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Thin-section CT of midbrain abnormalities in progressive supranuclear palsy
AJNR. American Journal of Neuroradiology
|September 1, 1985
Summary
Thin-section CT scans reveal significant midbrain and pontine atrophy in progressive supranuclear palsy (PSP) patients. A unique low-density midbrain abnormality, caused by cistern invagination, was observed in several PSP cases.
Area of Science:
- Neurology
- Radiology
- Neuroimaging
Background:
- Progressive supranuclear palsy (PSP) is a rare neurodegenerative disease.
- Accurate diagnosis of PSP can be challenging.
- Imaging plays a crucial role in understanding PSP's neuropathology.
Purpose of the Study:
- To investigate the characteristic imaging findings of progressive supranuclear palsy (PSP) using thin-section computed tomographic (CT) scans.
- To identify specific structural abnormalities in the midbrain and pons associated with PSP.
Main Methods:
- Thin-section CT scans (3 mm and 1.5 mm) were performed on 10 patients with PSP and 31 controls.
- Scanners used included Philips Tomoscan 310 and General Electric 8800 CT/T.
- Metrizamide-enhanced cisternography was used in a subset of PSP patients.
Main Results:
- All PSP patients exhibited marked midbrain and moderate pontine atrophy.
- Dilated third ventricle and enlarged quadrigeminal plate cisterns were common findings in PSP.
- A striking midbrain abnormality, characterized by a low-density area, was noted in six PSP cases, identified as invagination of the interpeduncular cistern into the atrophic midbrain.
Conclusions:
- Thin-section CT imaging reveals distinct patterns of atrophy in PSP, particularly in the midbrain and pons.
- The observed midbrain abnormality represents a specific imaging biomarker for PSP.
- These findings enhance the understanding of PSP's neuroanatomical changes and aid in diagnosis.