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Comparison between contrast-enhanced ultrasound and computed tomography angiography in the evaluation of the 78 internal carotid arteries classified as occluded by Doppler ultrasound (without contrast).
| Computed tomography angiography | ||||
| Contrast-enhanced ultrasound | Occlusion | No occlusion | Total | |
| (n) | (n) | |||
| Occlusion (n) | 57 | 2 | 59 | |
| No occlusion (n) | - | 19 | 19 | |
| Total | 57 | 21 | 78 | |
