CN114903518A - An intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound - Google Patents

Abstract

The invention discloses an intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound, which comprises the following steps: s1, acquiring three-dimensional ultrasonic image information of the spine by using a three-dimensional ultrasonic system to form a three-dimensional spine image; s2, inputting the three-dimensional spine image obtained in the step S1 into a computer system, and displaying, processing and analyzing image information through the computer system; s3, the computer system identifies and extracts all spinous processes in the three-dimensional spine image, generates corresponding mark points, and then connects all the mark points to form spinous process connection lines, wherein each spinous process connection line is composed of an upper straight line segment, a circular arc line segment and a lower straight line segment, a tangent line L1 of the circular arc line segment is made at the transition point of the upper straight line segment and the circular arc line segment, a tangent line L2 of the circular arc line segment is made at the transition point of the lower straight line segment and the circular arc line segment, and an included angle alpha formed by the tangent line L1 and the tangent line L2 is a Cobb angle.

Description

An intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound

technical field

The invention belongs to the technical field of scoliosis diagnosis and screening, and in particular relates to an intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound.

Background technique

Adolescent idiopathic scoliosis (AIS) is a disabling and fatal deformity, with an incidence of 2% to 4% reported in the literature. Abnormal three-dimensional structure of the spine with scoliosis Cobb angle ≥10° on plain radiographs. According to the data of the Chinese Preventive Medicine Association, the number of scoliosis cases in primary and secondary school students in my country has exceeded 5 million, and the number is increasing at a rate of 300,000 per year. Therefore, timely screening, accurate assessment and effective monitoring of adolescent idiopathic scoliosis patients can help to identify the disease and take appropriate treatment measures to prevent the disease from worsening, thereby reducing the risk of surgical intervention.

At present, X-ray is the most commonly used imaging modality for diagnosing scoliosis (scoliosis) and tracking its development status. However, X-ray imaging has radiation damage, and two-dimensional X-ray images cannot fully reflect the three-dimensional deformity characteristics. Scoliosis Cobb angle has a very important impact on the diagnosis and subsequent treatment of scoliosis. At present, for the measurement of Cobb angle, the X-ray image is usually obtained, and the upper and lower levels of scoliosis are manually established by imaging experts. After the end of the vertebra, use a protractor to measure the angle between the two ends, but this method exposes the patient to X-ray radiation, which will cause different degrees of damage to the patient, and scoliosis patients need to be treated in the follow-up process. Multiple X-rays are taken, so this method can cause greater harm to teenage patients.

SUMMARY OF THE INVENTION

In order to solve the problems existing in the prior art, the purpose of the present invention is to provide an intelligent method for measuring the Cobb angle of scoliosis based on three-dimensional ultrasound. The method for measuring the Cobb angle of the present invention collects three-dimensional information of a patient's spine by using three-dimensional ultrasound. , and the two intersecting lines of the Cobb angle are automatically marked after analysis by the computer, and then the Cobb angle is measured.

In order to realize the above-mentioned purpose of the invention, the present invention adopts the following technical scheme:

An intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound, comprising the following steps:

S1. Use a three-dimensional ultrasound system to collect three-dimensional ultrasound image information of the spine to form a three-dimensional spine image;

S2, the three-dimensional spine image obtained in step S1 is input into the computer system, and the image information is displayed, processed and analyzed by the computer system;

S3. The computer system identifies and extracts all the spinous processes in the three-dimensional spine image, generates corresponding marked points, and then connects all the marked points to form a spinous process connection line. The line segment and the lower straight line segment are formed. At the transition point of the upper straight line segment and the circular arc segment, the tangent L1 of the circular arc segment is made, and the tangent L2, tangent L1 and tangent of the circular arc segment are made at the transition point of the lower straight line segment and the circular arc segment. The included angle α formed by L2 is the Cobb angle.

Further, in step S3, if the connecting line of the spinous process consists of an upper straight line segment, two continuous arc line segments and a lower straight line segment, the Cobb angle needs to be measured separately for the two arc line segments, that is: The arc segment is set as the first arc segment and the second arc segment respectively, and the tangent L1 of the arc segment is made at the transition point between the upper straight line segment and the first arc segment, and the first arc segment and the second arc segment are set as the tangent L1 of the arc segment. The transition point of the arc segment is the tangent L2 of the first arc segment, and the angle α formed by the tangent L1 and the tangent L2 is the Cobb angle of the first arc segment, at the transition between the second arc segment and the lower straight segment The tangent L3 of the second arc segment is made at the point, and the angle α formed by the tangent L2 and the tangent L3 is the Cobb angle of the second arc segment.

