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Abstract #3259

QISS FISS (Quiescent-Interval Slice-Selective Fast Interrupted Steady-State):  A Best-of-Both-Worlds Solution to Nonenhanced MR Angiography at 3 Tesla

Robert R. Edelman1,2, Shivraman Giri3, and Ioannis Koktzoglou4,5

1Radiology, NorthShore University HealthSystem, Evanston, IL, United States, 2Radiology, Northwestern University, Chicago, IL, United States, 3Siemens HealthCare, 4Radiology, NorthShore University HealthSystem, 5Radiology, University of Chicago

QISS is a robust method for nonenhanced MRA that conventionally uses a TrueFISP readout. At 3 Tesla, use of TrueFISP is challenging due to high RF power deposition and sensitivity to off-resonance artifacts. In order to overcome these limitations, we implemented a QISS technique that incorporates a new type of readout that is a hybrid of TrueFISP and FLASH pulse sequences, which we call “Fast Interrupted Steady-State” (FISS). A pilot study was conducted to evaluate the potential benefits of QISS FISS at 3 Tesla for evaluation of the peripheral arteries and great vessels of the chest.

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