… This study presents a novel application for PC VIPR flow MRI to simultaneously … during
hypercapnia in less than 6 min without the use of MRI contrast agent. High resolution 4D flow MRI …

… a hypercapnic challenge to alter P ET CO 2 and bring about precise changes in portal vein
flow … in a relatively “blunt” increase in portal vein flow following the meal challenge. Moreover, …

… MRI measurement of changes in cerebral blood flow and venous blood volume in grey matter
during graded hypercapnic and hypocapnic challenges in … The BOLD-specific capnic flow–…

… high enough flow rate to support the increased tidal volume seen with hypercapnia. An … A
hyperoxic hypercapnic challenge improved tumour oxygenation and increased contrast uptake …

… Findings in this study suggest that hypercapnic-hypoxia gas challenge may be a useful
maneuver in physiological MRI as it preserves vasodilatory response yet does not alter brain …

… to hypercapnic challenge in the conscious condition resulting in enhanced T2* MRI signal
… reactivity and cerebral blood flow can be studied with MRI and hypercapnic challenge. …

… This notion has since been challenged, and correction methods have been devised to …
has reported that for non iso-metabolic hypercapnic challenges for calibration, one can find a …

… These findings challenge the assumption that the CSA of the … Early studies used magnetic
resonance imaging (MRI) and … (22) examined MCA diameter during hypercapnia (HC) at an P…

… velocity measured with TCD in response to a CO 2 challenge are … blood flow velocity
changes measured with TCD underestimate underlying changes in CBF under high hypercapnic …

… and hypercapnic challenge. The main goals of this study were (1) to determine whether CBF
can be measured under awake and restrained conditions using MRI, (… to hypercapnia under …