title: Ultrasonography in the quantification of arterial involvement in Takayasu's arteritis.
abstract: OBJECTIVE
  To evaluate the accuracy of ultrasonography (US) in the detection and quantification of arterial involvement in Takayasu's arteritis (TA).
  
  
  METHODS
  The common carotid and subclavian arteries, and the abdominal aorta of 15 patients with TA were studied by Color Doppler (CD) US and Doppler spectral analysis and compared with angiography.
  
  
  RESULTS
  The mean difference (+/-SD) between the percent luminal stenoses measured at angiography and by CD US was 2.0+/-10.3% for the common carotid artery, 4.0+/-23.6% for the subclavian artery and -1.3+/-16.8% for the abdominal aorta. The differences were not statistically significant. However, the agreement of the methods was less than satisfactory as shown by the wide standard deviations.
  
  
  CONCLUSIONS
  More efforts are needed to improve the less than optimal agreement of US with angiography regarding the severity of individual stenoses. The technique performs best in the study of carotid arteries.
authors.affiliation: Department of Diagnostic Radiology, Helsinki University Central Hospital, Finland. reino.raninen@epshp.fi
authors.forename: R O
authors.initials: RO
authors.lastname: Raninen
authors.forename: M M
authors.initials: MM
authors.lastname: Kupari
authors.forename: M S
authors.initials: MS
authors.lastname: Pamilo
authors.forename: M J
authors.initials: MJ
authors.lastname: Taavitsainen
authors.forename: V P
authors.initials: VP
authors.lastname: Poutanen
authors.forename: R I
authors.initials: RI
authors.lastname: Pajari
authors.forename: M
authors.initials: M
authors.lastname: Leirisalo-Repo
authors.forename: P E
authors.initials: PE
authors.lastname: Hekali
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D001012:Aorta, Abdominal / Q000000981:diagnostic imaging / Q000473:pathology; D017536:Carotid Artery, Common / Q000000981:diagnostic imaging / Q000473:pathology; D016893:Carotid Stenosis / Q000000981:diagnostic imaging / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D013348:Subclavian Artery / Q000000981:diagnostic imaging / Q000473:pathology; D013625:Takayasu Arteritis / Q000000981:diagnostic imaging* / Q000473:pathology; D018615:Ultrasonography, Doppler, Color / Q000592:standards*