Intrakranielle Blutung
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Intracranial hemorrhage (ICH) is a collective term encompassing many different conditions characterized by the extravascular accumulation of blood within different intracranial spaces. A simple categorization is based on location:
- intra-axial hemorrhage
- extra-axial hemorrhage
Alternatively, intracranial hemorrhage can be thought of in terms of the underlying cause, although in most cases the same etiology can result in multiple different patterns of hemorrhage.
- trauma
- vascular malformation(s)
- tumor related hemorrhage
- hypertension: hypertensive hemorrhage
- cerebral amyloid angiopathy (CAA)
- cerebral venous thrombosis
Radiographic features
CT
CT scan is almost always the first imaging modality used to assess patients with suspected intracranial hemorrhage. Fortunately, acute blood is markedly hyperdense compared to brain parenchyma, and as such usually poses little difficulty in diagnosis (provided the amount of blood is large enough, and the scan is performed early).
CT angiography (CTA) is increasingly used to assess for a vascular underlying cause, particularly in cases of subarachnoid hemorrhage, or intraparenchymal hemorrhage where something in the presentation, demographics of the patient, or location/appearance of bleed make a primary hemorrhage less likely.
Similarly, CT venogram (CTV) can be used to reliably assess for patency of the dural venous sinuses.
MRI
MRI is typically requested when an underlying abnormality is being sought, particularly when an underlying tumor is suspected. MRI of hemorrhage can pose some challenges in that the appearance of blood changes depending on the sequence and the time since the hemorrhage and the size and location of the bleed.
Angiography
Cerebral angiography is usually performed when a vascular abnormality is suspected and the CT/MR angiogram is either normal (and index of suspicion is high) or equivocal, or in cases where further delineation or treatment of an identified abnormality is required.
Siehe auch:
- Arteriovenöse Malformation
- Zerebrale Amyloidangiopathie
- Intrazerebrale Blutung
- Subarachnoidalblutung
- epidurales Hämatom
- Unterscheidung epidurales Hämatom subdurales Hämatom
- subdurales Hämatom
- durale AV-Fistel
- Ponsblutung
- Altersbestimmung Blutung MRT
- intraventrikuläre Blutung
- Einblutung in die Basalganglien
- Lobärblutung
- Kleinhirnblutung
- Duret Blutungen
- sakkuläre zerebrale Aneurysmata
- intracranial hemorrhage evaluation with mri
- zerebrale Venenthrombose
- zerebrale Kontusionsblutung
und weiter:
- Einklemmung
- acquired intracranial herniation
- Coup-Contre-coup-Mechanismus
- Hämophilie
- lacunar stroke syndrome
- fetal intracranial haemorrhage
- intracranial haemorrhage with fluid-fluid level
- Thrombozytopenie-Radiusaplasie-Syndrom
- Einteilung Hirnblutung
- moya moya with haemorrhage
- Kontroll CT nach Blutung
- primäre intraventrikuläre Blutung
- Hämosiderinablagerungen nach intrazerebraler Blutung
- swirl sign of intracranial haemorrhage
- Blutung bei intrakranieller AV-Malformation
- Hämorrhagien nach Schlangenbiss
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