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Abstract #2266

Free-breathing T2-weighted multi-shot TSE BLADE for pediatric abdominal imaging

Fedel Machado-Rivas1,2, Daniel J Park3, John Conklin1,2, John E Kirsch2,3, and Michael S Gee1,2
1Radiology, Massachusetts General Hospital, Boston, MA, United States, 2Radiology, Harvard Medical School, Boston, MA, United States, 3MGH Martinos Center for Biomedical Imaging, Boston, MA, United States

Abdominal MRI respiratory triggered acquisitions in pediatric populations often fail due to shallow or irregular breathing patterns, degrading image quality and increasing acquisition time. A free-breathing T2-weighted multi-shot TSE BLADE acquisition could overcome these limitations, but through plane motion of respiration causes substantial signal loss from long T2 (such as biliary ducts). We hypothesized that by modifying the refocusing pulse width of the sequence we could mitigate signal loss. Our results show that a 2x refocusing pulse modified free breathing sequence provides comparable image quality and contrast. Furthermore, it offers a fixed acquisition time independent of respiratory patterns.

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