Spatial misregistration of signal recovered from flowing spins within vascular structures is a
common phenomenon seen in MR imaging of the CNS. The condition is displayed as a …

The authors present a method for obtaining magnetic resonance (MR) images of intra-and
extracranial vessels from thin contiguous transaxial sections. A section-selective gradient …

Many physico-anatomic variables and instrument parameters influence the relative magnetic
resonance signal intensity of vascular channels. The interaction of these mechanisms is …

Twenty patients with known or suspected intracranial vascular lesions were evaluated with
gradient recalled MR (GRASS) imaging, and the results were compared with those obtained …

Nuclear magnetic resonance (NMR) imaging with spin-echo techniques defines vascular
structures with superb anatomic detail. Contrast agents are not necessary as there is …

Magnetic resonance angiography (MRA) can provide significant additional information to
complement the routine spin-echo MR examination of the brain. 1" 13 The idea of a …

Background Early clinical investigators working with whole-body MR imagers appreciated
the contrast provided by the “flow-void phenomenon”[14] and speculated that “inasmuch as …

The phase shifts acquired by motion of excited spins along magnetic field gradients can
result in decreased signal intensity from blood vessels in conventional magnetic resonance …

Two hypotheses were tested:(a) that view-to-view variations in bulk phase and modulus of
magnetization in vascular volume elements can indicate the presence of disordered blood …

To investigate the role of the gradient-echo (GRE) technique in clinical intracranial magnetic
resonance (MR) imaging, 63 patients with a variety of vascular intracranial lesions were …