Immediate evaluation of angioplasty and stenting results in supra-aortic arteries by use of a Doppler-tipped guidewire.
Intra-arterial Doppler sonography may complement arteriography by providing immediate physiological evidence of hemodynamic adequacy and by obviating unnecessary angioplastic dilation. We used a Doppler-tipped guidewire in 16 patients and obtained velocity measurements at the site of stenosis immediately before and after carotid artery stenting (CAS) in 10 patients. Intra-arterial Doppler sonography confirmed hemodynamic improvement immediately after stent placement and correlated well with post-CAS duplex Doppler sonography results. Thus, intra-arterial Doppler sonography can be feasibly incorporated into CAS procedures for hemodynamic evaluation and can provide anatomic information that complements information provided by angiography.
Montreal Neurological Hospital, Montreal, Quebec, Canada.
Nina
N
Ghosh
Donatella
D
Tampieri
Denis
D
Melancon
D000328:Adult; D000368:Aged; D000792:Angiography; D000800:Angioplasty, Balloon / Q000295:instrumentation*; D001783:Blood Flow Velocity / Q000502:physiology; D016893:Carotid Stenosis / Q000000981:diagnostic imaging* / Q000628:therapy*; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D005583:Fourier Analysis; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008875:Middle Aged; D012815:Signal Processing, Computer-Assisted; D015607:Stents; D014159:Transducers; D016896:Treatment Outcome; D018608:Ultrasonography, Doppler / Q000295:instrumentation*; D018615:Ultrasonography, Doppler, Color; D018616:Ultrasonography, Doppler, Duplex; D018084:Ultrasonography, Interventional / Q000295:instrumentation*