title: Clinical application and technique of 64-slice spiral CT subtraction angiography in head and neck.
abstract: BACKGROUND
  To discuss the technique of 64-slice spiral CT subtraction angiography (64-SCTSA) in head and neck, and evaluate its clinical application.
  
  
  METHODS
  84 patients suspected of head-neck vascular diseases were examined with 64-SCTSA. The examination techniques, image quality and clinical application were retrospectively analyzed, and the diagnoses of 64-SCTSA were compared with those of surgery or DSA.
  
  
  RESULTS
  Eighty-four subjects were successfully examined with 64-SCTSA, whose scanning and imaging parameters are effective. Image quality was excellent in 51 cases (60.7 %), good in 29 (34.5 %) and acceptable in 4 (4.8 %). In the 84 subjects, 79 cases were found abnormal in blood vessel (58 in head and 21 in neck), of which 57 were confirmed by surgical operation or digital subtraction angiography (DSA).
  
  
  CONCLUSIONS
  64-SCTSA is a feasible technique with satisfactory image quality and has the advantages of showing the lesions of vasculature without shelter from bone. It can improve the diagnostic accuracy in head-neck vascular diseases.
authors.affiliation: Department of Radiology, Fujian Medical University, Xiamen, China.
authors.forename: Lie
authors.initials: L
authors.lastname: Yang
authors.forename: Xien
authors.initials: X
authors.lastname: Huang
authors.forename: Shaoyin
authors.initials: S
authors.lastname: Duan
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction; D002340:Carotid Artery Diseases / Q000000981:diagnostic imaging* / Q000601:surgery; D002561:Cerebrovascular Disorders / Q000000981:diagnostic imaging* / Q000601:surgery; D002681:China; D005240:Feasibility Studies; D005260:Female; D006257:Head / Q000098:blood supply*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000098:blood supply*; D011237:Predictive Value of Tests; D011379:Prognosis; D012189:Retrospective Studies; D036542:Tomography, Spiral Computed; D055815:Young Adult