedene Detektorausführungen und Mittel zur Erzeugung einer Anzeige 12, 33 der jeweiligen Position der Detektormessfläche im Sichtfeld auf die Brust 9 vorgesehen sind. Figur 1 zeigt in seitlicher Ansicht einen U-Arm 1 mit einem ersten Ausführungsbeispiel eines erfindungsgemäßen Belichtungsautomaten enthaltend einen Detektor 13, der gemeinsam mit einer Detektormessfläche 14 als Teil des Detektors 13 in Bezug auf die Brust 9 durch Verschieben in Richtung 15 positionierbar ist, sowie eine synchron mit dem Detektor verschiebbare Quelle 16 eines optischen Signals. Eine besonders scharfe Anzeige 12 ist durch ein optisches Signal in Form ei¬ nes Laserstrahls 17 erzeugbar, wobei in besonders einfacher Weise eine parallele Verschiebbarkeit des Laserstrahls 17 in Verschieberichtung 18 abhängig von der jeweiligen Position der Detektormessfläche 14 vorgesehen ist. Dazu ist die Quelle 16 für den Laserstrahl 17 konstruktiv einfach oberhalb der Brust 9 im Sinne der parallelen Verschiebbarkeit des Laser- Strahls 17 in Verschieberichtung 18 parallel verschiebbar an dem Trägerteil 5 des U-Arms 1 angeordnet. Durch die parallele Verschiebbarkeit mit dazu senkrechtem Lasterstrahleinfall auf die Brust entfällt eine ansonsten notwendige Berücksichtigung einer Abstandsänderung zwischen der Quelle 16 und der proji- zierten Anzeige 12. Als weiterer Teil des Belichtungsautoma¬ ten ist nach einer vorteilhaften Ausgestaltung der Erfindung eine elektronische Steuervorrichtung 38 vorgesehen, durch welche die Quelle 16 des Laserstrahls 17 in ihrer Verschiebe¬ position entsprechend der jeweils von einem Sensor 36, hier mittels eines Infrarotsignals 37, gemessenen Position des De¬ tektors 13 steuerbar ist.Each of FIGS. 1-4 shows, in its basic structure, a U-arm 1-4 of a mammography apparatus, which also accommodates the elements of the exposure apparatus according to the invention. 1-4, a carrier part 5, an X-ray source 6, an object table 7 with a film-foil system 8 and a breast which can be compressed on the object table 7 and compressed by a compression unit 11 which can be height-adjusted in the direction 10 9. In the following, four embodiments of the automatic exposure device according to the invention are shown with a detectable with respect to the chest detector measuring surface, where various detector designs and means for generating a display 12, 33 of the respective position of the detector measuring surface in the field of view are provided on the chest 9. 1 shows a lateral view of a U-arm 1 with a first embodiment of an exposure apparatus according to the invention comprising a detector 13 which is positionable together with a detector measuring surface 14 as part of the detector 13 with respect to the breast 9 by shifting in the direction 15, and a synchronously with the detector displaceable source 16 of an optical signal. A particularly sharp display 12 is generated by an optical signal in the form ei ¬ nes laser beam 17, wherein a parallel displacement of the laser beam 17 is provided dependent on the direction of displacement 18 of the respective position of the detector measuring surface 14 in a particularly simple manner. For this purpose, the source 16 for the laser beam 17 is arranged structurally simply above the breast 9 in the direction of the parallel displaceability of the laser beam 17 in the direction of displacement 18 parallel to the carrier part 5 of the U-arm 1. The parallel displacement with this vertical vice beam incident on the breast an otherwise necessary consideration eliminates a change in distance between the source 16 and the projected adorned display 12. As a further part of the Belichtungsautoma ¬ th is provided according to an advantageous embodiment of the invention, an electronic control device 38, through which the source 16 of the laser beam 17 in its displacement ¬ position according to each of a sensor 36, here by means of an infrared signal 37, measured position of the De ¬ detector 13 is controllable.
