Cobey 검사법과 Modified Cobey 검사법에 대한 방사선학적 연구

• 영문명: Radiographic Study of Cobey Method and Modified Cobey Method
• 발행기관: 대한방사선과학회(구 대한방사선기술학회)
• 저자명: 고유림(Yu-Rim Go) 주영철(Young-Cheol Joo) 이승근(Seung-Keun Lee)
• 간행물 정보: 『방사선기술과학』방사선기술과학 제42권 제3호, 167~173쪽, 전체 7쪽
• 주제분류: 의약학 > 방사선과학
• 파일형태: PDF
• 발행일자: 2019.06.30

영문 초록

The Cobey method and the modified Cobey method are most commonly used in clinical practice. Therefore, the purpose of this study was to investigate the radiological differences between Cobey and modified Cobey and provide radiographic information about changes of hindfoot image with X-ray entrance center and tube angle change in modified Cobey. This study was performed on foot and ankle phantom. First, for image comparison of Cobey and modified Cobey, the images obtained by applying the same X-ray entrance center to the ankle joint were compared and analyzed. Second, in the modified Cobey, the X-ray entrance center is set as ankle joint and lateral malleolus. The X-ray tube angle was varied from 10° to 40° at 5° intervals for each X-ray entrance center. The images obtained by varying the X-ray tube angle from 10° to 40° at intervals of 5° for each X-ray entrance center were compared and analyzed. The irradiation conditions were the same with 110 kVp, 200 mA, 10 ㎳, and 110 ㎝ of source - image receptor distance (SID). Image evaluation was performed by two radiologists. Measurements were made on the lateral point, middle point, and calcaneus width based on a hypothetical line parallel to the calcaneal tuberosity. Data were analyzed by using descriptive statistics as the mean of the distance to each measurement location. The modified Cobey was longer than the Cobey by an average of 3 to 4 mm lateral and medial points, and the calcaneus width was similar (ICC = 0.939). In modified Cobey method, when the X-ray entrance center is ankle joint, the lateral point is about 3 ㎜ and the medial point is about 4.3㎜ longer than lateral malleolus. Also, when the X-ray tube angle is more than 20°, the degree of distortion is large. The ICCs for the lateral, medial point, and calcaneus width were 0.998, 0.961, and 0.997, respectively, as the X-ray entrance center and tube angle were changed. There was no significant difference between Modified Cobey and Cobey. Modified Cobey showed no need to compensate the 20° detector angle of the Cobey. In addition, we suggest that tube angle should be limited within 20° when modified Cobey is performed.

목차

Ⅰ. 서 론

Ⅱ. 대상 및 방법

Ⅲ. 결 과

Ⅳ. 고 찰

Ⅴ. 결 론

키워드

Hindfoot Hindfoot alignment Cobey Modified Cobey