Abstract #3867
Initial evaluation of non-contrast-enhanced MRA in patients with peripheral arterial occlusive disease at 7 T
Anja Fischer 1,2 , Stefan Maderwald 1,2 , Sren Johst 1,2 , Stephan Orzada 1,2 , Mark E. Ladd 2,3 , Lale Umutlu 1,2 , Thomas C. Lauenstein 1 , Horst-Wilhelm Kniemeyer 4 , and Kai Nassenstein 1
1
Department of Diagnostic and Interventional
Radiology and Neuroradiology, University Hospital Essen,
Essen, Germany,
2
Erwin
L. Hahn Institute for Magnetic Resonance Imaging,
University Duisburg-Essen, Essen, Germany,
3
Medical
Physics in Radiology, German Cancer Research Center,
Heidelberg, Germany,
4
Clinic
for Vascular Surgery, Elisabeth Hospital Essen, Essen,
Germany
The purpose of this study was to achieve initial
experience with non-contrast-enhanced MRA at 7 T in
patients with PAOD. T1w Turbo-FLASH imaging was
performed on a 7 T whole-body scanner utilizing a
16-channel transmit/receive coil and an AngioSURF table
in addition to contrast-based MRA at 1.5 T. The number
of stenoses and occlusions was counted for each arterial
segment in both MRA techniques. Arterial anatomy was
accurately demonstrated at 7 T both proximal and distal
to stenotic disease. The sensitivity and specificity
values of 7 T ne-MRA for detecting segments with
hemodynamically significant stenosis were 93% and 98%,
respectively.
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