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The nature of the coupling between neuronal activity and the hemodynamic response is the subject of intensive research. As a means to simultaneously measure parametric changes of T2(*), initial intensity (I(0)) and perfusion with high temporal resolution, a multi-image EPI technique with slice-selective inversion recovery (ssIR) for arterial spin labeling(More)
PURPOSE To compare calf muscle Blood Oxygenation Level-Dependent (BOLD) response during ischemia in patients suffering from peripheral arterial occlusive disease (PAOD) and age-matched non-PAOD subjects. MATERIALS AND METHODS PAOD patients with symptoms of intermittent calf claudication and an age-matched control group underwent T 2*-weighted single-shot(More)
PURPOSE To minimize venous overlay at the calf station in contrast-enhanced three-dimensional (3D) stepping-table magnetic resonance angiography (MRA) using a continuous cuff-compression technique during MR data acquisition. MATERIAL AND METHODS Within 14 months, 32 patients suffering from symptomatic peripheral arterial occlusive disease (PAOD) with a(More)
PURPOSE To perform MR-guided interventions, repetitive injections of contrast agent in the arterial system are necessary. By reducing the intraarterial bolus length during image acquisition and consecutively reducing the gadolinium-chelate-based contrast agent dose, we focus on a comparable vascular depiction. The tradeoff in reducing bolus length is(More)
The measurement of retinal flow, especially at the capillary level, is of scientific as well as of practical clinical interest. A clinical method of retinal flow measurement should provide accurate and objective information about “true capillary flow” (cf. sections L1). Therefore, the method should allow the measurement of: flow in separate retinal(More)
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