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Scoliosis X-ray image-assisted diagnostic system and method thereof

A vertebral body and peak value technology, which is applied in the field of computer biomedical engineering to achieve the effects of high measurement accuracy, manpower saving, and simple measurement process.

Inactive Publication Date: 2009-10-21
张俊华 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Through literature search, do not find the relevant public report of the computer aided measurement Cobb angle identical with the technical scheme of the present invention

Method used

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  • Scoliosis X-ray image-assisted diagnostic system and method thereof
  • Scoliosis X-ray image-assisted diagnostic system and method thereof
  • Scoliosis X-ray image-assisted diagnostic system and method thereof

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Embodiment Construction

[0018] The present invention selects the step of the peak point in the Hough space according to the geometry shape priori of vertebral body as follows:

[0019] The first step will satisfy |θ i -θ j |1 (T 1 =10 is the threshold) for peak matching. Let θ denote the average θ value of a pair of peaks, ie θ=|θ i +θ j | / 2.

[0020] In the second step, select the formula that satisfies -45i -ρ j |45 or θi -ρ j |Hn and θ Vn denote the average θ values ​​of the nth pair of candidate horizontal peak pairs and vertical peak pairs, respectively.

[0021] The third step will satisfy ||θ Hn -θ Vm |-90|2 (T 2 = 10 as the threshold) for pairing of candidate horizontal and vertical peak pairs. The average C values ​​are compared, and the paired peak pair with the largest average C value is selected, and its horizontal peak pair will correspond to the horizontal edge of the vertebral body (ie, the vertebral body endplate). Theta of the peak pair H The value is the inclination an...

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Abstract

The invention relates to a scoliosis X-ray image assisted-diagnostic system and a method thereof. The invention automatically measures the Cobb angle of a scoliosis X-ray image by an intelligent image processing technique so as to reduce manual measurement errors, and assists doctors to accurately evaluate scoliosis and predict the deformed development trend in time, so that the doctors can work out a reasonable treatment proposal or an orthomorphia plan. The method comprises the following steps: pairing peak values meeting the formula that (thetai-thetaj) is less than T1, and setting theta to represent the average theta value of a pair of peak values, namely theta (thetai+thetaj) / 2; respectively selecting a candidate horizontal peak value pair and a candidate vertical peak value pair according to the algorithm requirement, pairing candidate horizontal peak value pairs and candidate vertical peak value pairs meeting the formula [(thetaHn-thetaVm)-90] is less than T2, comparing the average C value, and selecting a paired peak value pair with the maximum average C value, wherein the horizontal peak value pair corresponds to the horizontal edge of a vertebral body, and the thetaH value of the peak value pair is the inclination angle of the vertebral body; and adding the inclination angle of two end vertebras to obtain the Cobb angle. The invention has the advantages of simple measurement process, high measurement accuracy and labor conservation.

Description

Technical field: [0001] The invention relates to a scoliosis X-ray image auxiliary diagnosis system and a method thereof, which belong to the application field of computer biomedical engineering. Background technique: [0002] Scoliosis is a spinal deformity in which one or several segments of the patient's spine curve laterally away from the midline of the body in the coronal plane, usually accompanied by rotation of the vertebrae and increased kyphosis or protrusion in the sagittal plane or reduce. Scoliosis will lead to a reduction in the volume of the chest cavity, abdominal cavity, and pelvic cavity, which will affect the life of the patient, and the deformed appearance will even cause the patient's psychological disorders. If left untreated, scoliosis may develop further, affecting heart and lung function, and even compressing spinal nerves, leading to paraplegia. The prevalence of scoliosis is about 1%. Among them, 80% of the causes of scoliosis are still unknown, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B6/00G01B11/26G06T7/00
Inventor 张俊华吴俊黄敏
Owner 张俊华
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