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Abstract #5556

Quantitative Image Analysis of Real-Time Golden Angle Radial iSSFP for Interventional MRI

Samantha Mikaiel1,2, Thomas Martin1,2, Kyunghyun Sung1,2,3, and Holden H Wu1,2,3

1Radiological Sciences, University of California Los Angeles, Los Angeles, CA, United States, 2Biomedical Physics, University of California Los Angeles, Los Angeles, CA, United States, 3Bioengineering, University of California Los Angeles, Los Angeles, CA, United States

Real-time visualization is crucial to the success of MRI-guided minimally invasive cancer interventions. We have developed golden-angle (GA) ordered radial integrated-SSFP (iSSFP), which can suppress banding artifacts associated with bSSFP while maintaining similar T2/T1 contrast. In this work, we further analyze the tissue contrast as well as passive visualization of interventional needles using GA radial iSSFP. In volunteer scans, we verify that GA radial iSSFP achieves T2/T1 tissue contrast similar to bSSFP while suppressing banding artifacts. With phantom scans we show that iSSFP reduced the size of the needle-induced signal void, versus that seen on bSSFP. These advantages of GA Radial iSSFP show its potential for improving real-time MRI-guided interventions.

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