Immediate Evaluation of Angioplasty and Stenting Results in Supra-Aortic Arteries by Use of a Doppler-Tipped Guidewire
Nina Ghosha,
Donatella Tampieria and
Denis Melancona
a From the Montreal Neurological Hospital, Montreal, Quebec, Canada
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FIG 1. Examples of Doppler spectra. Velocities are measured in cm/s.
A, Intra-arterial Doppler-tipped guidewire spectra obtained immediately before the stent placement procedure.
B, Duplex color Doppler sonography spectra obtained 2 hours before stent placement.
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FIG 2. Angiograms of the patient whose spectra are shown in Figure 1.
A, Before angioplasty of >80% stenosis of the right carotid artery.
B, After the procedure, successful angioplasty and stent placement can be seen.
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FIG 3. Examples of Doppler spectra. Velocities are measured in cm/s.
A, Intra-arterial Doppler-tipped guidewire spectra obtained immediately after the stent placement procedure.
B, Duplex color Doppler sonography spectra obtained 2 hours after stent placement.
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FIG 4. Angiograms of the patient whose spectra are shown in Figure 3.
A, Before angioplasty of >80% stenosis of the right carotid artery.
B, After the procedure, successful angioplasty and stent placement can be seen.
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AJNR - American Journal of Neuroradiology