Two cases of symptomatic, radiation-induced carotid stenosis diagnosed and followed-up using contrast-enhanced ultrasonography and volume isotropic turbo spin-echo acquisition

Abstract

We used contrast-enhanced ultrasonography (CEUS) and volume isotropic turbo spin-echo acquisition (VISTA) to diagnose two cases of symptomatic, radiation-induced carotid stenosis (RCS). Because the lesions were high-grade, carotid ultrasonography (CUS) were not effective. Case 1: A 73-year-old man was diagnosed with RCS-induced infraction by VISTA after 2 years. Clopidogrel and rosuvastatin were administered. Case 2: An 82-year-old man was diagnosed with RCS-induced transient ischemic attack using CUS, three-dimensional computed tomography and angiography; cilostazol was administered. Follow-up with CUS was not performed, and recurrence was observed 2 years after diagnosis. The lesion was confirmed using CUS and cerebral angiography, and clopidogrel and rosuvastatin were administered. Follow-up using CUS and VISTA were conducted, and no recurrence was observed after 2 years. Two cases were examined using CEUS and VISTA, these are concluded to be useful techniques for diagnose of patients with RCS.