Value of MR and CT Imaging for Assessment of Internal Carotid Artery Encasement in Head and Neck Squamous Cell Carcinoma

Figure 2

Retrospective analysis of all MR and CT images from 2009 to 2010. CCRT: concomitant chemoradiation therapy, RT: radiotherapy, Cx: chemotherapy, and PDT: photodynamic therapy. This figure shows 1486 MR and CT studies performed in 1007 patients between 2009 and 2010. In 1068 cases no aberrations were found, and in 38 cases there were only benign tumors. In 25 cases encasement (>270 degrees encasement) was present at preoperative assessment. In 13 cases the report was not conclusive, and in 342 cases no encasement was seen. During operation in 2/125 = 1.6% cases, encasement of the internal carotid artery was found.