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Abstract #5019

3D IR-UTE-Cones for High Contrast MR Imaging of Lamellar Bone

Anthony S. Tadros1, Justin W. West2, Amin Nazaran1, Ya-Jun Ma1, Heinz R. Hoenecke2, Jiang Du1, and Eric Y. Chang1,3

1Department of Radiology, University of California, San Diego Medical Center, La Jolla, CA, United States, 2Orthopedic Surgery, Scripps Clinic, La Jolla, CA, United States, 3Radiology Service, VA San Diego Healthcare System, San Diego, CA, United States

Lamellar bone is poorly evaluated using conventional magnetic resonance (MR) imaging secondary to its inherently short T2 relaxation time. Rather, the contours of lamellar bone are often inferred based on marrow signal. In the setting of shoulder instability or pre-operative planning for arthroplasty, rotator cuff integrity and glenoid bone defects are frequently assessed using both MRI and computed tomography (CT), respectively. An MR imaging technique to directly image lamellar bone could potentially eliminate the need for a CT scan and be particularly useful for young patients with acute shoulder instability.

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