Magnetic resonance (MR) imaging features of white matter lesions, often seen in the elderly,
are correlated with histologic ˆndings. Dilatation of perivascular spaces is seen, especially …

Fig. 1.—90-year-old man without neurologic deficit. A, T2-weighted (b= 0) image shows
hypointensity in deep gray nuclei (arrows) due to senile iron deposition. B, Diffusion-weighted (b…

Background and Purpose—Echo-planar gradient-echo T2*-weighted MR imaging (GRE-EPI)
may detect hypointense lesions representing microhemorrhages with high sensitivity. The …

Posterior reversible leukoencephalopathy syndrome is characterized by reversible white
matter lesions. However, ischemic injury with irreversible damage may occur. This pictorial …

Hypercapnia and hypocapnia produce cerebral vasodilation and vasoconstriction, respectively.
However, regional differences in the vascular response to changes in P a co 2 in the …

Regional cerebral blood flow (CBF) and oxygen metabolism can be measured by positron
emission tomography (PET) with 15 O-labeled compounds. Hemoglobin (Hb) concentration of …

IJLmaps in the lower slices due to the airways and in the higher slices due to increased skull
attenuation. However, differences were< 5% in all cerebral tissue regions, thus assumption …

We describe a case of carbon monoxide poisoning that led to pallidoreticular damage and
delayed leukoencephalopathy. Serial diffusion-weighted MR imaging was performed. A …

Objective: To determine the role of KL-6 (Krebs von den Lungen-6) in evaluating the disease
severity of pulmonary lesions in rheumatoid arthritis (RA) compared with high resolution …

The hyperdense middle cerebral artery (MCA) dot sign representing a thromboembolus is
one of the important computed tomography (CT) findings for acute stroke on unenhanced CT …