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  • Electronic Resource  (2)
  • Cerebral blood volume  (1)
  • Computed tomography  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Accuracy of high resolution computed tomography in direct diagnosis of cerebral aneurysms (1987)
    Springer
    Neuroradiology 29 (1987), S. 152-159 
    Details
    ISSN: 1432-1920
    Keywords: Cerebral aneurysms ; Computed tomography ; Cerebral angiography ; Subarachnoid hemorrhage
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary With high resolution computed tomography (CT) of the skull, performing rapid series of 1.5 mm slices during an intravenous bolus injection of contrast medium, an angiography-like image (angio-CT) of the basal cerebral arteries can be obtained. From 76 consecutive angiographically or autopsy-verified cerebral aneurysms of vaious size down to 3 mm in diameter, 74 (97.4%) were shown up by the angio-CT. One ruptured and one incidental aneurysm escaped CT visualization. Besides the correct localization of the aneurysms, angio-CT provides information concerning the size and main direction of the aneurysms and yields, in addition, a coronal view of the aneurysms and their surrounding structures. Pitfalls for mis-diagnosis can be the following: Aneurysms of below 5 mm in diameter, located at the supraclinoid part of the carotid artery, multiple or non-ruptured aneurysms, bony or movement artefacts, poorly contrasted vessels due to wrong injection technique of contrast medium or vasospasm, and incorrect interpretation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00327540
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    MRI assessment of cerebral blood volume in patients with brain infarcts (1998)
    Springer
    Neuroradiology 40 (1998), S. 496-502 
    Details
    ISSN: 1432-1920
    Keywords: Key words Magnetic resonance imaging ; Perfusion studies ; Dynamic contrast-enhanced imaging ; Cerebral blood volume ; Brain infarcts
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract MRI perfusion studies have focussed mainly on acute ischaemia and characterisation in ischaemia. Our purpose was to analyse regional brain haemodynamic information in acute, subacute, and chronic ischaemia. We performed 16 examinations of 11 patients on a 1.5 T MR images. Conventional and dynamic contrast-enhanced imaging were employed in all examinations. For the dynamic susceptibility sequences, a bolus (0.2 mmol/kg) of gadopentetate dimeglumine was injected. Reconstructed regional relative cerebral blood volume (rCBV) maps, bolus maps, and conventional images were analysed by consensus reading. In all examinations decreases in rCBV were observed in the lesions. The distribution of regional rCBV in lesions was heterogeneous. The rCBV of the periphery of the lesions was higher than that at their center. There was a correlation between the time since onset and abnormalities on the rCBV map and T2-weighted images (T2WI). In the early stage of acute stroke, the abnormalities tended to be larger on the rCBV than on T2WI. Many patterns of bolus passage were observed in ischaemic regions. rCBV maps provide additional haemodynamic information in patients with brain infarcts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002340050632
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
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