title: In vivo validation of intravascular ultrasound length measurements using a motorized transducer pullback system.
abstract: Using sonoreflective endovascular targets of known length (stainless steel tubular slotted stents), we have validated in vivo the accuracy and reproducibility of intravascular ultrasound length measurements using a system incorporating motorized transducer pullback through a stationary imaging sheath. The correlation was r = 0.936, with a measurement error of only +/- 5.2%, minimal intraobserver variability, and variability of sequential measurements of only +/- 4.8%.
authors.affiliation: Intravascular Ultrasound Imaging and Cardiac Catheterization Laboratories, Washington Hospital Center, Washington, DC, USA.
authors.forename: R T
authors.initials: RT
authors.lastname: Fuessl
authors.forename: G S
authors.initials: GS
authors.lastname: Mintz
authors.forename: A D
authors.initials: AD
authors.lastname: Pichard
authors.forename: K M
authors.initials: KM
authors.lastname: Kent
authors.forename: L F
authors.initials: LF
authors.lastname: Satler
authors.forename: J J
authors.initials: JJ
authors.lastname: Popma
authors.forename: M B
authors.initials: MB
authors.lastname: Leon
mesh_terms: D000368:Aged; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D015607:Stents; D014159:Transducers; D018084:Ultrasonography, Interventional / Q000295:instrumentation