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1 From the Department of Diagnostic Radiology (E.S., M.K., A.B., T.H.N., R.W.G.) and Medical Clinic I (H.P.K.), University Hospital, Aachen University of Technology, Pauwelsstrasse 30, 52057 Aachen, Germany; Departments of Medicine (Cardiovascular Division) (E.S., M.S., R.M.B., W.J.M.) and Radiology (W.J.M.), Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Mass; Philips Research Laboratories, Hamburg, Germany (T.S.); and Philips Medical Systems, Best, the Netherlands (M.S., R.M.B.). Received March 23, 2003; revision requested May 28; final revision received August 12; accepted September 8. Address correspondence to E.S. (e-mail: spuenti@rad.rwth-aachen.de).
The authors compared radial steady-state free precession (SSFP) coronary magnetic resonance (MR) angiography, cartesian k-space sampling SSFP coronary MR angiography, and gradient-echo coronary MR angiography in 16 healthy adults and four pilot study patients. Standard gradient-echo MR imaging with a T2 preparatory pulse and cartesian k-space sampling was the reference technique. Image quality was compared by using subjective motion artifact level and objective contrast-to-noise ratio and vessel sharpness. Radial SSFP, compared with cartesian SSFP and gradient-echo MR angiography, resulted in reduced motion artifacts and superior vessel sharpness. Cartesian SSFP resulted in increased motion artifacts (P < .05). Contrast-to-noise ratio with radial SSFP was lower than that with cartesian SSFP and similar to that with the reference technique. Radial SSFP coronary MR angiography appears preferable because of improved definition of vessel borders.
© RSNA, 2004
Index terms: Coronary angiography, comparative studies, 54.121412, 54.121415, 54.121416, 54.12142, 54.12149 Coronary vessels, MR, 54.12142 Magnetic resonance (MR), k-space Magnetic resonance (MR), motion correction Magnetic resonance (MR), three-dimensional
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