Meeting Banner
Abstract #1772

3D Stack-of-Stars Radial Imaging for Motion-Robust Free-Breathing Hepatobiliary Phase Imaging

Matthias R Muehler1, Ty A Cashen2, Kang Wang2, Ali Ersoz3, Ersin Bayram4, and Scott B Reeder1,5,6,7

1Departments of Radiology, University of Wisconsin, Madison, WI, United States, 2Global MR Applications and Workflow, GE Healthcare, Madison, WI, United States, 3Global MR Applications and Workflow, GE Healthcare, Waukesha, WI, United States, 4Global MR Applications and Workflow, GE Healthcare, Houston, TX, United States, 5Biomedical Engineering, University of Wisconsin, Madison, WI, United States, 6Medical Physics, University of Wisconsin, Madison, WI, United States, 7Medicine and Emergency Medicine, University of Wisconsin, Madison, WI, United States

Free-breathing hepatobiliary phase imaging with gadoxetate disodium is challenging due to respiratory motion. This study examines an intrinsically motion-robust fat-suppressed T1-weighted 3D stack-of-stars gradient echo technique (LAVA Star) with soft gating. An estimate of respiratory motion is derived either from a navigator tracker with a wide acceptance window, which produces the best image quality, or self-navigation, which offers the most convenient workflow, particularly in challenging clinical situations. In either case, the retrospective soft gating reduces scan time variability compared to a conventional prospective navigator.

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

Join Here