The utility of contrast-enhanced MR-angiography for posterior fossa giant cerebral aneurysm management

The utility of magnetic resonance angiography is sometimes limited in the d iagnostic workup of cerebral aneurysms with low flow and/or partial thrombo sis when weighed against digital subtraction angiography. We present the ca se of a rare superior cerebellar artery giant, partially thrombosed aneurys m in which additional i.v. contrast-enhanced MRA sequences were comparable to digital subtraction angiography. It demonstrated not only the exact spat ial resolution and correct anatomical relation but also the hemodynamics wh ich were confirmed by intraoperative Doppler ultrasound. This report suppor ts the feasibility and utility of i.v. contrast-enhanced MRA for posterior fossa giant cerebral aneurysm management.