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.
Ghosh
Nina
N
Montreal Neurological Hospital, Montreal, Quebec, Canada.
Tampieri
Donatella
D
Melancon
Denis
D
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*