title: [The applied research of digital subtraction technique on head and neck with 64-slice spiral CTA].
abstract: OBJECTIVE
  To explore the imaging value of digital subtraction technique on head and neck with 64-slice spiral CTA.
  
  
  METHODS
  958 patients of head and neck vessels were examined with the direct method, Surestart law, low-dose tes methods, Surestart subtraction method, low-dose test subtraction method by CTA, the former three kinds are non-subtraction method, the latter two kinds are subtraction method, a comparative analysis on the five methods from the image quality, imaging time, imaging values, seek for the CTA method with optimal image quality, the shortest imaging time, the best value.
  
  
  RESULTS
  The image quality with the direct method (2.82 points), Surestart law (3.25 points), low-dose test method (3.33 points), Surestart subtraction method (4.10 points), low-dose test subtraction method (4.18 points), gradually changed well in order, the image quality of subtraction method is better than non-subtraction method; imaging time with direct method (40.26 minutes), Surestart law (35.06 minutes), small dose test method (33.49 minutes), Surestart subtraction method (17.52 minutes), small dose test subtraction method (15.32 minutes), gradually become shorter in order, the imaging time of subtraction method is shorter than the non-subtraction method; Evaluation on the sensitivity of aneurysms and stenosis, subtraction method is more better than the non-subtraction method, the little narrow extent and the smaller aneurysm, the subtraction method is more better than non-subtraction method.
  
  
  CONCLUSIONS
  The digital subtraction method is an ideal head and neck imaging method with 64-slice spiral CTA.
authors.affiliation: Department of Radiology, Jiangmen Central Hospital, Jiangmen 529030. qflcom@126.com
authors.forename: Wei
authors.initials: W
authors.lastname: Li
authors.forename: Wansheng
authors.initials: W
authors.lastname: Long
authors.forename: Yigai
authors.initials: Y
authors.lastname: He
authors.forename: Yong
authors.initials: Y
authors.lastname: Lan
authors.forename: Xuemao
authors.initials: X
authors.lastname: Luo
authors.forename: Jinrong
authors.initials: J
authors.lastname: Li
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction; D002533:Cerebral Angiography / Q000379:methods*; D005260:Female; D006257:Head / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000000981:diagnostic imaging; D036542:Tomography, Spiral Computed / Q000379:methods*; D055815:Young Adult