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Abstract #0603

Real-time MRI endoscopy at up to 10 frames/sec

Xiaoyang Liu1,2, Parag Karmarkar2, Dirk Voit3, Jens Frahm3, and Paul Bottomley1,2

1Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, United States, 2Russell H. Morgan Dept. of Radiology, Johns Hopkins University, Baltimore, MD, United States, 3Biomedizinishe NMR Forschungs GmbH, Max-Plank-Institut fur biophysikalische Chemie, Gottingen, Germany

Mininally-invasive intravascular MRI at 3T and above is capable of providing high resolution imaging from within blood vessels and identifying atherosclerosis using miniaturized detectors ~2mm in diameter. Endoscopic MRI is a technique that employs the miniature probe itself to localize the MRI signal to a sensitive disk, and provide images from the view-point of the probe itself. At 3T, acquisition speed has been limited to 2 frames/sec at 300μm resolution, which although fast, is not truly real-time. Here we report a truly real-time MRI endoscope with fully integrated real-time continuous MRI visualization at up to 10 frames/sec.

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