BACKGROUND AND PURPOSE: Three-dimensional time-of-flight MR angiography (3D TOF
MRA) often discloses prominent posterior cerebral artery (PCA) laterality in the setting of M1 …

Background and Purpose—Prominent posterior cerebral artery (PCA) laterality upon 3-
dimensional time-of-flight magnetic resonance angiography is often encountered in patients …

Purpose: To verify whether a new grading based on time-of-flight magnetic resonance
angiography source images (TOF-MRAsi) can reflect the abundance of pial collaterals, in …

Objective: To identify the relationship between the magnitude of leptomeningeal collaterals
(LMC) on digital subtraction angiography (DSA) and regional cerebral blood volume …

Background and purpose: The presence of collateral middle cerebral artery (MCA) flow via
the primary collateral pathway is thought to protect against the progression of cerebral …

Background and Purpose Quantitative magnetic resonance angiography (Q-MRA) enables
direct measurement of volume flow rate (VFR) of intracranial arteries. We aimed to evaluate …

Purpose To report the feasibility of parametric color-coded digital subtraction angiography
(DSA) in complementing the traditional, subjective way of leptomeningeal collateral …

Background: Assessing collateral status is important in acute ischemic stroke. The purpose
of this study was to compare multiphasic perfusion computed tomography (MPCT) with …

Objective Collateral flow is important for ischemic brain tissue after an acute occlusion of the
cerebral artery. The purpose of this study was to evaluate baseline collateral flow, on CT …

ABSTRACT INTRODUCTION Characterizing the morphologies of occluded artery segments
may help elucidate the etiology of chronic intracranial artery occlusion. We acquired high …