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Abstract #0562

MRI-Guided Cryoablation of Small Renal Tumors

R Jason Stafford1, Sanaz Javadi2, Elizabeth P. Ninan2, Yvette Teniente2, Li Pan3, Surena Matin4, Kamran Ahrar2

1Imaging Physics, The University of Texas MD Anderson Cancer Center, Houston, TX, United States; 2Interventional Radiology, The University of Texas MD Anderson Cancer Center; 3Center for Applied Medical Imaging, Siemens Corporate Research, Baltimore, MD; 4Urology, The University of Texas MD Anderson Cancer Center

Initial experience in clinical implementation of MRI guided cryotherapy on a 1.5T compact and wide bore system is presented. MRI is used for planning, targeting, monitoring and verification of delivery with long term patient follow-up in more than 15 patients. Initial results are summarized for treated patients as well as a description of the procedures and techniques used. We find that MRI guidance appears to provide similar outcomes as those observed in CT, but without additional radiation and a better ability to visualize the iceball in complex tissue environments during therapy delivery.