title: Efficacy of multi-slice helical CT venography for the diagnosis of deep venous thrombosis: comparison with venous sonography.
abstract: OBJECTIVE
  The purpose of this study was to assess the efficacy of contrast enhanced multi-slice helical CT (MSCT) venography for the diagnosis of deep venous thrombosis (DVT) in comparison with venous sonography.
  
  
  METHODS
  MSCT was used to obtain contiguous, 5-mm thick axial CT images from the diaphragm to the ankles of 27 patients after intravenous injection of contrast material. These patients were clinically suspected of having DVT. The same patients underwent venous sonography before CT examination. The detectability of DVT with MSCT venography was compared with that with venous sonography.
  
  
  RESULTS
  MSCT venography detected DVT in 21 patients, but venous sonography did so in only 17. MSCT venography detected DVT missed by venous sonography in five patients, while venous sonography detected DVT missed by MSCT venography in one patient.
  
  
  CONCLUSIONS
  MSCT venography can be expected to make a valuable contribution to the diagnosis of DVT and to the prophylaxis of pulmonary embolism.
authors.affiliation: Department of Radiology D1, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita City, Osaka 565-0871, Japan.
authors.forename: Tonsok
authors.initials: T
authors.lastname: Kim
authors.forename: Takamichi
authors.initials: T
authors.lastname: Murakami
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Hori
authors.forename: Seishi
authors.initials: S
authors.lastname: Kumano
authors.forename: Masato
authors.initials: M
authors.lastname: Sakon
authors.forename: Hironobu
authors.initials: H
authors.lastname: Nakamura
mesh_terms: D003287:Contrast Media; D005260:Female; D006801:Humans; D007472:Iohexol; D007866:Leg / Q000098:blood supply; D008297:Male; D008875:Middle Aged; D010690:Phlebography / Q000379:methods; D011655:Pulmonary Embolism / Q000517:prevention & control; D036542:Tomography, Spiral Computed; D014463:Ultrasonography; D020246:Venous Thrombosis / Q000000981:diagnostic imaging*
chemical_list: D003287:Contrast Media; D007472:Iohexol