Intraaneurysmal flow: evaluation with Doppler guidewires.
Flow dynamics in cerebral aneurysms were studied with the use of Doppler guidewires in two patients. In both cases it was possible to reach the aneurysmal sac and to assess intraaneurysmal flow. Torquability and flexibility of the new Doppler guidewires permitted continuous assessment of flow velocity and flow pattern at the dome as well as in the neck area. Flow velocities were higher at the neck than within the aneurysmal sac (88 cm/s > 28 cm/s). Because of the limited area of interrogation (sample volume, 5 mm) it was not possible to investigate the complete intraaneurysmal space.
Benndorf
G
G
Department of Radiology, Virchow-Klinikum, Humboldt University, Berlin, Germany.
Wellnhofer
E
E
Lanksch
W
W
Felix
R
R
D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity; D002343:Carotid Artery, Internal / Q000000981:diagnostic imaging; D002560:Cerebrovascular Circulation; D004867:Equipment Design; D005260:Female; D006439:Hemodynamics; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D008297:Male; D014057:Tomography, X-Ray Computed; D018608:Ultrasonography, Doppler / Q000295:instrumentation*; D018084:Ultrasonography, Interventional / Q000295:instrumentation*