title: [Value of temporal bone dual phase contrast enhancement computed tomography in diagnosing causes of pulsatile tinnitus].
abstract: OBJECTIVE
  To evaluate the value of temporal bone dual phase contrast enhancement computed tomography (DPCT) in diagnosing the causes of pulsatile tinnitus (PT).
  
  
  METHODS
  We retrospectively analyzed the DPCT findings of 157 patients with unilateral PT. Temporal bone High-resolution CT (HRCT) was performed in 71 patients, magnetic resonance imaging (MRI) in 80 and digital subtraction angiography (DSA) in 89.
  
  
  RESULTS
  In 71 patients with both DPCT and HRCT scan, a total of 68 causes were found. The accuracy of DPCT was 100% it was significant higher than that of HRCT (77.9%). In 80 patients with both DPCT and MRI, 83 causes were known. The accuracy of DPCT (94.0%) was significantly higher than that of MRI (8.4%). In 89 patients with both DPCT and DSA scan, 99 causes were identified. The accuracy of DPCT was 91.9% and it was significantly higher than that of DSA (15.2%).
  
  
  CONCLUSIONS
  DPCT may be an ideal imaging modality for diagnosing the causes of PT.
authors.affiliation: Department of Radiology,Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China.
authors.forename: Zhao-hui
authors.initials: ZH
authors.lastname: Liu
authors.forename: Peng-fei
authors.initials: PF
authors.lastname: Zhao
authors.forename: Guo-peng
authors.initials: GP
authors.lastname: Wang
authors.forename: Jun-fang
authors.initials: JF
authors.lastname: Xian
authors.forename: Xi-Hong
authors.initials: XH
authors.lastname: Liang
authors.forename: Hong
authors.initials: H
authors.lastname: Jiang
authors.forename: Rong
authors.initials: R
authors.lastname: Zeng
authors.forename: Han
authors.initials: H
authors.lastname: Lü
authors.affiliation: Department of Otolaryngology Head & Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China,Email:gongss@ccmu.edu.cn.
authors.forename: Shu-sheng
authors.initials: SS
authors.lastname: Gong
authors.affiliation: Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China. Email: cjr.wzhch@vip.163.com.
authors.forename: Zhen-chang
authors.initials: ZC
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013701:Temporal Bone / Q000000981:diagnostic imaging*; D014012:Tinnitus / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D055815:Young Adult