Meeting Banner
Abstract #3895

Flow-Sensitized Dephasing Prepared SSFP: A New Noncontrast MRA Technique

Zhaoyang Fan1,2, John Sheehan1, Xiaoming Bi3, Rohan Dharmakumar1, Renate Jerecic3, James Carr1, Debiao Li1,2

1Radiology, Northwestern University, Chicago, IL, USA; 2Biomedical Engineering, Northwestern University, Evanston, IL, USA; 3Siemens Medical Solutions USA, Inc., Chicago, IL, USA

This work proposed a new noncontrast subtraction MRA technique based on flow-sensitized dephasing (FSD) prepared SSFP. Its Mechanism and technical consideration were presented, along with preliminary results on volunteers at 1.5T. The feasibility of this approach on multiple vascular territories was successfully demonstrated. Further systematic optimization of the parameters is warranted for various applications. The flexibility of adapting the FSD strength to individual flow conditions of the patient for different vascular territories and degrees of disease is a major advantage of this new approach. This technique has the potential to be used as a screening tool for whole-body vascular examination.