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Cineangiograms of 138 patients who underwent percutaneous transluminal coronary angioplasty (PTCA) were analyzed with a computer-based coronary angiography analysis system. The results before and after dilatation are presented. In a first study group (120 patients), the severity of the obstructive lesions derived from the automatically detected contours was evaluated in absolute terms and in percent-diameter reduction. In a second group of patients, 18 coronary lesions were selected for their extreme severity and symmetric aspect before angioplasty as assessed from multiple views. In the second group, the densitometric percent-area stenosis was used to assess the changes in cross-sectional area after PTCA and was compared with the circular percent-area stenosis computed from the diameter measurements. Before PTCA, a good agreement exists between the densitometric percent-area stenosis and the circular percent-area stenosis. After PTCA, important discrepancies between these 2 types of measurements are observed. It is suggested that these discrepancies in results after PTCA can be accounted for by asymmetric morphologic changes in luminal cross section, which cannot be assessed accurately from diameter measurements in a single-plane view.
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
November 1993,
The American journal of cardiology,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
January 1988,
Catheterization and cardiovascular diagnosis,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
July 1987,
The American journal of cardiology,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
November 1990,
The American journal of cardiology,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
August 1986,
Taiwan yi xue hui za zhi. Journal of the Formosan Medical Association,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
September 1985,
The New England journal of medicine,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
July 1995,
American heart journal,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
July 1993,
American heart journal,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
October 1993,
Journal of the American College of Cardiology,
P W Serruys, and
J H Reiber, and
W Wijns, and
M van den Brand, and
C J Kooijman, and
H J ten Katen, and
P G Hugenholtz
January 1980,
Archivos del Instituto de Cardiologia de Mexico,
