Authors: Prakash Muthusami Chandrasekharan Kesavadas P N Sylaja Bejoy Thomas K J Harsha T R Kapilamoorthy
Publish Date: 2013/04/12
Volume: 55, Issue: 7, Pages: 861-867
Abstract
This case–control analysis included 35 patients with 37 affected carotid arteries CT angiograms of these patients were analyzed by two raters blinded to clinical and radiological diagnosis Parameters assessed were styloid process length its proximity to the cervical internal carotid artery and its medial and anterior angulations The same parameters were assessed in 70 CT angiograms in age and sex matched controlsInterrater correlations were 087 040 071 and 079 for styloid process length contact distance medial angulation and anterior angulation respectively The mean styloid process length on the affected side was significantly more than on the contralateral side 378 vs 346 mm p = 0006 There were also significant length and contact distance differences between the styloid processes ipsilateral to dissection and ipsilateral styloid processes of controls 389 vs 362 mm p = 005 and 31 vs 50 mm p = 005 respectively There were increasing odds ratios OR for dissection with increasing styloid process length with OR of 436 95 CI = 104 to 184 p = 004 for length more than 50 mm ORs for dissection increased with decreasing contact distance with OR for distances less than 5 mm being 758 95 CI = 093 to 621 p = 006 There was no significant association of CCAD with angulation of the styloid process
Keywords: