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http://dx.doi.org/10.5392/JKCA.2019.19.06.471

Application of Incidence Angle on Lumbar Spine Anteroposterior General Radiography Image according to Measured Intervertebral Disc Angle  

Moon, Seul-Ji-A (전남대학교병원 영상의학과)
Kim, Gyeong-Rip (양산부산대학교병원 감마나이프센터)
Cho, Hee-Jung (부산과학기술대학교 의무행정과)
Sung, Soon-Ki (양산부산대학교병원 감마나이프센터)
Kwak, Jong-Hyeok (양산부산대학교병원 영상의학과)
Publication Information
The Journal of the Korea Contents Association / v.19, no.6, 2019 , pp. 471-480 More about this Journal
Abstract
L-spine 3~4, L-spine 4~5, and L-spine 5~Sacrum 1 intervertebral disc(IVD) angle according to gender, age, body mass index(BMI), lumbar lordosis angle(LLA) were compared and analyzed. The anteriorposterior incidence angle of L-spine 3 ~ 4, L-spine 4 ~ 5 and L-spine 5~Sacrum 1 in body mass index were 5.66, 13.23 and 29.13 degrees in the head direction and L-spine 3 4, L-spine 4 ~ 5, L-spine 5~Sacrum 1 had 6.32 degrees, 16.09 degrees and 35.36 degrees in the head direction. The distortion area ratio comparison was performed with the phantom image using the proposed incidence angle. There was a significant difference in L-spine 4~5 and L-spine 5~Sacrum 1 IVD angle relative to body mass index and LLA(p<0.05), IVD angle and LLA were positively correlated(p<0.05).As a result of evaluating the usefulness of the image by applying the incidence angles of the disc angles according to the phantom angle of deviation to the head direction as 11 degrees for L4 and 26 degrees for L5, the distortion ratio area decreased from 14.90% to 12.11% in L4, And from 15.25% to 13.72% in L5. In anteriorposterior image of the Lumbar spine applying the incidence angle according to the measured disc angle, it is possible to reduce the distortion to purpose L4, L5. And improved the quality and diagnostic information of the target site.
Keywords
Lumbar Spine Anteroposterior X-ray; Intervertebral Disc Angle; Lumbar Lordosis Angle;
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