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Abstract #4408

Practical Thoughts on Using Repeated Bipolar Gradients for MR-ARFI

Jing Chen1,2, Kim Butts Pauly2

1Electrical Engineering, Stanford University, Stanford, CA, USA; 2Radiology, Stanford University, Stanford, CA, USA

MR-ARFI is a novel method for monitoring HIFU treatments. We have previously shown how to improve the accuracy and precision of MR-ARFI by using the repeated bipolar gradients to encode the displacement. In this work, two practical aspects in the in vivo application of MR-ARFI are analyzed. The bulk motion sensitivity is considered, and a list of optimized encoding width for different tissue types is provided.