Caption: Sagittal image of the right carotid bulb and ICA
Description: The right carotid bulb and the origin of the ICA appear normal. The mid portion of the ICA shows a String of Beads appearance.
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Caption: Sagittal image of the right ICA- mid portion.
Description: The mid portion of the right ICA shows multifocal areas of luminal narrowing alternating with dilatation -the classical String of Beads sign.
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Caption: Color Doppler image of the right ICA
Description: Color Doppler suggests disturbed flow patterns in the area of luminal narrowing.
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Caption: Spectral waveform analysis of the proximal Rt. ICA
Description: The proximal part of the right ICA shows a normal arterial waveform with normal peak systolic and end diastolic velocities.
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Caption: Spectral waveform analysis of the Rt. ICA-mid part
Description: An abnormal waveform is noted with spectral broadening and elevated peak systolic and end diastolic velocities.
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Caption: Spectral waveform analysis of the distal Rt. ICA
Description: The abnormally elevated velocities still persist in the distal portion of the right ICA.
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Caption: Sagittal image of the left carotid bulb and ICA
Description: The left carotid bulb and the origin of the ICA appear normal. The distal part of the ICA shows a relatively long segment of narrowing.
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Caption: Color Doppler image of the left ICA
Description: The color Doppler image shows the segment of stenosis. A few small outpouchings are also noted in the distal part of the ICA.
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Caption: Spectral waveform analysis of the proximal Lt. ICA
Description: The proximal part of the left ICA shows a normal arterial waveform with normal peak systolic and end diastolic velocities.
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Caption: Spectral waveform analysis of the Lt. ICA-mid part
Description: A normal arterial waveform is recorded.
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Caption: Spectral waveform analysis of the distal Lt. ICA
Description: An abnormal waveform is noted with elevated peak systolic and end diastolic velocities.
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