Abstract #3578

Scannerless real-time MRI

Frank Preiswerk¹, Cheng-Chieh Cheng¹, Sanjay S. Yengul^1,2, Lawrence P. Panych¹, and Bruno Madore¹

¹Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, United States, ²Mechanical Engineering, Boston University, Boston, MA, United States

MRI can provide favorable image quality for image-guided interventions, but both magnetic field of the scanner and limited patient access inside the bore impose many limitations on image-guidance endeavors. The aim of this work was to estimate MRI of respiratory organ motion outside the scanner, which allows for a wider range of interventional applications. A single-element ultrasound transducer was used as a surrogate for the MR scanner outside the bore, after the correlation between both signals had been learned in a preceding training phase. Validation of estimated MR images outside the bore was performed using tracked 2D ultrasound.

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