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. 2024 Dec 26;20(1):106–112. doi: 10.14797/mdcvj.1465

Figure 1.

1A Preop ultrasound of severe stenosis in proximal ICA. 1B Postop ultrasound shows good stent patency, normal flow velocities & improved pulse waveforms 1C Preop TCDof blunted left MCA pulse waveform confirms proximal stenosis 1D TCD after stenting shows substantial improvement in systolic upstroke in pulse waveform of left MCA

(A) Preoperative carotid Duplex ultrasound revealed severe stenosis in the proximal ICA (PSV of 300 cm/sec, EDV of 113 cm/sec). (B) Postoperative carotid Duplex ultrasound confirmed good stent patency, normal flow velocities (PSV of 107.17 cm/sec, EDV of 29.85 cm/sec) and improved pulse waveforms. (C) Preoperative TCD showed a blunted left MCA pulse waveform, confirming a proximal stenosis. (D) TCD after stenting revealed substantial improvement in the systolic upstroke in the pulse waveform of the left MCA. ICA: internal carotid artery; PSV: peak systolic velocity; EDV: end diastolic velocity; TCD: transcranial Doppler; MCA: middle cerebral artery