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Figure 14. Acute high-grade internal carotid artery (ICA) occlusion. Longitudinal color Doppler image through the internal carotid artery demonstrates a “string” sign, with very minimal flow through the ICA.
121 67 f14
Figure 14. Acute high-grade internal carotid artery (ICA) occlusion. Longitudinal color Doppler image through the internal carotid artery demonstrates a “string” sign, with very minimal flow through the ICA.