Use of a metal ring-marked catheter for geometric calibration in quantitative coronary angiography.
Use of a metal ring-marked catheter for geometric calibration in quantitative coronary angiography.
复制标题
使用金属环标记导管在定量冠状动脉造影中进行几何校准。
DOI：
10.1002/ccd.1810150212
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Chesebro,JH
中科院分区：
文献类型：
--
作者：
JacobsJr,JH;Bove,AA;Smith,HC;Chesebro,JH
Quantitative coronary angiography depends on accurate measurement of catheter shaft diameter for correction of X‐ray magnification errors. We compared the use of coronary catheters with a single metal ring (R), inserted during manufacture, with measurements using the edges of the catheter shaft (S) as a calibration mark. Both ring and shaft were 2.50 mm in diameter. On unmagnified X‐ray images, the ring measured 2.49 ± .040 mm, and the shaft measured 2.39 ± .040 mm in diameter. Quantitative coronary angiography using both ring and shaft for calibration provided the same percent stenosis (R: 72 ± 12; S: 71 ± 13), but stenosis cross‐sectional area was 28% different (R: 1.44 ± .24; S: 1.84 ± .34 mm2). Use of the catheter shaft for calibration causes overestimation of actual coronary artery dimensions. To prevent this problem, absolute measurements of coronary artery dimensions should be made with metal ring‐marked catheters.
