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Abstract #3251

Renal Susceptibility Imaging: Analysis of Susceptibility Weighted Imaging and Quantitative Susceptibility Mapping in Transplanted Kidneys

Hyun-Seo Ahn1, Hyo Sung Kwak2, and Sung-Hong Park1
1Bio and Brain Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea, 2Department of Radiology, Bio medical Research Institute of Chonbuk National University Hospital, Jeonju, Republic of Korea

Renal susceptibility imaging is challenging due to the motion artifacts in kidney. In this study, susceptibility weighted imaging (SWI) and quantitative susceptibility mapping (QSM) were performed on transplanted kidney patients, who show less kidney motions. QSM images successfully demonstrated oxygen gradients in kidney, i.e., the hypoxic state in medulla and the fully oxygenated state in cortex. Heterogeneous susceptibility distributions were observed near medullary veins, presumably due to medullary hypoxia and incomplete local phase unwrapping. Further studies are necessary for more complete local phase unwrapping and quantification of oxygenation levels in medullary veins from QSM images.

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