Meeting Banner
Abstract #4085

Free Breathing Abdominal DCEMRI with High Spatio-Temporal Resolution

Manojkumar Saranathan1, Dan W. Rettmann2, Brian Andrew Hargreaves1, Andreas Loening1, Anja C.S Brau3, KyungHyun Sung1, Shreyas S. Vasanawala1

1Dept. of Radiology, Stanford University, Stanford, CA, United States; 2Applied Science Laboratory, GE Healthcare, Rochester, MN, United States; 3GE Healthcare, Menlo Park, CA, United States

Dynamic contrast-enhanced abdominal imaging is commonly performed in a series of breathholds following injection of Gadolinium contrast. In many patients, breathholding is not possible or unreliable, leading to ghosting and blurring. Free-breathing radial VIBE or navigator gating can address this problem, but with a temporal resolution penalty. Here, we used DISCO a navigator-gated 3D SPGR sequence with a combination of parallel imaging, viewsharing and pseudo-random variable density k-space sampling. This enables free-breathing dynamic contrast enhanced abdominal imaging at high temporal and spatial resolution.

Keywords

abdominal acceleration acknowledgments administration afforded agent applied array arterial artifacts assent assessed bandwidth bipolar blurring bottom breath breathing called capture central channel clearly clinical coherent coil collecting combination commonly comparable computed confined consecutive consent contrast cortex cylindrical density depended depicted dept despite detection developed diaphragm disco dual dynamic edge eliminated elliptical enables enabling enhanced enhancement excellent fast feasibility foundation frame free full function gadolinium gains gated gating ghosting grid highlighting hold incorporated informed injection invest kidneys laboratory liver many mask matrix minimized modified much navigated navigation navigator nearest need neighbor note outer parallel park partitions patient patients peak penalty periods plots position post problem progressive prospectively pseudo radial radiology random readout recently reconstruction referred reported representative resolution respiratory sampling schemes science segmented separation sequential series sharing slabs slices space spatial spread still subtraction successive sung support suppression surveillance system temporal thick torso track typically unreliable variable varying vibe view water year