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Coronary Artery: Quantitative Evaluation of Normal Diameter Determined with Electron-Beam CT Compared with Cine Coronary Angiography—Initial Experience¹

¹ From the Department of Radiology, Stanford University School of Medicine, Calif (N.F., M.P., G.D.R.); and First Department of Internal Medicine, Osaka City University, Japan (Y.K.). From the 1999 RSNA scientific assembly. Received July 17, 2001; revision requested September 10; revision received February 20, 2002; accepted February 15. Address correspondence to N.F., Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine (M4), 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan (e-mail: nobusada@ma.kcom.ne.jp).

Eight male heart transplant recipients underwent contrast material–enhanced electron-beam computed tomographic angiography. Coronary artery diameters measured with fixed thresholds and adaptive line density profile (LDP) methods were calculated relative to findings at quantitative coronary angiography. Variation with fixed-threshold methods was significantly greater than that with LDP methods because of variations in vessel enhancement. Thus, more accurate measurements of vessel diameter were obtained with LDP methods.

© RSNA, 2002

Index terms: Computed tomography (CT), electron beam, 54.12112, 54.12116, 54.12117, 54.12118, 54.12119 • Computed tomography (CT), image processing • Coronary vessels, CT, 54.1211, 54.12116

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