title: Correlation Between Liver Volumetric Computed Tomography Results and Measured Liver Weight: A Tool for Preoperative Planning of Liver Transplant.
abstract: OBJECTIVE
  Before liver transplant, it is necessary to know the size of the organ in advance of the procedure. We studied the correlation between liver volumetric computed tomography results and liver weight.
  
  
  METHODS
  Postmortem volumetric computed tomography was conducted on cadavers before autopsy, and 3-dimensional liver volume was estimated with semiautomated software. Liver weight was then determined at autopsy. Linear regression and univariate analysis of variance results were used to determine the accuracy of volumetric 3-dimensional computed tomography in estimating liver weight. We also used 2-dimensional liver sizes to design a 2-dimensional formula to estimate liver volume.
  
  
  RESULTS
  We found that 3-dimensional volumetric computed tomography was able to accurately estimate liver weight (standard error = 157 g) with a liver density of 0.99 g/mL. Intraobserver and interobserver variabilities were small. The 2-dimensional formula estimated liver weight slightly less accurately (standard error = 212 g).
  
  
  CONCLUSIONS
  We conclude that liver weight can be estimated accurately with 3-dimensional volumetric computed tomography; estimates were more precise than with the 2-dimensional formula-based liver volume estimation. Volumetric computed tomography can be an important tool during preoperative workup before transplant surgery.
authors.affiliation: Department of Radiology and Nuclear Medicine, Radboud University Medical Centre, Nijmegen, The Netherlands.
authors.forename: Lianne J P
authors.initials: LJ
authors.lastname: Sonnemans
authors.forename: Jeroen C
authors.initials: JC
authors.lastname: Hol
authors.forename: René
authors.initials: R
authors.lastname: Monshouwer
authors.forename: Mathias
authors.initials: M
authors.lastname: Prokop
authors.forename: Willemijn M
authors.initials: WM
authors.lastname: Klein
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D001331:Automation; D002102:Cadaver; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D016014:Linear Models; D008099:Liver / Q000000981:diagnostic imaging* / Q000473:pathology / Q000601:surgery; D016031:Liver Transplantation; D008297:Male; D008875:Middle Aged; D061330:Multidetector Computed Tomography; D015588:Observer Variation; D009929:Organ Size; D011237:Predictive Value of Tests; D011300:Preoperative Care / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted; D015203:Reproducibility of Results; D012984:Software; D055815:Young Adult