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Acta Radiol. 2008 Mar;49(2):190-6. doi: 10.1080/02841850701732940.

Three-dimensional time-of-flight (3D TOF) magnetic resonance angiography (MRA) and contrast-enhanced MRA of intracranial aneurysms treated with platinum coils.

Author information

1
Department of Radiology, Uppsala University Hospital, Uppsala, Sweden. johan.wikstrom@radiol.uu.se

Erratum in

  • Acta Radiol. 2009 Apr;50(3):349.

Abstract

BACKGROUND:

Contrast-enhanced magnetic resonance angiography (CE-MRA) is less prone to flow-related signal intensity loss than three-dimensional time-of-flight (3D TOF) MRA and may therefore be more sensitive for detection of residual patency in platinum coil-treated intracranial aneurysms.

PURPOSE:

To compare MRA and CE-MRA in the follow-up of intracranial aneurysms treated with platinum coils.

MATERIAL AND METHODS:

CE-MRA and 3D TOF MRA (pre- and postcontrast injection) of the intracranial vasculature was performed at 1.5T in 38 patients (47 aneurysms) referred for DSA in the follow-up of coiled intracranial aneurysms.

RESULTS:

DSA showed aneurysm patency in 22/47 investigations. Patent aneurysm components were observed with CE-MRA in 18/22 cases, and with 3D TOF MRA in 21/22 cases. There was no significant difference in patent aneurysm component size between CE-MRA and 3D TOF MRA. In addition, CE-MRA showed six, 3D TOF MRA before contrast injection showed seven, and 3D TOF MRA after contrast injection showed eight cases with patent aneurysm components not observed on DSA.

CONCLUSION:

3D TOF MRA was highly sensitive for detection of patent aneurysm components, and at least as sensitive as CE-MRA. Residual aneurysm patency seems to be better visualized with MRA than with DSA in some cases.

PMID:
18300146
DOI:
10.1080/02841850701732940
[Indexed for MEDLINE]

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