|Coronal and sagittal postcontrast T1-weighted spin-echo images show an enlarged pituitary with rim enhancement and no internal enhancement (arrows). Findings are suggestive of nonhemorrhagic pituitary infarct, i.e., Sheehan syndrome.|
Coronal and sagittal postcontrast T1-weighted spin-echo images show atrophy of the anterior pituitary gland (arrows) on follow-up MRI 1 year later.
|Examination of conjugate extraocular movements showing right adduction palsy and right partial ptosis|
|Sagittal T1-weighted MRI (A) shows hemorrhage involving the anterior thalamus just beneath the fornix. Axial T2*-weighted MRI (B) shows bilateral fornix hemorrhage with asymmetrical bithalamic involvement.|
(A) Narrowing of upper cervical canal (white arrow) and myelomalacia at C2 (black arrow). (B) Tip of the odontoid and anterior arch of atlas are well above Chamberlain line (white line) and the clivus canal angle is <150° (yellow line).
|(A) Cavitation of the basal ganglia on axial CT scan of the brain. (B) Axial susceptibility-weighted MRI shows iron deposition in basal ganglia.|
Visual assessment of the medial temporal lobe atrophy was performed on a single MR-slice posterior to the amygdala and the mamillary bodies.
The was positioned so the hippocampus, the pons and the cerebral peduncles were all visible. The visual assessment included hippocampus proper, dentate gyrus, subiculum, parahippocampal gyrus, entorhinal cortex and surrounding CSF spaces such as temporal horn and choroid fissure. The right and left side were rated separately. Scores range from 0 (no atrophy) to 4 (end stage atrophy).
Biomarkers for Alzheimer: Neuropathologic Correlates of Hippocampal Atrophy ...: The volume of the hippocampus measured with structural magnetic resonance imaging (MRI) is increasingly used as a biomarker for Alzheimer'...
|Axial T2 fluid-attenuated inversion recovery MRI of the brain demonstrates decreased T2 fluid-attenuated inversion recovery hyperintensity in the medulla following 6 weeks of IV antibiotics.|