Further, the three-dimensional ultrasound system is a Doppler ultrasound diagnostic apparatus.

Further, the computer system is configured with a storage module, a display module, an output report module and a processor, the storage module is used to store three-dimensional spine image information and Cobb angle data information, and the processor is used to analyze and process the three-dimensional ultrasound image information, and through The display module displays, and the output report module is used to output the Cobb angle data information processed by the processor in the form of a report.

Owing to adopting the above-mentioned technical scheme, the present invention has the following beneficial effects:

1. The Cobb angle measurement method of the present invention collects the three-dimensional information of the patient's spine by using a three-dimensional ultrasound system, and only needs to use an ultrasound probe to scan the back of the patient to realize the acquisition of the spine information, which has the advantages of high efficiency and safety;

2. The present invention identifies and extracts the spinous processes on the three-dimensional images of the spine and generates a spinous process connection line. The two ends of the curved part of the spinous process connection line respectively draw tangent lines, and the angle between the tangent lines is the Cobb angle. The Cobb angle measured by the invented measurement method is extremely accurate and has strong applicability. As long as there is a three-dimensional ultrasound image of the spine, the Cobb angle can be measured by a computer system, and then the existence of spinal deformity can be judged and its severity can be evaluated. Risk reports and medical advice.

Description of drawings

Fig. 1 is a schematic diagram of measuring the Cobb angle of a single bend on the connection line of the spinous process on the back of the human body;

Figure 2 is a schematic diagram of the measurement of the Cobb angle of the double bends on the connection line of the spinous processes on the back of the human body;

In the figure: A: upper straight line segment; B: lower straight line segment; C: circular arc segment; C1: first circular arc segment; C2: second circular arc segment; D, U, S: transition point; L1, L2: Tangent line; L: line connecting the spinous processes; α, α1, α2: Cobb angle.

Detailed ways

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

An intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound, comprising the following steps:

S1. Use a three-dimensional ultrasound system to collect three-dimensional ultrasound image information of the spine to form a three-dimensional spine image;

S2, the three-dimensional spine image obtained in step S1 is input into the computer system, and the image information is displayed, processed and analyzed by the computer system;

S3. The computer system identifies and extracts all the spinous processes in the three-dimensional spine image, generates corresponding marked points, and then connects all the marked points to form a spinous process connection line L, as shown in Figure 1, the spinous process connection line L consists of an upper straight line segment A, a circular arc line segment C and a lower straight line segment B. The tangent L1 of the circular arc segment is made at the transition point U of the upper straight line segment A and the circular arc line segment C, and the lower straight line segment B and the circular arc line segment C are formed. The tangent L2 of the arc segment is made at the transition point D of , and the angle α formed by the tangent L1 and the tangent L2 is the Cobb angle.

In step S3, if the spinous process connecting line L is composed of an upper straight line segment A, two continuous arc line segments and a lower straight line segment B, it is necessary to measure the Cobb angle of the two arc line segments respectively, that is: The arc segment is set as the first arc segment C1 and the second arc segment C2 respectively, and the tangent L1 of the arc segment is made at the transition point U between the upper straight line segment A and the first arc segment C1, and the first arc segment is At the transition point D of the arc segment C1 and the second arc segment C2, the tangent L2 of the first arc segment C1 is made, and the angle α1 formed by the tangent L1 and the tangent L2 is the Cobb angle of the first arc segment C1. The tangent L3 of the second arc segment C2 is made at the transition point S between the two arc line segment C2 and the lower straight line segment B, and the angle α2 formed by the tangent line L2 and the tangent line L3 is the Cobb angle of the second arc segment.

In the present invention, the three-dimensional ultrasound system is a Doppler ultrasound diagnostic instrument.

The computer system is configured with a storage module, a display module, an output report module and a processor, the storage module is used to store three-dimensional spine image information and Cobb angle data information, and the processor is used to analyze and process the three-dimensional ultrasound image information, and through the display module. Display, the output report module is used to output the Cobb angle data information processed by the processor in the form of a report.

