Experimental validation of geometric and densitometric coronary measurements on the new generation cardiovascular angiography analysis system (caas ii)

JÜRgen Haase, Javier Escaned, Eline Montauban van Swijndregt, Yukio Ozaki, Ed Gronenschild, Cornelis J. Slager, Patrick W. Serruys

研究成果: Article査読

123 被引用数 (Scopus)

抄録

Computer‐assisted contour detection and videodensitometric cross sectional area assessment of coronary artery obstructions on the CAAS II system were validated in vitro and in vivo by angiographic cinefilm recording and automated measurement of stenosis phantoms (luminal diameter 0.5, 0.7, 1.0, 1.4, 1.9 mm) which were first inserted in a plexiglass model and then serially implanted in swine coronary arteries. “Obstruction diameter” (OD) and “obstruction area” (OA) values obtained from 10 in vitro and 19 in vivo images at the site of the artificial stenoses were compared with the true phantom dimensions. The in vitro assessment of OD yielded an accuracy of 0.00±0.11 mm (correlation coefficient: r = 0.98, y = 0.18 + 0.82x, standard error of estimate: SEE = 0.08), whereas the in vivo measurement of OD gave an accuracy of −0.01 ± 0.18 mm (r = 0.94, y = 0.22 + 0.82x, SEE = 0.15). The assessment of OA gave an accuracy of −0.08 ± 0.21 mm2 in vitro (r = 0.97, y = 0.08 + 0.99x, SEE = 0.22) and −0.22 ± 0.32 mm2 in vivo (r = 0.95, y = 0.21 + 1.01x, SEE = 0.33). The mean reproducibility was ±0.09 mm for geometric measurements and ±0.21 mm2 for videodensitometric assessments, respectively. Thus, due to inherent limitations of the imaging chain, the reliability of geometric coronary measurements is still far superior to videodensitometric assessments of vessel cross sectional areas. © 1993 Wiiey‐Liss, Inc.

本文言語English
ページ(範囲)104-114
ページ数11
ジャーナルCatheterization and Cardiovascular Diagnosis
30
2
DOI
出版ステータスPublished - 10-1993
外部発表はい

All Science Journal Classification (ASJC) codes

  • 循環器および心血管医学

フィンガープリント

「Experimental validation of geometric and densitometric coronary measurements on the new generation cardiovascular angiography analysis system (caas ii)」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル