Novel three-dimensional imaging technique improves the accuracy of hepatic volumetric assessment

Bernard J. Dubray, Rebecca V. Levy, Parvathi Balachandran, Kendra D. Conzen, Gundumi A. Upadhya, Christopher D. Anderson, William C. Chapman

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Background: With pre-operative prediction of liver volume becoming increasingly important to safely carry out complex hepatic resections, the aim of the present study was to validate the accuracy of a three-dimensional (3-D) liver surgery operative planning software in performing hepatic volumetry. Methods: Between 1999 and 2007, we performed 29 live donor liver resections for transplantation. Eleven patients had pre-operative volumetry performed by radiologists from either computed tomography (CT) or magnetic resonance (MR) imaging with documentation of the corresponding specimen weight. Retrospectively, images were uploaded into Scout™ where 3-D models of each case were generated to perform volumetry. A correlational analysis was performed followed by an accuracy comparison. Results: Estimations by both radiologists and Scout™ were significantly correlated with the specimen weights, P≤ 0.0001. Compared with radiologists' volumetry, Scouta;circcent& significantly improved overall accuracy [per cent error (PE) 20.0% ± 5.3 vs. 32.9% ± 5.7, P= 0.005], accuracy of CT-based estimations (PE 23.2% ± 6.7 vs. 37.2% ± 6.9, P= 0.023) and accuracy of the left lateral section (PE 11.1% ± 3.9 vs. 26.6% ± 6.8, P= 0.027). Discussion: This 3-D planning software is a valid tool for use in volumetry. Significance is greatest for CT-based models of the left lateral section. This approach gives surgeons the ability to assess volumetrics and actively plan resections.

Original languageEnglish
Pages (from-to)670-674
Number of pages5
Issue number9
StatePublished - Sep 2011


  • post-operative dysfunction and ischaemia re-perfusion < liver
  • resection < liver


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