title: Proximal thoracic aortic diameters: transesophageal-echocardiography- versus computed-tomography-derived measurements.
abstract: OBJECTIVE
  The purpose of the study was to compare proximal aortic measurements from electrocardiogram-gated computed tomography (CT) to transesophageal echocardiography (TEE) and to evaluate differences in cusp-cusp and cusp-commissure CT measurements of sinus of Valsalva (SOV).
  
  
  METHODS
  This retrospective study (n=25) compared aortic diameters from CT using manual double-oblique multiplanar reformats (MPRs) and semiautomatic centerline method to TEE.
  
  
  RESULTS
  CT MPR and centerline measurements were higher than TEE for sinotubular junction and ascending aorta. At SOV, cusp-cusp diameters (MPR and centerline methods) and cusp-commissure measurement (centerline method) were larger than TEE.
  
  
  CONCLUSIONS
  Aortic measurements were larger on CT than TEE. Precise difference depended on location and measurement technique.
authors.affiliation: Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Dr., Ann Arbor, MI 48109. Electronic address: prachia@med.umich.edu.
authors.forename: Prachi P
authors.initials: PP
authors.lastname: Agarwal
authors.affiliation: Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Dr., Ann Arbor, MI 48109.
authors.forename: Peter S
authors.initials: PS
authors.lastname: Liu
authors.affiliation: Department of Internal Medicine (Section of Cardiology), University of Michigan Health System, 1500 E. Medical Center Dr., Ann Arbor, MI 48109.
authors.forename: Peter
authors.initials: P
authors.lastname: Hagan
authors.affiliation: Traverse Heart and Vascular, 1200 Sixth St., Ste. 200, Traverse City, MI.
authors.forename: Anna M
authors.initials: AM
authors.lastname: Booher
authors.affiliation: Michigan Institute for Clinical & Health Research, University of Michigan, 2800 Plymouth Road, Building 400, Ann Arbor, MI 48109-2800.
authors.forename: Kuanwong
authors.initials: K
authors.lastname: Watcharotone
authors.affiliation: Department of Radiology, University of Michigan Health System, 1500 E. Medical Center Dr., Ann Arbor, MI 48109.
authors.forename: Leslie E
authors.initials: LE
authors.lastname: Quint
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001013:Aorta, Thoracic / Q000000981:diagnostic imaging*; D017548:Echocardiography, Transesophageal / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014057:Tomography, X-Ray Computed / Q000379:methods*; D055815:Young Adult
keywords: Aorta; COMPUTED tomography; Diameter; Thoracic; Transesophageal echocardiography