Figur 2 zeigt in seitlicher Ansicht einen U-Arm 2 mit einem anderen Ausführungsbeispiel eines erfindungsgemäßen Belich- tungsautomaten, der einen positionsgebundenen, großflächigen Detektor 19 mit im Sinne einer Abstandsverschiebung getrennt auslesbaren Matrixelementen 20.1-20.11 sowie eine verkippbare Quelle 22 eines optischen Signals enthält. Durch Auslesen ei¬ ner aus zumindest einem Matrixelement 20.1-20.11 bestehenden Teilfläche des Detektors 19 ist eine Detektormessfläche 21 auswählbar, die durch eine Auswahl einer jeweils anderen Teilfläche verschiebbar ist. Anstelle des Laserstrahls 17 aus Figur 1 ist ein optisches Signal in Form eines ebenfalls im Sinne einer guten Erkenn¬ barkeit vorteilhaften Lichtstrahls 23 vorgesehen, der in be- sonders einfacher Weise in seiner Richtung abhängig von der jeweiligen Position der Detektormessfläche 21 in Verschwenk- richtung 24 und somit in seinem Strahlungswinkel relativ zu der Brust änderbar ist. Dies wird mit besonders geringem technischen Aufwand durch eine entsprechend durch Verschwen- ken verkippbare Anordnung der Quelle 22 des Lichtstrahls 23 an der Kompressionseinheit 11 ermöglicht. Diese Art der An¬ ordnung ist besonders Platz sparend und ermöglicht eine mit einem Einblendungsbereich 25 einer während der Untersuchung vorhandenen Röntgenstrahlung besonders kollisionsfreie, Platz sparende Konstruktion des Mammographiegeräts 10. Da die Quel¬ le 22 des Lichtstrahls 23 gemeinsam mit der Kompressionseinheit 11 in Richtung 10 höhenverstellbar ist und daher unabhängig von der Höheneinstellung immer die gleiche räumliche Lage relativ zu der Anzeige 12 einnimmt, entfällt die Notwen- digkeit, bei einem der Position der Detektormessfläche ent¬ sprechenden Verkippen der Quelle 22 die Höheneinstellung berücksichtigen zu müssen. Als weiterer Teil des Belichtungsautomaten ist nach einer vorteilhaften Ausgestaltung der Erfindung eine elektronische Steuervorrichtung 39 vorgesehen, durch welche die Quelle 22 des Lichtstrahls 23 in ihrem Ver- kippungswinkel entsprechend der jeweiligen Position der aus¬ gelesenen, dem Auslesebereich 21 entsprechenden Teilfläche steuerbar ist.FIG. 2 shows a lateral view of a U-arm 2 with another embodiment of an exposure apparatus according to the invention, which contains a position-bound, large-area detector 19 with matrix elements 20.1-20.11, which can be read separately in the sense of a distance shift, and a tiltable source 22 of an optical signal. By reading out ei ¬ ner from at least one matrix element 20.1-20.11 existing subarea of the detector 19, a detector measuring surface 21 can be selected, which is displaced by a selection of a respective other subarea. Instead of the laser beam 17 of Figure 1, an optical signal in the form of a likewise consistent with good Detect ¬ bility advantageous light beam 23 is provided, the direction in existing Sonders simple manner in its direction depending on the position of the detector measuring surface 21 in swiveling 24 and is thus changeable in its radiation angle relative to the breast. This is made possible with particularly little technical effort by means of an arrangement of the source 22 of the light beam 23 on the compression unit 11 which can be tilted correspondingly by swiveling. This type of on ¬ arrangement is particularly compact and allows the mammography apparatus a particularly collision-free with an insertion portion 25 of an existing during the examination X-ray radiation, space-saving construction 10. Since the Quel ¬ le 22 of the light beam 23 together with the compression unit 11 in the direction 10 is adjustable in height and therefore always assumes the same spatial position relative to the display 12, regardless of the height setting, eliminating the need to account for the height adjustment at a tilting the source 22 ent ¬ speaking tilting the position of the detector. As a further part of the exposure machine, an electronic control device 39 is provided according to an advantageous embodiment of the invention by which the source 22 of the light beam 23 in its tilting angle according to the respective position of ¬ read, the read-out region 21 corresponding partial area is controllable.
