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Noninvasive characterization of microcirculation at the level of both coronary conductance and resistance vessels is of major importance for the understanding of microvascular adaptive processes in the heart. The objective of this study was to determine simultaneously myocardial perfusion and microvessel diameters in the myocardium by magnetic resonance (MR) imaging within the same heart. A MR imaging...
Changes in the microcirculation may compensate for the reduction of perfusion supplied by the stenotic vessel. The objective of this study was to determine functional adaptive processes in the microcirculation by magnetic resonance imaging (MRI) during coronary stenosis in the rat heart. Left coronary artery (LAD) narrowing (cross-sectional area 49.8 +/- 3.5%; n = 14) or sham operation (n = 10) was...
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