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Abstract #1411

Accelerating Time-Resolved MRA with Multi-Echo Acquisition

Hyun Jong Jeong1, Christopher S. Eddleman2, Saurabh Shah3, Nicole Seiberlich4, Mark A. Griswold4, James C. Carr5, Timothy J. Carroll1,5

1Biomedical Engineering, Northwestern University, Chicago, IL, United States; 2Neurosurgery, Northwestern University, Chicago, IL, United States; 3Siemens Medical Solutions, Chicago, IL, United States; 4Radiology, University Hospitals of Cleveland, Cleveland, OH, United States; 5Radiology, Northwestern University, Chicago, IL, United States

A new 4D MRA technique called Contrast-enhanced Angiography with Multi-Echo and RAdial k-space (CAMERA) is introduced. With CAMERA, temporal footprint is reduced by a factor of 2 without parallel imaging or undersampling, while increasing SNR. Higher frame rates are achieved by radial sliding window reconstruction. Further acceleration is also possible by incorporating parallel imaging. The technique has been applied to MRA in the intracranial, pulmonary, and renal vessels.