title: Measurement of a cross-sectional area of normal and stenotic arteries with videodensitometric quantitative arteriography and intravascular ultrasound.
abstract: OBJECTIVE
  A videodensitometric technique that allows measurement of absolute cross-sectional area of any complex lesion was compared with an intravascular ultrasound (US) technique.
  
  
  METHODS
  Stenotic devices (10-15 mm long) with cross sections of different shapes were placed in the distal aortas of five anesthetized pigs (weight, 40-50 kg). The stenotic devices were imaged by using an intravascular US probe after power injection of contrast material.
  
  
  RESULTS
  A comparison of actual areas and measured cross-sectional areas of the stenotic devices showed that videodensitometry and intravascular US produced better results than edge-detection techniques for both unsubtracted and temporal subtraction images.
  
  
  CONCLUSIONS
  These data suggest that the videodensitometric technique can be used to measure absolute cross-sectional areas of arteries with different shapes.
authors.affiliation: Department of Radiological Sciences, University of California, Irvine 92717, USA.
authors.forename: S
authors.initials: S
authors.lastname: Molloi
authors.forename: W
authors.initials: W
authors.lastname: Zhang
authors.forename: C
authors.initials: C
authors.lastname: Leung
authors.forename: T
authors.initials: T
authors.lastname: Hiro
authors.forename: J
authors.initials: J
authors.lastname: Hicks
mesh_terms: D015502:Absorptiometry, Photon; D000792:Angiography; D000818:Animals; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging / Q000473:pathology; D001158:Arteries / Q000000981:diagnostic imaging* / Q000473:pathology; D003251:Constriction, Pathologic; D017023:Coronary Angiography; D003331:Coronary Vessels / Q000000981:diagnostic imaging / Q000473:pathology; D019047:Phantoms, Imaging; D013552:Swine; D018084:Ultrasonography, Interventional; D014741:Video Recording