Abstract #4905

Cardiac and Respiratory Self-Gated Motion-Corrected Free-Breathing Spiral Cine Imaging.

Ruixi Zhou¹, Yang Yang², Roshin Mathew³, and Michael Salerno⁴

¹Biomedical Engineering, University of Virginia, Charlottesville, VA, United States, ²Medicine, Cardiovascular Division, University of Virginia, Charlottesville, VA, United States, ³Medicine, Cardiovascular Medicine, University of Virginia, Charlottesville, VA, United States, ⁴Medicine, Radiology and Medical Imaging, University of Virginia, Charlottesville, VA, United States

We developed a free-breathing continuous-acquisition respiratory and cardiac self-gated spiral cine pulse sequence. Data was acquired using a single spiral interleaf rotated by the golden-angle in time. The cardiac self-gating signal was extracted using principal component analysis on a gridded 8x8 central region of k-space for each spiral, and the respiratory motion is derived from rigid registration for each heartbeat. Images were reconstructed with motion compensated SPIRiT using 16 seconds (2000 spirals) or 8 seconds of data. Free-breathing self-gated spiral cine imaging demonstrated high image quality providing whole heart coverage with clinical spatial and temporal resolution in under 3 minutes.

This abstract and the presentation materials are available to members only; a login is required.

Join Here