Figur 3 zeigt in seitlicher Ansicht einen U-Arm mit einem dritten Ausführungsbeispiel eines erfindungsgemäßen Belichtungsautomaten, der gegenüber dem in Figur 1 dargestellten Belichtungsautomaten anstelle der direkten Strahlanzeige auf der Brust einen in einem Lichtstrahlbündel 26 verschiebbaren Draht 27 zur Anzeige der jeweiligen Position des Detektors 13 durch Schattenwurf 28 dieses Drahts auf die Brust aufweist. Einerseits ist der abhängig von der Position des Detektors 13 in Verschieberichtung 29 verschiebbare Schattenwurf 28 und andererseits die Lage der Brust selbst durch deren Beleuch¬ tung mit dem Lichtstrahlbündel 26 gut erkennbar. Der Aufwand zur Erzeugung des vorgenannten Lichtstrahlbündels 26 lässt sich durch Mitbenutzung eines zur Einstellung der Röntgenstrahlungsblende vorgesehenen Lichtvisiers - wie im Folgenden näher beschrieben - wesentlich reduzieren.Figure 3 shows a side view of a U-arm with a third embodiment of an exposure machine according to the invention, compared to the exposure apparatus shown in Figure 1 instead of the direct beam display on the chest a displaceable in a light beam 26 wire 27 for displaying the respective position of the detector 13 by Cast shadow 28 of this wire on the chest. On the one hand, it is dependent on the position of the detector 13 in the direction of displacement 29 slidable shadow 28 and on the other hand, the position of the breast itself by their lighting ¬ tion with the light beam 26 well recognizable. The effort for generating the aforementioned light beam 26 can be substantially reduced by the joint use of a provided for setting the X-ray aperture light visor - as described in more detail below.
Aus der in dem vorgenannten Buch „Mammadiagnostik für MTRA und Ärzte" von Prof. Dr. Heinz Otto auf Seite 23 dargestell¬ ten Abbildung 4.2 ist bekannt, zur Einengung des Einblendungsbereichs 25 der während der Untersuchung von der Rönt¬ genquelle eingestrahlten Röntgenstrahlung eine Röntgenstrahlungsblende 30.1, 30.2 vorzusehen und diesen Einblendungsbe- reich 25 als Einstellhilfe der Einengung vor der Untersuchung kenntlich zu machen, indem die Röntgenstrahlungsblende 30.1, 30.2 durch ein von einer Lichtquelle 31 ausgesendete und über einen Spiegel 32 in den Einblendungsbereich 25 umgelenkte Lichtstrahlbündel 26 als Lichtvisier verwendbar ist. Zur Durchführung der Untersuchung ist nach dem Einstellen der Röntgenstrahlungsblende 30.1, 30.2 die Lichtquelle 31 aus¬ schaltbar sowie der Spiegel 32 aus dem Einblendbereich 25 wegklappbar. Dieses an sich bereits vorhandene Lichtstrahlbündel 26 wird gemäß einer vorteilhaften Ausgestaltung der Erfindung, wie in Figur 3 gezeigt, zur Anzeige 12 der Positi¬ on des Detektors 13 mittels Schattenwurf 28 mitbenutzt.From the in the aforementioned book "breast diagnostics for technologists and physicians" by Prof. Dr. Heinz Otto on page 23 dargestell ¬ th Figure 4.2 is known for narrowing the display area 25 of the ¬ gene source irradiated X-rays during the investigation of the Rönt an X-ray aperture 30/01 , 30.2 and make this Einblendungsbe- rich 25 as adjustment aid of the constriction prior to the investigation by the X-ray aperture 30.1, 30.2 by a light emitted from a light source 31 and a mirror 32 in the Einblendungsbereich 25 deflected light beam 26 is used as a light sight. to carry out the study of the X-ray aperture 30.1, 30.2, the light source 31 from ¬ switchable and the mirror 32 from the fade-25 is folded away after the adjustment. This existing in itself light beam 26 is according to an advantageous embodiment of the invention, geze as in Figure 3 igt, for display 12 of the positi ¬ on the detector 13 by shadow 28 shared.
