Vascular reserve in brain resilience: pipes or perfusion?

Does brain reserve protect older women from vascular depression?

OBJECTIVES Brain reserve theory, typically discussed in relation to dementia, was examined with regard to late-life depression symptomatology and cerebrovascular burden (CVB) in older-old women. METHOD It was predicted that in a 6-year longitudinal sample (Health and Retirement Study) of 1,355 stroke-free women aged 80 years and older, higher levels of depressive symptomatology (8-item Center...

Myocardial perfusion reserve in ischemic heart disease.

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 ...

Analysis of Cerebral Perfusion and Vascular Reserve after Combined Revascularization for Moyamoya Disease

Background and purpose: Moyamoya disease is a progressive occlusive disease of the cerebral arteries. Various vascular reconstruction surgeries have been reported, but the most appropriate procedure remains unclear. We have preferred to perform a combined direct and indirect bypass to the Rolandic region to prevent ischemic stroke. The purpose of this study was to evaluate the surgical results ...