International Journal of Surgical Oncology / 2013 / Article / Tab 1

Clinical Study

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

Table 1

Radiologically determined criteria and interobserver kappa.

Radiologically determined criteria Observer 1 N = 12 Observer 2 N = 12 Interobserver kappa

Encasement 0.584
 <180 degrees 2 (17%) 0 (0%)
 180–270 degrees 0 (0%) 4 (33%)
 >270 degrees 10 (83%) 8 (67%)
Obliteration of fat planes 1
 No 0 0
 Yes
12 (100%) 12 (100%)
Deformation of the carotid artery 0.273
 No 4 (33%) 2 (17%)
 Yes 8 (67%) 10 (83%)
Length of contact carotid artery 0.488
 Mean in cm 3.5 (range: 1.0–5.0; SD 1.3)3.6 (range: 1.6–6.1; SD 1.6)

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