Figur 4 zeigt in seitlicher Ansicht einen U-Arm mit einem vierten Ausführungsbeispiel eines erfindungsgemäßen Belich- tungsautomaten, der gegenüber dem in Figur 1 dargestelltenFIG. 4 shows, in a side view, a U-arm with a fourth exemplary embodiment of an exposure apparatus according to the invention, which is opposite to that shown in FIG
Belichtungsautomaten anstelle der Laserstrahlquelle 16 einen mit dem Detektor verschiebbaren mechanischen Zeiger 33 im Sichtfeld auf die Brust 9 zur Anzeige der jeweiligen Position des Detektors 13 aufweist.Exposure machine instead of the laser beam source 16 has a movable with the detector mechanical pointer 33 in the field of view on the chest 9 to display the respective position of the detector 13.
Figur 5 zeigt in Draufsicht einen Ausschnitt des U-Arms gemäß Figur 1, wobei der Objekttisch 7, die Kompressionseinheit 11, die Brust 9 sowie die in Verschieberichtung 18 verschiebbare Anzeige 12, hier in Form einer Laserstrahllinie, dargestellt sind.FIG. 5 shows a plan view of a section of the U-arm according to FIG. 1, the object table 7, the compression unit 11, the breast 9 and the displaceable in the direction 18 display 12, here in the form of a laser beam line, are shown.
Figur 6 zeigt in Draufsicht den Ausschnitt des U-Arms gemäß Figur 5, wobei eine in Verschieberichtung 35 verschiebbare Anzeige 34 durch ein der Form einer kreissegmentförmigen Detektormessfläche entsprechende Lichtprojektion vorgesehen ist, um in besonders vorteilhafter Weise eine zur genauen An- passung der Belichtungszeit an die Beschaffenheit der Brust notwendige vollständige Überdeckung der Detektormessfläche durch die Brust anzeigbar zu machen.FIG. 6 shows a plan view of the detail of the U-arm according to FIG. 5, wherein a display 34 which is displaceable in the direction of displacement 35 is provided by a light projection corresponding to the shape of a circular segment-shaped detector measuring surface, in order to adapt the exposure time to the exact time Breast texture necessary to make complete coverage of the detector area through the breast displayable.
Die Erfindung lässt sich grundsätzlich wie folgt zusammenfas- sen: Die Erfindung betrifft einen Röntgenbelichtungsautomaten für ein Mammographiegerät mit einer in Bezug auf eine zu un¬ tersuchende Brust 9 positionierbaren Detektormessfläche 14, deren jeweilige Position zur einfachen und exakten Positionierung der Detektormessfläche 14 durch eine Anzeige 12, ins- besondere in Form eines optischen Signals, im Sichtfeld die Brust 9 anzeigbar ist. The invention can in principle be summarized as follows: The invention relates to an X-ray exposure machine for a mammography device having a tersuchende with respect to a to un ¬ breast 9 positionable detector measuring surface 14, whose respective position for easy and exact positioning of the detector measuring surface 14 by a display 12 , in particular in the form of an optical signal, in the field of vision the breast 9 can be displayed.
