Novel three-dimensional imaging technique improves the accuracy of hepatic volumetric assessment
2011; Elsevier BV; Volume: 13; Issue: 9 Linguagem: Inglês
10.1111/j.1477-2574.2011.00350.x
ISSN1477-2574
AutoresBernard J. DuBray, Rebecca V. Levy, Parvathi Balachandran, Kendra D. Conzen, Gundumi A. Upadhya, Christopher D. Anderson, William C. Chapman,
Tópico(s)Liver Disease and Transplantation
ResumoBackgroundWith 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.MethodsBetween 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.ResultsEstimations by both radiologists and Scout™ were significantly correlated with the specimen weights, P≤ 0.0001. Compared with radiologists' volumetry, Scout™ 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).DiscussionThis 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.
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