title: Dynamic half-Fourier single-shot turbo spin echo for assessment of deep venous thrombosis: initial observations.
abstract: OBJECTIVE
  The objective of this study was to retrospectively analyze the value of dynamic half-Fourier single-shot turbo spin echo (HASTE) imaging in patients with suspected deep venous thrombosis (DVT).
  
  
  METHODS
  Fifty-five veins in 24 patients were interrogated using a HASTE sequence with the patients relaxed and in various degrees of Valsalva. Veins were analyzed for changes in caliber (+CAL) and signal intensity (+SI) or in their absence (-CAL and -SI, respectively) and compared with the presence of thrombus on gadolinium-enhanced magnetic resonance imaging.
  
  
  RESULTS
  There was no thrombus in veins with the +CAL, +SI pattern (n=40) (P<.01). Five of seven veins (71.4%) with the -CAL, -SI pattern had thrombus (P<.01). A qualitative change in CAL had a sensitivity of 100% and a specificity of 91% for the presence of thrombus. An increase of 1.5 mm in CAL had a sensitivity of 100% and a specificity of 93% for this diagnosis.
  
  
  CONCLUSIONS
  Dynamic HASTE imaging offers a physiological method to evaluate veins for deep venous thrombosis.
authors.affiliation: Department of Radiology, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA. ipedrosa@bidmc.harvard.edu
authors.forename: Ivan
authors.initials: I
authors.lastname: Pedrosa
authors.forename: Long
authors.initials: L
authors.lastname: Ngo
authors.forename: Jesse
authors.initials: J
authors.lastname: Wei
authors.forename: Michael
authors.initials: M
authors.lastname: Schuster
authors.forename: Houman
authors.initials: H
authors.lastname: Mahallati
authors.forename: Martin
authors.initials: M
authors.lastname: Smith
authors.forename: Neil M
authors.initials: NM
authors.lastname: Rofsky
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D017352:Echo-Planar Imaging / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010865:Pilot Projects; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013113:Spin Labels; D020246:Venous Thrombosis / Q000175:diagnosis*
chemical_list: D013113:Spin Labels