title: Association between the extent of sigmoid sinus dehiscence and an occurrence of pulsatile tinnitus: a retrospective imaging study.
abstract: OBJECTIVE
  To assess the extent of sigmoid sinus dehiscence (SSD) on high-resolution computed tomography venography (HRCTV) or high-resolution computed tomography (HRCT) images in pulsatile tinnitus (PT) and non-PT groups to determine whether there is an association between the extent of SSD and occurrence of PT.
  
  
  METHODS
  Twenty-eight SSD patients with ipsilateral PT and 28 age- and gender-matched SSD patients without PT who underwent HRCTV or HRCT were enrolled in this study and categorised into two groups: "PT group" and "non-PT group". The extent of SSD in each group was calculated and compared.
  
  
  RESULTS
  The largest transverse diameter and largest vertical diameter of SSD in the PT group were 6.21±1.7 and 6.15±2.19 mm, respectively. The largest transverse diameter and largest vertical diameter of SSD in the non-PT group were 3.06±1.38 and 2.51±1.03 mm, respectively. The extent of SSD was statistically different between the two groups (p<0.001; p<0.001).
  
  
  CONCLUSIONS
  As a cause of PT, SSD can also occur in individuals without PT symptoms. Preliminary findings suggest that there may be a potential correlation between the extent of SSD and an occurrence of PT.
authors.affiliation: Department of Radiology, Capital Medical University, Beijing Friendship Hospital, No. 95, Yong'an Road, Beijing 100000, China; Department of Radiology, The Affiliated Hospital of Qingdao University, No.16, Jiangsu Road, Qingdao 266000, China.
authors.forename: C
authors.initials: C
authors.lastname: Dong
authors.affiliation: Department of Radiology, Capital Medical University, Beijing Friendship Hospital, No. 95, Yong'an Road, Beijing 100000, China.
authors.forename: P
authors.initials: P
authors.lastname: Zhao
authors.affiliation: Department of Radiology, Capital Medical University, Beijing Tongren Hospital, No.1, Dongjiaominxiang Road, Beijing 100000, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Department of Radiology, The Affiliated Hospital of Qingdao University, No.16, Jiangsu Road, Qingdao 266000, China.
authors.forename: W
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Radiology, Capital Medical University, Beijing Friendship Hospital, No. 95, Yong'an Road, Beijing 100000, China.
authors.forename: H
authors.initials: H
authors.lastname: Lv
authors.affiliation: Department of Radiology, Capital Medical University, Beijing Friendship Hospital, No. 95, Yong'an Road, Beijing 100000, China.
authors.forename: S
authors.initials: S
authors.lastname: Pang
authors.affiliation: Department of Radiology, Capital Medical University, Beijing Friendship Hospital, No. 95, Yong'an Road, Beijing 100000, China. Electronic address: wzhch0901@163.com.
authors.forename: Z
authors.initials: Z
authors.lastname: Wang
mesh_terms: D000328:Adult; D002533:Cerebral Angiography / Q000379:methods*; D000072226:Computed Tomography Angiography / Q000379:methods*; D003392:Cranial Sinuses / Q000000981:diagnostic imaging*; D004240:Diverticulum / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D015588:Observer Variation; D010690:Phlebography / Q000379:methods*; D015203:Reproducibility of Results; D012189:Retrospective Studies; D012680:Sensitivity and Specificity; D014012:Tinnitus / Q000000981:diagnostic imaging*