Field Strength and Gadolinium Dose Dependency of Dynamic Time-Resolved 4D MRA of the Brain Using Golden-Angle Radial Sparse Parallel (GRASP) MRI
Adam Goldman-Yassen1,2, Vishal Patel3, Maria J. Borja3, Anna Derman4, Duan Chen5, Siddhant Dogra3, Roy Wiggins3, Kai Tobias Block3, and Seena Dehkharghani3,6
1Department of Radiology, Children's Healthcare of Atlanta, Atlata, GA, United States, 2Department of Radiology and Imaging Sciences, Emory University, Atlanta, GA, United States, 3Department of Radiology, New York University Langone Medical Center, New York, NY, United States, 4Department of Radiology, Maimonides Medical Center, Brooklyn, NY, United States, 5Department of Radiology, Weill Cornell Medical Center, New York, NY, United States, 6Department of Neurology, New York University Langone Medical Center, New York, NY, United States
GRASP MRI obtained as part of routine clinical care, without specific angiographic parameters, can be reconstructed post-hoc into dynamic 4D MR images and can be displayed with high spatial and temporal resolution. Additionally, contrast dose and magnet strength appear to have minimal effect on the diagnostic quality of angiographic images. Further exploration into diagnostic accuracy and the tolerance of varying field strength and dosing to further increasing degrees of acceleration is warranted.
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