title: Dual source CT angiography in popliteal artery entrapment syndrome.
abstract: OBJECTIVE
  To evaluate the clinical value of dual source computed tomography (DSCT) angiography in the diagnosis and treatment for popliteal artery entrapment syndrome (PAES).
  
  
  METHODS
  8 patients with PAES were retrospectively reviewed. 64-slice dual source CT angiography was performed based on the following protocol: 100 mL of Iopamidol (370 mgI/mL) was injected at a rate of 3.5 mL/s and arterial phase images were obtained by using bolus tracking. Axial DSCT images and reconstructed images including multi-planar reconstruction (MPR), maximum intensity projection (MIP), volume rendering (VR) were collected and analysed. All patients underwent Doppler colour ultrasound examinations and surgeries.
  
  
  RESULTS
  The popliteal artery and the neighbouring muscular structures were clearly shown on the axial images revealing the cause of the arterial entrapment. Furthermore, the site and length of the segmental occlusion and collateral developments were well demonstrated on reconstructed images. Characterisation and classification based on DSCT angiography were confirmed by surgeries. PAES was accurately diagnosed by DSCT angiography in all enrolled patients. In contrary, only 5 PAES cases were accurately diagnosed by ultrasound examination.
  
  
  CONCLUSIONS
  DSCT angiography is a noninvasive and valuable tool in the diagnosis of PAES and plays an important role in the determination of treatment plans.
authors.affiliation: Department of Radiology, Beijing Shijitan Hospital affiliated to Capital University of Medical Sciences, Beijing, China.
authors.forename: Xiaoli
authors.initials: X
authors.lastname: Sun
authors.forename: Cheng
authors.initials: C
authors.lastname: Liu
authors.forename: Rengui
authors.initials: R
authors.lastname: Wang
authors.forename: Dailun
authors.initials: D
authors.lastname: Hou
authors.forename: JiuHong
authors.initials: J
authors.lastname: Chen
mesh_terms: D000293:Adolescent; D000328:Adult; D000792:Angiography / Q000379:methods*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D007511:Ischemia / Q000000981:diagnostic imaging*; D007866:Leg / Q000098:blood supply* / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery / Q000000981:diagnostic imaging*; D015900:Radiography, Dual-Energy Scanned Projection / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013577:Syndrome; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult