Subarachnoid hemorrhage | Radiology Reference Article
2024年4月24日 · The sensitivity of non-contrast CT to the presence of subarachnoid blood is strongly influenced by both the amount of blood and the time since the hemorrhage. The diagnosis is suspected when a hyperdense material is seen filling the subarachnoid space.
Subarachnoid hemorrhage (summary) - Radiopaedia.org
2018年4月2日 · CT. first line investigation (fast, available and cheap) acute blood is hyperdense (bright) on CT; blood in the basal cisterns and sulci; in the absence of trauma, think of an aneurysm; a CT angiogram should identify and characterize any aneurysm; MRI. helpful to assess underlying brain parenchyma; MR angiograms are not as good as CT angiograms ...
Subarachnoid haemorrhage | Radiology Reference Article
2024年4月24日 · The sensitivity of non-contrast CT to the presence of subarachnoid blood is strongly influenced by both the amount of blood and the time since the haemorrhage. The diagnosis is suspected when a hyperdense material is seen filling the subarachnoid space.
Intraventricular hemorrhage | Radiology Reference Article
2024年5月9日 · ct Non-contrast CT of the brain is the mainstay of acute evaluation of patients presenting with sudden onset headache or stroke-like symptoms. Blood in the ventricles appears as hyperdense material, heavier than CSF and thus tends to …
Intracranial hemorrhage | Radiology Reference Article
2024年6月20日 · 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).
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Subdural hemorrhage | Radiology Reference Article
2024年11月3日 · Subdural hemorrhage can happen in any age group, is mainly due to head trauma and CT scans are usually sufficient to make the diagnosis. Prognosis varies widely depending on the size and chronicity of the hemorrhage.
Subdural hemorrhage | Radiology Reference Article
Subdural hemorrhage | Radiology Reference Article | Radiopaedia.org
Subarachnoid cisterns - Radiopaedia.org
Subarachnoid cisterns - Radiopaedia.org
Arachnoid cyst | Radiology Reference Article - Radiopaedia.org
2024年6月11日 · CT cisternography (introduction of contrast into the subarachnoid space) demonstrates communication of the cyst with the subarachnoid space. As this communication is slow, the cyst often fills later, and contrast may be seen …
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