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Abstract #2152

T1 and T2* Relaxometry MRI of Knee Growth Plate Using Ultra-Short TE MRI: Feasibility Study

Kwan-Jin Jung1 and Elahe Ganji2
1Biomedical Imaging Center, Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, United States, 2Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, IL, United States

Synopsis

Keywords: Cartilage, Relaxometry, growth plate, UTEGrowth plates are one of the most common sites of injury in the young skeleton. The growth plate is an interwoven and multi-layered interfacial tissue that transitions from cartilaginous to mineral morphology as it extends into metaphysis of long bones. We used Ultrashort Echo-time (UTE) MR imaging as a promising sensitive technique to detect the growth plate transition that has short T2. The UTE sequence was extended to measure T2* and T1 using multi-echoes and variable flip angles. The contrast of the transitional zone was further enhanced by a ratio of T1 over T2*.

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Keywords