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Abstract #1219

BOLD MRI of lower extremity muscles : venous insufficiency is affecting BOLD signal

Hatice T SANAL 1 , Sertan GEZGIN 1 , and Cem TAYFUN 2

1 Radiology, Gulhane Military Medical Academy, ANKARA, Kecioren, Turkey, 2 Radiology, Gulhane Military Medical Academy (R), ANKARA, Kecioren, Turkey

Several parameters on T2* time-intensity curves, obtained from lower extremity muscles of patients having arterial occlusive disease and healthy volunteers, have been evaluated through BOLD MR imaging. Time to peak (TTP) value longer than 40 sec suggest insufficient blood sources to the muscle with a sensitivity and specificity of % 83.3, % 92.3, respectively. Interestingly, in one volunteer with normal artrerial system but with venous insufficency, TTP was longer than expected. TTP value with a threshold of 40 sec, can exclude stenosis with a great sensitivity, unless venous insufficiency is exluded.

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