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20070473A FI20070473A7 (en) | 2004-12-10 | 2005-12-02 | X-ray exposure machine for mammography machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004059661.1 | 2004-12-10 | ||
| DE102004059661A DE102004059661A1 (en) | 2004-12-10 | 2004-12-10 | X-ray exposure machine for a mammography device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006061357A1 true WO2006061357A1 (en) | 2006-06-15 |
Family
ID=35695598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/056444 Ceased WO2006061357A1 (en) | 2004-12-10 | 2005-12-02 | X-ray exposure device for use in a mammography apparatus |
Country Status (4)
| Country | Link |
|---|---|
| CN (1) | CN101111190A (en) |
| DE (1) | DE102004059661A1 (en) |
| FI (1) | FI20070473A7 (en) |
| WO (1) | WO2006061357A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008090118A1 (en) * | 2007-01-23 | 2008-07-31 | Siemens Aktiengesellschaft | Apparatus and method for a medical diagnosis |
| CN100464695C (en) * | 2007-03-21 | 2009-03-04 | 北京师范大学 | Breast optical parameter measuring instrument |
| WO2009106391A1 (en) * | 2008-02-26 | 2009-09-03 | Siemens Aktiengesellschaft | Medical radiological device and radiological system |
| WO2011141763A1 (en) * | 2010-05-12 | 2011-11-17 | Trophy | Alignment apparatus for dental intraoral radiography |
| WO2020069031A1 (en) * | 2018-09-25 | 2020-04-02 | Hologic, Inc. | Light assemblies and methods for mammography and tomosynthesis imaging systems |
| EP3692921A1 (en) * | 2019-02-08 | 2020-08-12 | Fujifilm Corporation | Radiography system, medical imaging system, control method, and control program |
| US11801018B2 (en) | 2020-09-24 | 2023-10-31 | Hologic, Inc. | Light source for an imaging system and methods of the same |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008055737A1 (en) * | 2008-11-04 | 2010-05-06 | Siemens Aktiengesellschaft | Tomosynthesegerät |
| CN102090899B (en) * | 2009-12-14 | 2013-04-03 | 株式会社东芝 | X-ray CT apparatus and control method of x-ray CT apparatus |
| CN101816567A (en) * | 2010-03-31 | 2010-09-01 | 桂林电子科技大学 | Mammary X-ray photography method |
| FR2969919B1 (en) * | 2011-01-03 | 2013-01-11 | Gen Electric | METHOD FOR ASSISTING THE POSITIONING OF AN ORGAN ON A MEDIUM OF A SYSTEM FOR ACQUIRING MEDICAL IMAGES |
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| DE4330787A1 (en) * | 1993-09-10 | 1995-03-23 | Siemens Ag | Method for operating an automatic X-ray exposure device |
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- 2005-12-02 FI FI20070473A patent/FI20070473A7/en unknown
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| US5267295A (en) * | 1989-11-23 | 1993-11-30 | Planmed Oy | Methods and device related to automatic exposure in X-ray diagnostics in particular in mammography |
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Cited By (14)
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| US8009798B2 (en) | 2007-01-23 | 2011-08-30 | Siemens Aktiengesellschaft | X-ray imaging system |
| WO2008090118A1 (en) * | 2007-01-23 | 2008-07-31 | Siemens Aktiengesellschaft | Apparatus and method for a medical diagnosis |
| CN100464695C (en) * | 2007-03-21 | 2009-03-04 | 北京师范大学 | Breast optical parameter measuring instrument |
| US8496380B2 (en) | 2008-02-26 | 2013-07-30 | Siemens Aktiengesellschaft | Medical radiological device and radiological system |
| WO2009106391A1 (en) * | 2008-02-26 | 2009-09-03 | Siemens Aktiengesellschaft | Medical radiological device and radiological system |
| WO2011141763A1 (en) * | 2010-05-12 | 2011-11-17 | Trophy | Alignment apparatus for dental intraoral radiography |
| US20130051528A1 (en) * | 2010-05-12 | 2013-02-28 | Jean-Marc Inglese | Alignment apparatus for dental intraoral radiology |
| US9332951B2 (en) | 2010-05-12 | 2016-05-10 | Trophy | Alignment apparatus for dental intraoral radiology |
| WO2020069031A1 (en) * | 2018-09-25 | 2020-04-02 | Hologic, Inc. | Light assemblies and methods for mammography and tomosynthesis imaging systems |
| US12268535B2 (en) | 2018-09-25 | 2025-04-08 | Hologic, Inc. | Light assemblies and methods for mammography and tomosynthesis imaging systems |
| EP3692921A1 (en) * | 2019-02-08 | 2020-08-12 | Fujifilm Corporation | Radiography system, medical imaging system, control method, and control program |
| US11317882B2 (en) | 2019-02-08 | 2022-05-03 | Fujifilm Corporation | Radiography system, medical imaging system, control method, and control program |
| US11801018B2 (en) | 2020-09-24 | 2023-10-31 | Hologic, Inc. | Light source for an imaging system and methods of the same |
| US12121377B2 (en) | 2020-09-24 | 2024-10-22 | Hologic, Inc. | Light source for an imaging system and methods of the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101111190A (en) | 2008-01-23 |
| FI20070473L (en) | 2007-06-14 |
| FI20070473A7 (en) | 2007-06-14 |
| DE102004059661A1 (en) | 2006-06-22 |
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