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Updated: Aug 27, 2026
A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
B-mode ultrasonographic investigations of morphological changes in endarterectomized carotid artery
1Department of Neurosurgery, Muikaichi Hospital, 368-4 Muikaichi-cho, Kanoasi-gun, Shimane 699-5513, Japan.
Background:
The aim of this study was to assess morphological changes in the endarterectomized carotid region using B-mode ultrasonography (USG).
Methods:
USG examinations were performed on 54 Japanese patients who underwent carotid endarterectomy (CEA). The endarterectomized regions were periodically investigated and the intima-media thickness (IMT) was measured.
Results:
Postoperative USGs revealed an evident step formation (type I: 20.4%), a gentle slope (type II: 42.6%), or complete smoothness (type III: 37.0%) at the junction of the endarterectomized carotid region and the common carotid artery (CCA). The IMT of the CCA progressively increased from type I to type III. Patients were followed up for an average of 2.7 years. The new intima-media complex (IMC) was confirmed in all cases after 9 months; it was visualized as an isoechoic layer (7%) or a mixture of iso- and hypoechoic layers (93%). Changes in the IMT during the follow-up period were classified into three groups: no change (group I: 23.1%), decrease (group II: 15.4%), and increase (group III: 61.5%).
Conclusions:
USG is useful to clarify the complicated healing processes of the endarterectomized carotid artery.
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