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Abstract #0323

Feasibility of Water-Fat Separation for 2D Cardiac CINE Imaging with a Phase-Sensitive Approach on a 0.6T magnet

Dinghui Wang1, Tzu Cheng Chao1, Jacinta Browne1, Ece Ercan2, Michal Povazan2, Spencer Waddle 1,3, Jouke Smink2, and Tim Leiner1
1Radiology, Mayo Clinic, Rochester, MN, United States, 2MR Clinical Science, Philips Healthcare, Best, Netherlands, 3MR R&D, Philips Healthcare, Rochester, MN, United States

Synopsis

Keywords: Image Reconstruction, Fat and Fat/Water Separation, Midfield MRI, EPI, cine, CMR

Motivation: Both fat and water appear bright in a bSSFP cine CMR. Distinguishing fat and water signals will provide additional information for diagnosis. However, fat-water separation becomes more difficult on a midfield scanner.

Goal(s): To achieve fat-water separation without additional time cost on a 0.6T scanner.

Approach: A phase sensitive algorithm was implemented to separate fat signals from a bSSFP EPI cine CMR scan.

Results: The bSSFP EPI sequence enables shorter scan time and lower SAR than the conventional sequence. In addition, fat and water signals appear out-of-phase in the images and become separable with the phase sensitive algorithm after background phase correction.

Impact: Water and fat signals become difficult to separate with midfield MRI scanners. The presented work utilizes an EPI scan to improve scan speed of a cine series while achieving fat and water separation with the phase information.

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Keywords