title: Operator-interactive method for simultaneous measurement of left and right ventricular volumes and ejection fraction by tomographic electrocardiography-gated blood pool radionuclide ventriculography.
abstract: BACKGROUND
  A method that uses single photon emission computed tomography (SPECT) equilibrium radionuclide angiocardiography (ERNA) to measure right ventricular (RV) and left ventricular (LV) volumes (in milliliters) and ejection fraction (EF) is described.
  
  
  RESULTS
  We recorded 35 paired SPECT ERNA and electron beam computed tomography (EBCT) cardiac studies in 27 patients; for comparison with EBCT, a method for measurement of RV and LV volumes and EF with SPECT ERNA was developed in 18 paired studies and was validated and assessed for reproducibility in 17. Validation indicated that SPECT ERNA and EBCT were similar for measurement of RV volume (end-systolic and end-diastolic volumes in a combined analysis) and EF (180+/-74 mL vs 182+/-80 mL and 0.44+/-0.11 vs 0.43+/-0.11, respectively) and for measurement of LV volume and EF (88+/-36 mL vs 84+/-43 mL and 0.53+/-0.081 vs 0.59+/-0.07, respectively). The SPECT ERNA method was quite reproducible.
  
  
  CONCLUSIONS
  RV and LV volumes and EF can be measured readily via SPECT ERNA.
authors.affiliation: Division of Cardiovascular Diseases, Rochester, Mayo Clinic, MN 55905, USA.
authors.forename: Ian P
authors.initials: IP
authors.lastname: Clements
authors.forename: Benjamin
authors.initials: B
authors.lastname: Brinkmann
authors.forename: Brian P
authors.initials: BP
authors.lastname: Mullan
authors.forename: Michael K
authors.initials: MK
authors.lastname: O'Connor
authors.forename: Jerome F
authors.initials: JF
authors.lastname: Breen
authors.forename: Christopher G A
authors.initials: CG
authors.lastname: McGregor
mesh_terms: D000465:Algorithms; D004562:Electrocardiography / Q000379:methods; D015637:Gated Blood-Pool Imaging / Q000379:methods*; D006801:Humans; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013318:Stroke Volume; D015899:Tomography, Emission-Computed, Single-Photon / Q000379:methods; D014584:User-Computer Interface; D018487:Ventricular Dysfunction, Left / Q000000981:diagnostic imaging*; D018497:Ventricular Dysfunction, Right / Q000000981:diagnostic imaging*