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논문 기본 정보

자료유형
학술저널
저자정보
양혜련 (가톨릭대학 의학부 방사선과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제27권 제2호
발행연도
1991.1
수록면
236 - 239 (4page)

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Plain PA chest X-ray is essential in the initial diagnosis of cardiovascular and lung diseases. Interpretation of changes in the pulmonary vasculature has been largely dependent on subjective observations of chest roentgenograms in daily practice. Simon proposes an objective quantitative approach for the interpretation of pulmonary vascular markings on chest X-rays, but this method fails to reflect real vascular distribution of the lower lung, since counting was done on the lateral field rather than of the entire area due to incomplete visualization of the vascular markings behind the heart on an orthovoltage PA chest. We propose a modified method of counting the pulmonary vessels that reflects more accurately the real condition by using high-penetration X-rays. The material I our study consisted of 200 normal adult chest films(100 of men and 100 of women, aged 20-60 years). We counted the number of vessels in the lung fields using Simon's and our modified. There were 6 to 9 vessels counted in the upper zone by both methods. However, in the lower zone there were 7 to 10 vessele according to Simon's method and 10 to 13 according to our method. Both methods showed more vessels in the lower zone than in the upper zone. The number of vessels was greater in the lower zone than in the upper in 98.5% by our method in contrast to 57% by simon's method. The number of vessels was greater in the left lung than in the right(p<0.05). Statistically there were no significant differences between the number of vessels according to sex, age, and weight, but a significant difference was noted according to height. Considering the erect position of the plain PA chest roentgenogram having normal physiologic caudalization of vascular distribution, we believe our modified method is more appropriate than Simon's

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