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. Edelman^1,2, Shivraman Giri³, and Ioannis Koktzoglou^4,5

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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