CN101991421B - Method for measuring bending degree of vertebra by CT scanning and 3D post-processing images - Google Patents
Method for measuring bending degree of vertebra by CT scanning and 3D post-processing images Download PDFInfo
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- CN101991421B CN101991421B CN 201010524628 CN201010524628A CN101991421B CN 101991421 B CN101991421 B CN 101991421B CN 201010524628 CN201010524628 CN 201010524628 CN 201010524628 A CN201010524628 A CN 201010524628A CN 101991421 B CN101991421 B CN 101991421B
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Abstract
The invention relates to a method for measuring the bending degree of the vertebra by CT scanning and 3D post-processing images. In the method, CT scanning and 3D post-processing software carried by the CT are used for respectively measuring the included angle between a vertebral body and a parallel line of a standard vertical line on 3D images of the vertebra or on a sagittal plane, a coronal plane and a tangent cross section corresponding to the vertebra, thereby simply and accurately measuring and evaluating the bending degree of the vertebra. Compared with the traditional measuring method, the included angle between the measured vertebral body and the parallel line of the standard vertical line is directly measured on a side position image or the sagittal plane, a normal position image or the coronal plane and an axial position image or the tangent cross section, thus the method of the invention is more simple and accurate and is superior to the traditional measuring method.
Description
Technical field
The present invention relates to a kind of measuring method of spinal curvature angle, be specifically related to a kind of method with CT scan and 3D post processing image measurement spinal curvature degree.
Background technology
The patient of congenital spinal curvature is more common, the people who bends over one's desk working will be also more and more with the quickening pace of modern life the day after tomorrow, and many people do not pay attention to sitting posture, usually because wrong sitting posture causes the flexural deformation of vertebra, patient's health and image caused tremendous influence.Due to the physiological property of vertebra, measuring at present needs CT auxiliary mostly in the method for spinal curvature, reappears 3-D view or plane picture is measured by CT scan.But, exist in most of measuring methods and measure complexity, can not Measurement accuracy and the defective of estimating its degree of crook.
Summary of the invention
The object of the present invention is to provide a kind of method of CT scan and 3D post processing image measurement spinal curvature degree, the method is utilized CT scan, utilizes the CT the poster processing soft, can Measurement accuracy and the degree of estimating spinal curvature on image.
For achieving the above object, the technical solution adopted in the present invention is: the method for CT scan and 3D post processing image measurement spinal curvature degree, and its step is as follows:
The first step is carried out the CT scan of standard position to the patient, the patient lies on the back on the CT examination bed, lifts excessively on both hands, and human body center sagittal line hits exactly sagittal line with the CT examination bed and overlaps; The human body midaxillary line is parallel with examinating couch;
Second step is written into CT post processing 3D program with the thin layer image sequence;
The 3rd step, in CT post processing 3D program, select vertebra three-dimensional reconstruction pattern, if position is nonstandard, the scalable image obtains the three-dimensional side position picture of vertebra, reverse S-line of Golden and axis location image, or obtain corresponding plane sagittal plane, coronalplane, tangent cross-sectional image, select flexibility and the swing of 3-D view or plane image measurment vertebra;
In the 4th step, estimate the bending of vertebra and the angle of rotation by the anglec of rotation that the 3rd pacing measures;
Wherein, the parameter of the CT scan in the first step is: spinal column helical scanning automatic dosage sequence, 120kv, 200mas, bed thickness 1mm, interval 0.6mm.
Wherein, described vertebra side position picture or the sagittal anglec of rotation refer to the angle of the parallel lines of vertebra top mid point and bottom mid point line and standard vertical curve on side position picture or sagittal plane; The anglec of rotation of described reverse S-line of Golden or coronalplane refers to the angle of the parallel lines of vertebra top mid point and bottom mid point line and standard vertical curve on reverse S-line of Golden or coronalplane; The anglec of rotation of described axis location image or tangent transverse section refers to the angle of the parallel lines of line that vertebra leading edge mid point and ridge on axis location image or tangent transverse section are prominent and standard vertical curve.
