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

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)104-114
Number of pages11
JournalCatheterization and Cardiovascular Diagnosis
Volume30
Issue number2
DOIs
Publication statusPublished - 01-01-1993
Externally publishedYes

Fingerprint

Angiography
Coronary Vessels
Pathologic Constriction
Polymethyl Methacrylate
Swine
Congenital Aural Atresia
In Vitro Techniques

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

Cite this

Haase, JÜRgen ; Escaned, Javier ; van Swijndregt, Eline Montauban ; Ozaki, Yukio ; Gronenschild, Ed ; Slager, Cornelis J. ; Serruys, Patrick W. / Experimental validation of geometric and densitometric coronary measurements on the new generation cardiovascular angiography analysis system (caas ii). In: Catheterization and Cardiovascular Diagnosis. 1993 ; Vol. 30, No. 2. pp. 104-114.
@article{36f1b247b4a345a3b5a3ca92c0b1be99,
title = "Experimental validation of geometric and densitometric coronary measurements on the new generation cardiovascular angiography analysis system (caas ii)",
abstract = "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. {\circledC} 1993 Wiiey‐Liss, Inc.",
author = "J{\"U}Rgen Haase and Javier Escaned and {van Swijndregt}, {Eline Montauban} and Yukio Ozaki and Ed Gronenschild and Slager, {Cornelis J.} and Serruys, {Patrick W.}",
year = "1993",
month = "1",
day = "1",
doi = "10.1002/ccd.1810300205",
language = "English",
volume = "30",
pages = "104--114",
journal = "Catheterization and Cardiovascular Interventions",
issn = "1522-1946",
publisher = "Wiley-Liss Inc.",
number = "2",

}

Experimental validation of geometric and densitometric coronary measurements on the new generation cardiovascular angiography analysis system (caas ii). / Haase, JÜRgen; Escaned, Javier; van Swijndregt, Eline Montauban; Ozaki, Yukio; Gronenschild, Ed; Slager, Cornelis J.; Serruys, Patrick W.

In: Catheterization and Cardiovascular Diagnosis, Vol. 30, No. 2, 01.01.1993, p. 104-114.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Experimental validation of geometric and densitometric coronary measurements on the new generation cardiovascular angiography analysis system (caas ii)

AU - Haase, JÜRgen

AU - Escaned, Javier

AU - van Swijndregt, Eline Montauban

AU - Ozaki, Yukio

AU - Gronenschild, Ed

AU - Slager, Cornelis J.

AU - Serruys, Patrick W.

PY - 1993/1/1

Y1 - 1993/1/1

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0027383276&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0027383276&partnerID=8YFLogxK

U2 - 10.1002/ccd.1810300205

DO - 10.1002/ccd.1810300205

M3 - Article

C2 - 8221861

AN - SCOPUS:0027383276

VL - 30

SP - 104

EP - 114

JO - Catheterization and Cardiovascular Interventions

JF - Catheterization and Cardiovascular Interventions

SN - 1522-1946

IS - 2

ER -