Measuring the diameter of coronary arteries on MR angiograms using spatial profile curves

AJR. American Journal of Roentgenology
R ShimamotoT Toyo-oka

Abstract

The spatial profile curve of the nuclear MR intensity across the short axis of a coronary artery in an MR angiogram results in a gradual up-and-down slope lacking sharp definition, which indicates that display parameters may influence edge recognition. Therefore, our study was designed to determine the appropriate window setting and to devise a method of accurately measuring the diameter or width of the artery independent of window parameters. The diameter of a coronary artery measured on MR coronary arteriography significantly varied with experimentally selected display parameters. When compared with the diameter on contrast-enhanced coronary arteriograms, the window center on MR angiograms at the midpoint between the peak intensity of the intravascular lumen and the background intensity and the window width of a quarter or a half of the intensity difference between the two were proven to be appropriate. The angiographic diameter corresponded to the diameter obtained at 65% +/- 9% of the peak intensity on the spatial profile curve across the short-axis MR coronary angiogram. Accordingly, 65% of the peak intensity indicates the diameter of the coronary artery. Thus, the intensity profile curve independent of the window setting ...Continue Reading

Citations

Nov 26, 2003·Circulation Journal : Official Journal of the Japanese Circulation Society·Nobusada FunabashiIssei Komuro
Jul 28, 2004·Circulation Journal : Official Journal of the Japanese Circulation Society·Nobusada FunabashiGeoffrey D Rubin
Oct 21, 2000·Japanese Heart Journal·J SuzukiM Omata
Jan 5, 2005·Journal of the American College of Cardiology·Masahiro TerashimaMichael V McConnell
May 20, 2021·Cardiovascular Engineering and Technology·Belen Rodriguez-GarciaAbdul I Barakat
Apr 13, 1999·Radiologic Clinics of North America·A J Duerinckx

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