Lacunar infarct | Radiology Reference Article - Radiopaedia.org
2024年1月21日 · Lacunar infarcts are small (<15 mm) infarcts in the distal distribution of deep penetrating vessels (lenticulostriate, thalamoperforating, and pontine perforating arteries, recurrent artery of Heubner). They result from occlusion of one of the small penetrating end arteries at the base of the brain and have traditionally been thought to occur ...
Brainstem stroke syndromes | Radiology Reference Article
2024年5月1日 · Brainstem stroke syndromes, also known as crossed brainstem syndromes, refer to a group of syndromes that occur secondary to lesions, most commonly infarcts, of the brainstem.
Ischemic stroke | Radiology Reference Article - Radiopaedia.org
2024年7月23日 · Ischemic stroke is an episode of neurological dysfunction due to focal infarction in the central nervous system attributed to arterial thrombosis, embolization, or critical hypoperfusion. While ischemic stroke is formally defined to include brain, spinal cord , and retinal infarcts 1 , in common usage, it mainly refers to cerebral infarction ...
Cerebellar infarction | Radiology Reference Article - Radiopaedia.org
2024年6月28日 · Cerebellar infarction is a relatively uncommon subtype of ischemic stroke. It may involve any of the three arteries supplying the cerebellum : superior cerebellar artery (SCA): superior cerebellar arterial infarct
Perivascular spaces | Radiology Reference Article - Radiopaedia.org
2024年4月28日 · When perivascular spaces are very numerous the brain can have a colander-like appearance, referred to as état criblé (as opposed to numerous lacunar infarcts, sometimes referred to as état lacunaire). When perivascular spaces are very large, they are referred to as tumefactive perivascular spaces.
Acute pontine infarct | Radiology Case - Radiopaedia.org
A case of a large acute hemi-pontine infarct. A lovely example of the value of diffusion weighted imaging in stroke.
Thalamic infarct | Radiology Reference Article - Radiopaedia.org
2024年5月27日 · Both isolated thalamic (lacunar) strokes and posterior cerebral artery territorial strokes most commonly present involving the ventrolateral territory. In contrast, basilar and vertebrobasilar (extended posterior circulation) strokes most commonly involve the posteromedial territory of the thalamus.
Diffusion-weighted imaging in acute ischemic stroke
2024年2月13日 · Diffusion-weighted imaging (DWI) is a commonly performed MRI sequence for the evaluation of acute ischemic stroke and is very sensitive in the detection of small and early infarcts. Conventional MRI sequences (T1WI, T2WI) may not demonstrate an infarct for 6 hours, and small infarcts may be hard to appreciate on CT for days, especially without ...
Hemorrhagic transformation of ischemic stroke - Radiopaedia.org
2024年7月15日 · Significant hemorrhagic transformation of a cerebral infarct usually manifests in a rapid and often profound deterioration in clinical state. In untreated patients, hemorrhagic transformation rarely occurs in the first 6 hours.
Hypertensive intracerebral hemorrhage | Radiology Reference …
2024年2月12日 · Hypertensive intracerebral hemorrhages are the most common type of intracerebral hemorrhage (ICH) by cause, commonly affecting the basal ganglia, thalamus, pons or cerebellum.