Calculation Of Correction Angles Of 3-Dimensional Vertebral Rotations Based On Bi-Plane X-Ray Photogrammetry

Tamotsu Tamaki; Eisaku Umezaki; Masatsune Yamagata; Shun-ichi Inoue

doi:10.1117/12.944938

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24 October 1984 Calculation Of Correction Angles Of 3-Dimensional Vertebral Rotations Based On Bi-Plane X-Ray Photogrammetry

Tamotsu Tamaki; Eisaku Umezaki; Masatsune Yamagata; Shun-ichi Inoue

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Proceedings Volume 0507, Processing and Display of Three-Dimensional Data II; (1984) https://doi.org/10.1117/12.944938
Event: 28th Annual Technical Symposium, 1984, San Diego, United States

Abstract

For the therapy of diseases of spinal deformity such as scoliosis, the data of 3-dimensional and correct spinal configuration are needed. Authors developed the system of spinal configuration analysis using bi-plane X-ray photogrammetry which is strong aid for this subject. The idea of correction angle of rotation of vertebra is introduced for this system. Calculated result under this idea has the clinical meaning because the correction angle is the angle which should be corrected on the treatment such as operation or wearing the equipment. Method of 30° oblique projection which gives the apparent X-ray image and eases the measurement of the anatomically characteristic points is presented. The anatomically characteristic bony points whose images should be measured on a- or b-film are of four points. These are centers of upper and lower end plates of each vertebra the center is calculated from two points which are most distant each other on the contour of vertebral end plate ), the lower end points of root of right and left pedicles. Some clinical applications and the effectiveness of this system are presented.

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Tamotsu Tamaki, Eisaku Umezaki, Masatsune Yamagata, and Shun-ichi Inoue "Calculation Of Correction Angles Of 3-Dimensional Vertebral Rotations Based On Bi-Plane X-Ray Photogrammetry", Proc. SPIE 0507, Processing and Display of Three-Dimensional Data II, (24 October 1984); https://doi.org/10.1117/12.944938

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