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Which modality (ies) provides the best possible visualization of the flow pattern and characteristics of any intracranial aneurysm?

Answer choice 1: high-resolution CT angiography
Answer choice 2: digital substraction angiography
Answer choice 3: MRI and MRA
Answer choice 4: high-resolution CT angiography combined with digital subtraction angiography
Answer choice 5: CT angiography combined with MRA
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About diagnostic procedure when SAH is suspected which one is true?

Answer choice 1: CT is usually the initial diagnostic procedure when SAH is suspected.
Answer choice 2: A good-quality nonenhanced CT scan may depict SAH in more than 90% of patients who undergo scanning within 48 hours,
Answer choice 3: The location of the subarachnoid blood identifies the presumed location of the ruptured aneurysm
Answer choice 4: Location of an aneurysm often demonstrated by an area of maximum clot localization or the area of the maximum amount of subarachnoid blood.
Answer choice 5: In patients with diffuse SAH, CT scans may not depict the site of aneurysm rupture
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About SAH which one is not true?

Answer choice 1: CT is not useful in patients with multiple aneurysms
Answer choice 2: In addition to indicating the location of the vascular lesion, a CT scan may show unsuspected anomalies
Answer choice 3: By providing a quantitative measure of the amount of blood in the subarachnoid cisterns and ventricles, the initial CT scan provides a reliable predictive index that may be used to identify patients who are likely to have a vasospasm.
Answer choice 4: the Fisher grading system is used to classify SAH is based on the amount of blood visible on the CT scan
Answer choice 5: In the Grade 1 Fisher grading system, no subarachnoid blood detected in CT scan
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About Cerebral angiography in a patient with SAH all of these are true except:

Answer choice 1: Angiography may used to detect and evaluate aneurysmal multiplicity or other associated vascular diseases
Answer choice 2: Angiography may used to identify congenital anomalies, and diagnose cerebral vasospasm and aid in their treatment
Answer choice 3: Multiple views are often necessary to delineate the origin of vessels overlapping the aneurysms
Answer choice 4: Multiple views are often necessary necessary to the configuration of the aneurysm neck.
Answer choice 5: Carotid ophthalmic aneurysms are often best seen on the AP projection
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In a patient with SAH which finding(s) may affect the patient s treatment?

Answer choice 1: Presence of multiple intracranial aneurysms
Answer choice 2: Areas of intracranial arterial stenoses
Answer choice 3: Associated arteriovenous malformations
Answer choice 4: Fetal origin of a posterior cerebral artery
Answer choice 5: Persistent primitive trigeminal artery
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History

A 43 Y/O man with severe headache
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