Abstract #4221
UTE T2* decay analysis of the rabbit supraspinatus tendon at 7T
Gerd Melkus 1,2 , Greg O Cron 1,2 , Peder E Larson 3 , Adnan Sheikh 1,2 , Ian Cameron 1,2 , Hakim Louati 4,5 , Peter Lapner 5 , Tim Ramsay 6 , and Guy Trudel 4,7
1
Department of Medical Imaging, The Ottawa
Hospital, Ottawa, ON, Canada,
2
Department
of Radiology, University of Ottawa, Ottawa, ON, Canada,
3
Radiology
and Biomedical Imaging, University of California San
Francisco, San Francisco, CA, United States,
4
Bone
and Joint Laboratory, University of Ottawa, Ottawa, ON,
Canada,
5
Division
of Orthopaedic Surgery, The Ottawa Hospital, Ottawa, ON,
Canada,
6
Ottawa
Hospital Research Institute, The Ottawa Hospital,
Ottawa, ON, Canada,
7
Department
of Medicine, University of Ottawa, ON, Canada
A 3D ultra-short echo time (UTE) sequence was applied to
study the T2* decay of the rabbit supraspinatus tendon
at 7T. Twelve echoes with echo times ranging from 0.09ms
to 10ms were acquired and four different decay models
(mono- and bi-exponential) were applied to fit the T2*
decay. Two ROIs were chosen for their importance in
supraspinatus tendon surgical repair to estimate T2*.
The study demonstrated that T2* of the rabbit tendon can
be quantified using 3D UTE imaging and that a
3-parameter mono-exponential signal decay model shows
the best fit results for the tendon T2* decay.
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