Fig 1.
A 60-year-old male patient with right ICA occlusion underwent CEA.
(A) Before CEA, two-dimensional ultrasonography image showing that the right ICA was filled with a hypoechoic lesion. For the original occlusion, the distal diameter was 2.1mm and the length of occlusion in the ultrasonic visual range was 45.7mm. (B) Color Doppler image showing no flow in the right ICA before CEA. (C) Two-dimensional ultrasonography image showing that the right ICA was reopened after CEA. The proximal diameter was 5.4mm. (D) Color Doppler image showing the blood flow filled in the right ICA after CEA. (E) The plaque and clot. (F) After CEA, the spectral wave form showing the peak systolic velocity of right ICA was 169cm/s, and the end diastolic velocity was 55.5cm/s. (G) Before CEA, DSA image showing occlusion of the right ICA and blood retrograde flow into the cavernous portion of the ICA. The occlusion length was 124.68mm. (H) After CEA, DSA image showing the right ICA was repatency.
Table 1.
Patients’ characteristics.
Table 2.
Preoperative sonographic features in the two subgroups of CCAO and ICAO patients.