Meeting Banner
Abstract #1161

Sensitivity Encoded Isotropic Projection Reconstruction (SNIPR) for Whole-Heart Coronary MRA

Jianing Pang1, 2, Behzad Sharif1, Troy LaBounty1, Louise E.J. Thomson1, Daniel S. Berman1, Debiao Li1, 3

1Cedars-Sinai Medical Center, Los Angeles, CA, United States; 2Northwestern University, Chicago, IL, United States; 3University of California, Los Angeles, CA, United States

Proposed method combines sensitivity encoding and undersampled projection reconstruction trajectory to greatly accelerate whole-heart coronary MRA. No separate calibration scans are needed since the densely sampled k-space central region allows direct sensitivity map extraction from image data. Results show that the proposed method reduces aliasing, hence allows a shorter scan time by acquiring less k-space samples, while minimizing the reduction in image quality.

Keywords

ability accelerate acceleration acquiring advantages allows although amount apparent appearance appears appreciable approaches approval arbitrary array artifacts bandwidth behavior better calibration careful carried cedars central channel channels clinical coded coil collected combines comprehensive conjugate consent considerable convergence coronary corporate cost coverage cutting dataset datasets densely described desired detailed determine diagnostic difficult direct drop easier employing encoded encoding ensure estimation extended fast feasible five fold framework full fully gated generate goal gradient greatly healthy heart hence highly interpret isotropic iterative like little long maintaining makes matrix measured medical mimic minimizing minutes natl navigator needed noise northwestern notably optimize pang pixel prepared programs projection projections promising propose protocol pseudo pulse quality readily readout receiver reconstructed reconstruction reduce reduces reformatted relatively required resolution retrospectively sacrifice sampled samples saturated scanner score sense sensitivity separate sets setup shorter simple since software space streaking subject table targeted trajectory triggered troy vessel views volume volunteer whole written yields