[논문]Optimum Angle of Incidence for General Anteroposterior Radiographic Image According to Lordosis angle : For Obese People

Kwak, Jong Hyeok; Kim, Gyeong Rip; Cho, Hee Jung; Moon, Sung Jin; Lee, Eun Sook; Sung, Soon Ki

doi:10.5392/ijoc.2021.17.1.018

Optimum Angle of Incidence for General Anteroposterior Radiographic Image According to Lordosis angle : For Obese People 원문보기

International journal of contents, v.17 no.1, 2021년, pp.18 - 26

Kwak, Jong Hyeok (Department of Radiology, Pusan National University Yang-san Hospital) , Kim, Gyeong Rip (Gamma-knife center, Pusan National University Yang-san Hospital) , Cho, Hee Jung (Busan institute of science and technology, Depart of Medical Administration) , Moon, Sung Jin (Busan institute of science and technology, Rehabilitation exercise & health) , Lee, Eun Sook (Department of health & medicine management, Pusan National University Hospital) , Sung, Soon Ki (Gamma-knife center, Pusan National University Yang-san Hospital)

Abstract ▼ AI-Helper

The obesity leads to be the result of the weakening of anatomical structure as well as the gravity effect. And, the obesity interferes with normal sagittal balance and fails to maintain a straight posture with minimal energy. Therefore, the obesity can be an important factor in causing back pain by changing the lumbar lordosis. In this study, we will present an appropriate angle of incidence for obese people to reduce the image distortion of L4, L5 during a general anteroposterior radiography examination. To reduce image distortion according to the change of lordosis, the angle of incidence was applied 9 ° and 21 ° to L4 and L5 vertebra body when obesity and low back pain (LBP) perform the general anteroposterior radiography examination.

주제어

표/그림 (9)

그림 Figure 1. Measurement of lumbar lordosis angle and intervertebral disc angle
그림 Figure 2. Distortion area measurement using PACS program (marosis, marotech)
표 Table 1. Correlation among BMI, LLA and IDA
표 Table 2. Correlation among Obesity, LLA and IDA
표 Table 3. Comparison of IDA according to BMI
표 Table 4. Incident angle of lumbar vertebra body L4, L5 according to LLA
그림 Figure 3. L4 and L5 body AnteroPosterior radiography image applied to incident angle by using the phantom over 30° of LLA
그림 Figure 4. L4, L5 body Antero-Posterior X-ray image applied to incident angle below 30° of LLA
표 Table 5. Comparison of distortion area and distortion factor according to incident angle on L4, L5

AI 본문요약
AI-Helper

문제 정의

This study demonstrate that general anteroposterior radiography using the proposed incident angle improves image quality and the diagnostic information of the vertebral body. Especially, it is expected that our study is the first research to suggest an optimum angle of incidence for general anteroposterior radiography for obese people.

대상 데이터

We selected 170 patients who have the reading result of 'Negative' from medical specialist of radiology among the patients who underwent anteroposterior and lateral examination for lumbar vertebrae from January 1 to December 31, 2018.

데이터처리

0 (Statistical Package for the Social Science, SPSS). LLA, BMI and obesity were used as independent variables and IDA for the lumbar vertebrae 3 to 4, the lumbar vertebrae 4 to 5 and the lumbar vertebrae 5 to sacrum 1 were used as dependent variables, Independent T-test, one-way ANOVA, and Pearson correlation analysis were performed according to results of the analysis. All data were considered to be statistically significant if the p-value was less than 0.

성능/효과

We presented the optimum angle of incidence for L4 and L5 based on LLA. As a result of the incident angle, the distortion ratio area decreased from 14.83% to 12.08% at L4 and 15.35% to 13.43% at L5. The radiograph image of a patient with union surgery had improvements in distortions in parts such as the vertebral body, intervertebral disc angle, and implant.
The radiograph image of a patient with union surgery had improvements in distortions in parts such as the vertebral body, intervertebral disc angle, and implant. By reducing the distortion in the general anteroposterior image of the lumbar vertebrae, it was possible to obtain an accurate anteroposterior vertebral body and improve the image quality and diagnostic information of the desired region. Especially, for obese people, it is expected to improve the image quality if you give a large incident angle of incidence than normal people.
By reducing the distortion in the general anteroposterior image of the lumbar vertebrae, it was possible to obtain an accurate anteroposterior vertebral body and improve the image quality and diagnostic information of the desired region. Especially, for obese people, it is expected to improve the image quality if you give a large incident angle of incidence than normal people.
For 170 patients, the correlations between LLA, IDA and BMI were analyzed; LLA and BMI showed a weak positive correlation (r = 0.244, p < 0.01)
Our data showed a strong statistically significant correlation between obesity and the angle of lordosis of the lumbar vertebrae. We presented the optimum angle of incidence for L4 and L5 based on LLA.
43% at L5. The radiograph image of a patient with union surgery had improvements in distortions in parts such as the vertebral body, intervertebral disc angle, and implant. By reducing the distortion in the general anteroposterior image of the lumbar vertebrae, it was possible to obtain an accurate anteroposterior vertebral body and improve the image quality and diagnostic information of the desired region.

후속연구

This study demonstrate that general anteroposterior radiography using the proposed incident angle improves image quality and the diagnostic information of the vertebral body. Especially, it is expected that our study is the first research to suggest an optimum angle of incidence for general anteroposterior radiography for obese people.
To prevent degenerative diseases of the spine, it is important to lower the BMI. Further studies are needed to generalize our results, and we expect to provide standard values for the means of LLA and IDA in healthy normal Koreans in the standing and lateral recumbent postures through future research.
There also inadequate studies on spinal diseases, especially the mechanical, structural, and musculoskeletal disorders, caused by obesity. We would need more research on these.

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