The Findings on Cardiothoracic Ratio in Simple Chest Radiography

Simple chest radiography에서의 심흉비(cardiothoracic ratio) 소견

The purpose of this study is to measure cardiothoracic ratio and to report the opinions on it, targeting 500 persons who were conducted simple chest radiography, in terms of clinical symptom, by visiting a medical examination center for S university hospital. As to the general characteristic of 500 research targets, it comprised 263 persons (52%) for males and 237 persons (48%), and the average age is 49.4. Out of 500 persons, it showed 125 persons (25%) in their thirties, 125 persons (25%) in their forties, 125 persons (25%) in their fifties, and 125 persons (25%) in their sixties. 1. In terms of the wholly 500 targets, the average value of cardiothoracic ratio was 0.48, and the average cardiothoracic ratio showed 0.45 in their thirties, 0.46 in their forties, 0.50 in their fifties, and 0.53 in their sixties. 2. The minimum value of cardiothoracic ratio was 0.33, and its maximum value was 0.70, and it showed 319 persons (63.8%) as to a case lower than 0.5, which is a normal value, and 181 persons (36.2%) as to a case more than 0.5, which is a normal value. 3. Among 181 persons who showed cardiothoracic ratio higher than normality, it showed 17 persons (9.4%) in their thirties, 22 persons (12%) in their forties, 54 persons (30%) in their fifties, and 88 persons (49%) in their sixties. 4. The average for the internal diameter (ID) of thorax was 141.8 mm, 229.6 mm at the minimum, and 353.5 mm at the maximum. 5. The average for the maximum transverse diameter of right side of the heart (MRD) was 48.0 mm, 4.95 mm at the minimum, and 84.5 mm at the maximum. The average for the maximum transverse diameter of left side of the heart (MLD) was 93.5 mm, 56.7 mm at the minimum, and 138.5 mm at the maximum. 6. The average for TD (MRD+MLD) of the heart was 292.6 mm, 96.6 mm at the minimum, and 199.2 mm at the maximum. 7. The average of cardiothoracic ratio (MRD+MLD/ID) was 0.48, 0.33 at the minimum, and 0.70 at the maximum.

본 연구는 임상적으로 증상이 없는 단순흉부방사선사진에서 심흉비를 측정하였고 남자 263명(52%), 여자 237명(48%) 등 500명을 대상으로 하였다. 500명 전체에 대한 심흉비의 평균은 0.48이었으며 일반적인 정상 심흉비 0.50보다 낮은 경우가 319명(63.8%), 정상치 0.50보다 높은 경우가 181명(36.2%)으로 나타났다. 정상 심흉비 0.50보다 높은 심흉비를 보인 181명의 연령대별 분석에서 30대는 17명으로 9.4%를 차지하고 있으며 30대 대상자 125명 기준으로는 13.7%, 전체 대상자 500명 기준으로는 3.4%가 정상치보다 높게 나타났다. 40대는 22명으로 12%를 차지하고 있으며 40대 대상자 125명 기준으로는 17.7%, 전체 대상자 500명 기준으로는 4.4%가 정상치보다 높게 나타났다. 50대는 54명으로 30%를 차지하고 있으며 50대 대상자 125명 기준으로는 43%, 전체 대상자 500명 기준으로는 10.8%가 정상치보다 높게 나타났다. 60대는 88명으로 49%를 차지하고 있으며 60대 대상자 125명 기준으로는 69%, 전체 대상자 500명 기준으로는 17.6%가 정상치보다 높게 나타났다.