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Optimization of coronary whole-heart MRA free-breathing technique at 3 Tesla |
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| Authors: | Gharib Ahmed M Abd-Elmoniem Khaled Z Herzka Daniel A Ho Vincent B Locklin Julie Tzatha Efstathia Stuber Matthias Pettigrew Roderic I |
| Institution: | aDiagnostic Radiology and NIDDK, NIH, Bethesda, MD 20892, USA;bPhilips Research North America, Clinical Sites Research Program, Bethesda, MD 20892, USA;cDepartment of Radiology, Uniformed Services University of the Health Sciences, Bethesda, MD 20892, USA;dDiagnostic Radiology Department, NIH, Bethesda, MD 20892, USA;eRadiology, Medicine, Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD 21287, USA;fNIBIB, NIH, Bethesda, MD 20892, USA |
| Abstract: | Four different techniques for 3-T whole-heart coronary magnetic resonance angiography (MRA) using free-breathing three-dimensional segmented parallel imaging and adiabatic T2-preparation were assessed. Coronary MRA at 3 T is improved by shortening the acquisition window more than employing the highest spatial resolution. Double-oblique whole-heart acquisitions result in better overall image quality and allow for better delineation of the left anterior descending coronary artery. It is possible to attain shorter acquisition windows and a smaller voxel size at 3 T than previously reported at 1.5 T. |
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