In step S3 of the present invention, the connection line of the spinous process of a normal person is a straight line when viewed from the back of the human body, but the spinous process of a patient with scoliosis due to scoliosis deformity, the vertebral body shifts or rotates, resulting in the position of the spinous process Changed, at this time, when viewed from the back of the human body, the line connecting the spinous processes will form a bend (called "single curve"), that is, a single lumbar or single thoracic curve, or two curves (called "single curve") are formed on the line connecting the spinous processes. "Double curvature"), that is, the lumbar and thoracic curvature, and even more than two curvatures will be formed on the connection of the spinous process, and the curved part is the location of the Cobb angle of scoliosis to be measured.

Taking a single curve (i.e. a single lumbar or single thoracic curve) as an example, measure the Cobb angle of scoliosis:

As shown in Figure 1, the connection line of the spinous process is composed of an upper straight line segment, a circular arc line segment and a lower straight line segment. The transition point of the line segment is the tangent L2 of the arc segment, and the angle α formed by the tangent L1 and the tangent L2 is the Cobb angle.

Taking double curves (i.e. thoracic and lumbar) as an example, measure the Cobb angle of scoliosis as follows:

Since it is a double curvature of the thoracic and lumbar curves, there are two arc segments on the connection between the spinous processes. The upper arc segment is the thoracic curve, and the lower arc segment is the lumbar curve. Both curves need to be measured on the side of the spine. The location of the curved Cobb angle.

As shown in Figure 2, the connecting line of the spinous process consists of an upper straight segment, two continuous arc segments and a lower straight segment, so the Cobb angle needs to be measured separately for the two arc segments, that is: The line segments are set as the first circular arc line segment and the second circular arc line segment respectively, and the tangent L1 of the circular arc line segment is made at the transition point between the upper straight line segment and the first circular arc line segment, and the first circular arc line segment and the second circular arc line segment. The tangent L2 of the first circular arc segment is made at the transition point of The angle α formed by the tangent L3 of the second circular arc segment, the tangent L2 and the tangent L3 is the Cobb angle of the second circular arc segment.

In addition, it should be noted that if there are more than two bends on the connecting line of the spinous process, the measurement method of the Cobb angle is the same as the measurement method of the above-mentioned double bends. The Cobb angle can be obtained.

Claims (4)

1. An intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound is characterized by comprising the following steps:

s1, acquiring three-dimensional ultrasonic image information of the spine by using a three-dimensional ultrasonic system to form a three-dimensional spine image;

s2, inputting the three-dimensional spine image obtained in the step S1 into a computer system, and displaying, processing and analyzing the image information through the computer system;

s3, the computer system identifies and extracts all spinous processes in the three-dimensional spine image, generates corresponding mark points, and then connects all the mark points to form spinous process connection lines, wherein each spinous process connection line is composed of an upper straight line segment, a circular arc line segment and a lower straight line segment, a tangent line L1 of the circular arc line segment is made at the transition point of the upper straight line segment and the circular arc line segment, a tangent line L2 of the circular arc line segment is made at the transition point of the lower straight line segment and the circular arc line segment, and an included angle alpha formed by the tangent line L1 and the tangent line L2 is a Cobb angle.

2. The intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound as claimed in claim 1, wherein in step S3, if the spinous process connection line is composed of an upper straight line segment, two continuous arc line segments and a lower straight line segment, the Cobb angle needs to be measured for the two arc line segments respectively, that is: the upper and lower circular arc line sections are respectively set as a first circular arc line section and a second circular arc line section, a tangent line L1 of the circular arc line section is made at the transition point of the upper straight line section and the first circular arc line section, a tangent line L2 of the first circular arc line section is made at the transition point of the first circular arc line section and the second circular arc line section, an included angle alpha formed by the tangent line L1 and the tangent line L2 is a Cobb angle of the first circular arc section, a tangent line L3 of the second circular arc line section is made at the transition point of the second circular arc line section and the lower straight line section, and an included angle alpha formed by the tangent line L2 and the tangent line L3 is a Cobb angle of the second circular arc section.

3. The three-dimensional ultrasound based intelligent scoliosis Cobb angle measurement method according to claim 1, wherein the three-dimensional ultrasound system is a doppler ultrasound diagnostic apparatus.

4. The intelligent scoliosis Cobb angle measurement method based on three-dimensional ultrasound as claimed in claim 1, wherein the computer system is configured with a storage module, a display module, an output report module and a processor, the storage module is used for storing three-dimensional spine image information and Cobb angle data information, the processor is used for analyzing and processing the three-dimensional ultrasound image information and displaying the three-dimensional spine image information through the display module, and the output report module is used for outputting the Cobb angle data information processed by the processor in a report form.

Images