Myocardial perfusion reserve compared with peripheral perfusion reserve: A [13N]ammonia PET study

Myocardial perfusion reserve compared with peripheral perfusion reserve: A [13N]ammonia PET study

INTRODUCTION [13N]ammonia PET allows quantification of myocardial perfusion. The similarity between peripheral flow and myocardial perfusion is unclear. We compared perfusion flow in the myocardium with the upper limb during rest and adenosine stress [13N]ammonia PET to establish whether peripheral perfusion reserve (PPR) correlates with MPR. METHODS [13N]ammonia myocardial perfusion PET-scan...

Mapping of Myocardial ASL Perfusion and Perfusion Reserve Data

INTRODUCTION: Arterial spin labeling (ASL) is an emerging tool for the assessment of myocardial perfusion and perfusion reserve in humans. This technique requires registration of multiple images and suffers from low signal-to-noise ratio (SNR) [1-4]. In this work, we present a novel approach for mapping perfusion and perfusion reserve based on ASL data. Unregistered spatial data is transformed ...

Effect of aging on myocardial perfusion reserve.

UNLABELLED Myocardial perfusion reserve (hyperemic divided by basal myocardial blood flow) describes vasodilator responsiveness of coronary-resistive vessels. The effect of aging and gender on myocardial perfusion reserve remains controversial. METHODS We studied 56 normal volunteers (21 women, 35 men; aged 50 +/- 20 yr, range 21-86 yr) with 15O-water PET to measure myocardial blood flow duri...

Myocardial perfusion reserve in ischemic heart disease.

Myocardial perfusion reserve in adults with cyanotic congenital heart disease.

In patients with cyanotic congenital heart disease (CCHD), a right-to-left shunt results in systemic hypoxemia. Systemic hypoxemia incites a compensatory erythrocytosis, which increases whole blood viscosity. We considered that these changes might adversely influence myocardial perfusion in CCHD patients. Basal and hyperemic (intravenous dipyridamole) perfusion measurements were obtained with [...