the technique effect that adopts technique scheme to reach is: utilize CT scan and CT post processing 3D program at side position picture or the sagittal plane of vertebra, reverse S-line of Golden or coronalplane, measure respectively the angle with the parallel lines of standard vertical curve on axis location image or tangent transverse section, can measure simply exactly and estimate the degree of crook of vertebra, compare traditional measuring method, this patent is directly at side position picture or sagittal plane, reverse S-line of Golden or coronalplane, measure the angle of the parallel lines of tested vertebral body axis and standard vertical curve on axis location image or tangent transverse section, more simply more accurate, be better than traditional measuring method.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the instrumentation plan of reverse S-line of Golden or coronalplane in the method for CT scan of the present invention and 3D post processing image measurement spinal curvature degree;
Fig. 2 is side position picture or sagittal instrumentation plan in the method for CT scan of the present invention and 3D post processing image measurement spinal curvature degree;
Fig. 3 is the instrumentation plan of axis location image or tangent transverse section in the method for CT scan of the present invention and 3D post processing image measurement spinal curvature degree.
The specific embodiment
The position when patient does CT scan: the patient lies on the back on the CT examination bed, lifts excessively on both hands, and human body center sagittal line hits exactly sagittal line with examinating couch and overlaps, and the human body midaxillary line is parallel with examinating couch, and both sides and cephalopodium end support with cotton pad, keep the position posture.
CT scan parameter: spinal column helical scanning automatic dosage sequence, 120kv, 200mas, bed thickness 1mm, interval 0.6mm.
Scanning post processing: the thin layer image sequence is written into CT post processing 3D program.
The curved convex direction of spinal column: vertebral body is curved protruding and palintrope is protruding forward to the left and right.Normal person's thoracic vertebra is slightly protruding to palintrope, and lumbar vertebra is slightly to antecurvature protruding.Curved protruding the changing of physiology when abnormal.
Here need to prove: human body left and right line is X-axis; The front and back line is Y-axis; The cephalopodium line is Z axis.The XY plane is the transverse section; On axle position or transverse section picture, the parallel lines of measured vertebral body axis and standard vertical curve form the anglec of rotation; The XZ plane is coronalplane, and on normotopia or coronalplane picture, the parallel lines of measured vertebral body axis and standard vertical curve form left and right corner; The YZ plane is sagittal plane, and on side position or sagittal plane picture, the parallel lines of measured vertebral body axis and standard vertical curve form front-and-back angle.
The standard vertical curve is exactly the quadrature canonical reference line that software carries, and each of vertical line and horizontal line is arranged, and is orthogonal, is positioned at screen and hits exactly.
Reverse S-line of Golden, side position picture and axis location image are three-dimensional images, sagittal plane, coronalplane and tangent transverse section are plane pictures.
The bending of vertebral body is divided into following several situation:
1, the curved protruding measurement in front and back:
Rotation around X-axis occurs in measured vertebral body, the vertebral body center is rotating shaft, and rotating shaft two ends are shifted forwards, backwards, measures on the picture of side position, on vertebral body under mid point and vertebral body the angle of the parallel lines of the extended line of the line of mid point and standard vertical curve be the anglec of rotation, be protruding angle before and after vertebral body.Abnormal curvedly should deduct a normal physiological bending degree when protruding.Curved convex direction can with antecurvature protruding, upper palintrope is protruding, lower antecurvature protruding, lower palintrope is protruding represents.
2, the curved protruding measurement in left and right:
Rotation around Y-axis occurs in measured vertebral body, the vertebral body center is rotating shaft, and rotating shaft two ends are shifted to the left and right, measure on reverse S-line of Golden, on vertebral body under mid point and vertebral body the angle of the parallel lines of the extended line of the line of mid point and standard vertical curve be the anglec of rotation, be the protruding angle in vertebral body left and right.Normal spinal column does not have the left and right protruding; Curved convex direction can be with curved protruding, the bottom right of upper left curved protruding, upper right curved protruding, bottom left curved protruding expression.
