Cochleitis

(A, B) Inner ear MRI: 2 contiguous adjacent axial enhanced fat-suppressed T1-weighted high-resolution images, showing asymmetric abnormal contrast enhancement of the right cochlea (arrows) and labyrinthine structures. Left cochlea has no detectable abnormalities, and shows no abnormal contrast enhancement (arrowheads).

Platybasia and basilar invagination in osteogenesis imperfecta

MRI of the cranio-cervical junction

(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).

Neuroferritinopathy

(A) Cavitation of the basal ganglia on axial CT scan of the brain. (B) Axial susceptibility-weighted MRI shows iron deposition in basal ganglia.

MTA Atrophy 0-4

 

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).

Progressive asymmetric parkinsonism and tendon xanthomas

Clinical and radiologic signs

(A) Bilateral tendon xanthomas (arrows). (B) I-123-Ioflupane (I-123 FP-CIT) SPECT: reduced bilateral, asymmetric putaminal uptake (arrowheads). MRI (arrows): diffuse volume loss with signal abnormality, (C) in the globus pallidus, internal capsules on axial fluid-attenuated inversion recovery, (D) cerebral peduncles, substantia nigra, and (E) extensive white matter involvement of the cerebellar hemispheres including dentate nuclei on axial T2-weighted imaging.

Hemangioma of the cavernous sinus in a child

Axial T1-weighted (A) and coronal T2-weighted (B) images show an expansile 3.5 × 2.6 cm tumor in the right cavernous sinus with T1 hypointense and marked T2 hyperintense signal. Coronal (C) and axial (D) contrast T1-weighted images acquired several minutes apart reveal characteristic early heterogeneous and late homogeneous enhancement.

Biomarkers for Alzheimer: Neuropathologic Correlates of Hippocampal 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'...

Dynamic Temporal Change of Cerebral Microbleeds: Long-Term Follow-Up MRI Study

Dynamic changes of MBs over a long-term MRI follow-up.

Some new MBs appeared (A), and some MBs disappeared in the follow-up MRI (B). Black arrows represent the MRI follow-up, while white arrow heads indicate new MBs, and dotted circles identify the location of those MBs which had disappeared.

Full text