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Technique: Multiplanar, multisequence images have been obtained through the brain as a neurodegenerative protocol.
Findings: Changes compatible with Huntington disease once again noted with caudate atrophy and enlargement of the frontal horns of the lateral ventricles. The degree of atrophy has mildly progressed, with increased in the caudate:inner table ratio of 0.25 and decreased frontal horn:intercaudate ratio of 1.46. The arterial spin labelling perfusion demonstrates globally reduced perfusion (not shown).
Small area of speckled susceptibility artefact superior to the frontal horn of the right lateral ventricle with a linear vessel adjacent to it may represent a tiny cavernoma with a developmental venous anomaly.
Conclusion: Progressive caudate atrophy and globally reduced perfusion.