3, vertebral body is around the measurement of the Z axis anglec of rotation:
Rotation around Z axis occurs in measured vertebral body, on axle position or tangent cross-section position picture, take the angle of the parallel lines of spinal column leading edge mid point and the prominent line of ridge and standard vertical curve as the anglec of rotation, is vertebral body around the Z axis anglec of rotation.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; without departing from the inventive concept of the premise; can also make some distortion and improvement; these also should be considered as protection scope of the present invention, and these can not affect effect of the invention process and practical applicability.
Claims (2)
1.CT the method for scanning and 3D post processing image measurement spinal curvature degree, its step is as follows:
The first step is carried out the CT scan of standard position to the patient, the patient lies on the back on the CT examination bed, lifts excessively on both hands, and human body center sagittal line hits exactly sagittal line with the CT examination bed and overlaps, and the human body midaxillary line is parallel with examinating couch;
Second step, the thin layer image sequence that the first step is obtained is written into CT post processing 3D program;
The 3rd step, in CT post processing 3D program, select vertebra three-dimensional reconstruction pattern, if position is nonstandard, the scalable image obtains three-dimensional side position picture, reverse S-line of Golden and the axis location image of vertebra; Or obtain corresponding plane sagittal plane, coronalplane, tangent cross-sectional image, select the anglec of rotation of 3-D view or plane image measurment vertebra;
In the 4th step, estimate the bending of vertebra and the degree of rotation by the anglec of rotation that the 3rd pacing measures;
The anglec of rotation of the three-dimensional side position picture of described vertebra or sagittal view picture refers to the angle of the parallel lines of vertebra top mid point and bottom mid point line and standard vertical curve on side position picture or sagittal plane; The anglec of rotation of the three-dimensional reverse S-line of Golden of described vertebra or coronal image refers to the angle of the parallel lines of vertebra top mid point and bottom mid point line and standard vertical curve on reverse S-line of Golden or coronalplane; The anglec of rotation of the three-dimensional axis location image of described vertebra or tangent cross-sectional image refers to the angle of the parallel lines of line that vertebra leading edge mid point and ridge on axis location image or tangent transverse section are prominent and standard vertical curve.
2. the method for CT scan as claimed in claim 1 and 3D post processing image measurement spinal curvature degree, is characterized in that, the parameter of the CT scan in the described first step is: spinal column helical scanning automatic dosage sequence, 120kv, 200mas, bed thickness 1mm, interval 0.6mm.
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| CN 201010524628 CN101991421B (en) | 2010-10-29 | 2010-10-29 | Method for measuring bending degree of vertebra by CT scanning and 3D post-processing images |
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| CN 201010524628 CN101991421B (en) | 2010-10-29 | 2010-10-29 | Method for measuring bending degree of vertebra by CT scanning and 3D post-processing images |
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| CN109223032B (en) * | 2017-07-11 | 2022-02-08 | 中慧医学成像有限公司 | Method for detecting spinal deformation through three-dimensional ultrasonic imaging |
| CN108814611B (en) * | 2018-05-02 | 2020-10-20 | 航天中心医院 | Method and device for measuring rotation angle of vertebral body |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6725481B1 (en) * | 2002-11-15 | 2004-04-27 | Mabel E. Marshall | Body positioner |
| CN1969756A (en) * | 2005-09-07 | 2007-05-30 | 美国西门子医疗解决公司 | Automatic detection of spinal curvature in spinal image and calculation method and device for specified angle |
| CN201091581Y (en) * | 2007-11-12 | 2008-07-30 | 殷海东 | Multifunctional backbone rotation measuring apparatus |
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| US7366278B2 (en) * | 2004-06-30 | 2008-04-29 | Accuray, Inc. | DRR generation using a non-linear attenuation model |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6725481B1 (en) * | 2002-11-15 | 2004-04-27 | Mabel E. Marshall | Body positioner |
| CN1969756A (en) * | 2005-09-07 | 2007-05-30 | 美国西门子医疗解决公司 | Automatic detection of spinal curvature in spinal image and calculation method and device for specified angle |
| CN201091581Y (en) * | 2007-11-12 | 2008-07-30 | 殷海东 | Multifunctional backbone rotation measuring apparatus |
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