Osmotic demyelination syndrome | Radiology Reference Article ...
2024年7月29日 · CT may demonstrate low attenuation crossing the midline in the lower pons. However, CT assessment of the skull base can be difficult due to beam hardening artifact and, if available, MRI is preferred. MRI. The earliest change is seen on DWI with diffusion restriction in the lower pons. This is seen within 24 hours of the onset of quadriplegia 3 ...
Multiple system atrophy | Radiology Reference Article
2024年5月10日 · Multiple system atrophy (MSA) is a sporadic neurodegenerative disease and synucleinopathy characterized by varying degrees of cerebellar ataxia, autonomic dysfunction, parkinsonism, and corticospinal dysfunction.
Pontine hemorrhage | Radiology Reference Article - Radiopaedia.org
2024年5月16日 · MRI. The appearance of hemorrhage on MRI varies with time and to some degree the size of the hematoma (see aging blood on MRI). In patients who have small volume bleeds and who are thought to possibly have an underlying lesion, MRI may be of use (e.g. identification of a vascular malformation), ideally after resolution of the acute hemorrhage.
CNS capillary telangiectasia | Radiology Reference Article ...
2024年1月15日 · Capillary telangiectasias are mostly located in the brainstem, especially the pons. They are usually solitary, but can sometimes be multiple. They have only become widely recognized in the radiology community following the introduction of MRI, as they are usually not seen on CT and DSA 2-5.
Gliosis | Radiology Reference Article - Radiopaedia.org
2024年1月31日 · MRI. Gliosis appears as an area with increased T2/FLAIR signal, somewhat reduced T1 signal and somewhat facilitated diffusion on ADC.
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Ischemic stroke | Radiology Reference Article - Radiopaedia.org
2024年7月23日 · Aging ischemic strokes can be important in a number of clinical and medicolegal settings. Both CT and MRI can help in determining when a stroke occurred as imaging features evolve in a reasonably predictable fashion. There is substantial heterogeneity in the terminology denoting time from onset.
Midbrain to pons ratio (PSP) | Radiology Reference Article ...
2024年3月5日 · Midbrain to pons ratios as measured on midline sagittal images have been found useful in confirming midbrain atrophy in the setting of progressive supranuclear palsy (PSP).
Brainstem glioma | Radiology Reference Article - Radiopaedia.org
2024年10月8日 · Brainstem glioma is not a formal diagnosis but rather a catch-all term encompassing a heterogeneous group that varies greatly in histology and prognosis. It was useful, along with other terms like diffuse intrinsic pontine glioma, particularly when histology was often not obtained.
Cerebral microhemorrhage | Radiology Reference Article
2024年8月16日 · MRI. Cerebral microhemorrhages are only seen on MRI and are only seen on susceptibility weighted T2* sequences such as gradient-recalled echo (GRE) and susceptibility weighted imaging (SWI) 24. They appear as conspicuous 2-10 mm punctate regions of signal drop out with blooming artifact 24.
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