Abstract We use the Hill function to analyze the dynamics of Tc-99m 2 methoxy-isobutyl-isonitrile (99mTc-MIBI) scintigraphy data and to examine the earlier lower extremity microvascular perfusion of diabetic patients without… Click to show full abstract
Abstract We use the Hill function to analyze the dynamics of Tc-99m 2 methoxy-isobutyl-isonitrile (99mTc-MIBI) scintigraphy data and to examine the earlier lower extremity microvascular perfusion of diabetic patients without typical clinical symptoms and with the preserved normal ankle-brachial index (ABI). Eighty-eight participants (30 healthy control, 34 diabetic patients, and 24 diabetic patients with peripheral arterial disease [PAD]) were recruited and applied 99mTc-MIBI scintigraphy. Fourteen diabetic patients with PAD also underwent computed tomography angiography (CTA) examination and were performed endovascular interventions. Diabetic patients with normal ABI already have significantly impaired maximum 99mTc-MIBI muscle perfusion counts (P < .001) and the peak times of the lower extremity muscle perfusion (P < .05). 99mTc-MIBI scintigraphy showed great consistent with ABI and CTA in detecting PAD. 99mTc-MIBI scintigraphy was also found to be effective in evaluating lower extremity circulation after endovascular interventions (P < .05). Hill function-based analysis of 99mTc-MIBI scintigraphy might be effective method to evaluate earlier lower extremity perfusion changes in diabetic patients.
               
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