&lt;title&gt;Quantitation Of Coronary Artery Dimensions Using Digital Image Processing&lt;/title&gt;

Alderman, Edwin L.; Berte, Larry E.; Harrison, Donald C.; Sanders, William J.

doi:10.1117/12.933058

Cited by 45 publications

(10 citation statements)

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“…This was caused by the sources of variation in the data acquisition procedure described above. Alderman et al 25 found an increase in variability in absolute sizes with a medium-term study compared with repeated analysis alone by a factor of 3; we found an increase by a factor of 1.5 to 2.2. In their study identical calibration factors, computed from the spacial positions of the image intensifier and x-ray source with respect to the patient,were used for the initial and repeat angiographic studies.…”

Section: Discussionsupporting

confidence: 45%

“…The various systems used to date vary to a great extent, from manual procedures that implement a vernier caliper or comparable device'2-7 to a computerized manual edge-tracing procedure'8 and methods that make use of computer edge detection algorithms to determine arterial dimensions in a two-dimensional projection. [19][20][21][22][23][24][25][26][27][28][29] Several investigators have also applied densitometric procedures in an attempt to derive crosssectional area measurements from single-view coronary cineangiograms.…”

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confidence: 99%

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Assessment of short-, medium-, and long-term variations in arterial dimensions from computer-assisted quantitation of coronary cineangiograms.

Reiber¹,

Serruys²,

Kooijman³

et al. 1985

Circulation

794

199

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Section: Discussionsupporting

confidence: 45%

mentioning

confidence: 99%

Assessment of short-, medium-, and long-term variations in arterial dimensions from computer-assisted quantitation of coronary cineangiograms.

Reiber¹,

Serruys²,

Kooijman³

et al. 1985

Circulation

794

199

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“…Alderman et al 43 have developed a method for automated, operator-interactive definition of the lumen borders of a coronary artery segment visualized during clinical arteriography. Selected portions of the arteriographic image are projected at high magnification into a television camera and stored digitally in magnetic memory as a data matrix with spatial resolution of 480 X 512 pixels and with 8-bit gray-scale resolution.…”

Section: Methods Using Digital Representation Of Arterial Imagesmentioning

confidence: 99%

Arteriographic assessment of coronary atherosclerosis. Review of current methods, their limitations, and clinical applications.

Brown¹,

Bolson²,

Dodge³

1982

Arteriosclerosis

136

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Coronary arteriography is presently the definitive procedure for characterizing the location and severity of coronary atherosclerosis; and despite certain reported limitations, we believe that the properly performed coronary arteriogram provides a true picture of the arterial lumen in life. Yet this widely-used clinical tool is currently limited by imprecise and, to a certain extent, inappropriate subjective methods of interpretation. More objective methods for analysis of the arteriographic information content have been described. These include caliper- and vernier- based systems for measuring relative arterial narrowing, computer-assisted methods for making accurate measurements of absolute stenosis dimensions, and photodensitometric methods for extracting three-dimensional information from a planar image of the stenosis. The availability of these objective techniques has resulted in a considerable increase in our understanding of pathogenic mechanisms in coronary disease. Advances include an expanded understanding of the mechanisms of action of nitroglycerin and verapamil and of the coronary artery constriction induced by drugs of isometric stress. Stenosis measurements have served as the basis for evaluation of certain noninvasive techniques used to detect coronary disease. An analytical approach has been developed to characterize the progression (and regression) of coronary disease from serial arteriograms. We believe clinical investigations based on these techniques hold considerable promise for further advances in the understanding of human coronary pathophysiology.

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“…The resolution of this system has been demonstrated to be ±0.06 mm. 20 Three coronary segments were analyzed in patients undergoing PTCA in the left coronary artery system as illustrated in Figure IA. Segment 1 (dilated segment) was defined as the 5-mm segment centered on the narrowest point of the coronary stenosis as viewed in the arteriogram before PTCA.…”

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confidence: 99%

Coronary artery vasoconstriction routinely occurs after percutaneous transluminal coronary angioplasty. A quantitative arteriographic analysis.

et al. 1988

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To determine whether percutaneous transluminal coronary angioplasty (PTCA) increases coronary artery luminal dimensions by stretching and injuring ("paralyzing") the smooth muscle of the arterial wall, we prospectively analyzed spontaneous changes and then intracoronary nitroglycerin-induced changes in segmental coronary artery diameters during the first 30 minutes after uncomplicated single-vessel PTCA in 10 patients. Five additional patients received intravenous nitroglycerin throughout the procedure to determine whether nitroglycerin could prevent vasoconstriction after PTCA. All of the patients were maintained on oral doses of diltiazem and aspirin at the time of the study. Coronary arteriography was performed at 2, 5, 15, and 30 minutes after PTCA and then 3 minutes after 300 ,ug i.c. nitroglycerin. Quantitative measurements (computerized edge-detection) were performed at each time, in coronary segments centered in the dilated segment, distal to the dilated segment, and in a control vessel not manipulated with the balloon catheter or guidewire. Progressive vasoconstriction (defined as a loss of diameter that was reversed by intracoronary nitroglycerin) was observed after PTCA in the dilated and distal segments (10 of 10 patients) but not in the control segment. The vasoconstriction in the dilated segment at 30 minutes (mean, 30±4%) was highly statistically significant compared with vasoconstriction at 2 and 5 minutes after PTCA (p

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<title>Quantitation Of Coronary Artery Dimensions Using Digital Image Processing</title>

Cited by 45 publications

References 0 publications

Assessment of short-, medium-, and long-term variations in arterial dimensions from computer-assisted quantitation of coronary cineangiograms.

Assessment of short-, medium-, and long-term variations in arterial dimensions from computer-assisted quantitation of coronary cineangiograms.

Arteriographic assessment of coronary atherosclerosis. Review of current methods, their limitations, and clinical applications.

Coronary artery vasoconstriction routinely occurs after percutaneous transluminal coronary angioplasty. A quantitative arteriographic analysis.

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