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Annals of Surgical Oncology
Published in: Annals of Surgical Oncology 7/2008

01-07-2008 | Hepatic and Pancreatic Tumors

Portal Vein Segmentation of a 3D-Planning System for Liver Surgery—In vivo Evaluation in a Porcine Model

Authors: Kai S. Lehmann, MD, Joerg-P. Ritz, MD, Steffi Valdeig, Andrea Schenk, MSc, Christoph Holmer, MD, Heinz-O. Peitgen, PhD, Heinz-J. Buhr, MD, FACS, FRCS, Bernd B. Frericks, MD

Published in: Annals of Surgical Oncology | Issue 7/2008

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Abstract

Background

Computer systems allow the planning of complex liver operations. The segmentation of intrahepatic vessels builds the basis for the calculation of liver segments and resection proposals. For surgical use, it is essential to know the capabilities and limitations of the segmentation. The aim of this study was to determine the sensitivity and precision of the portal vein segmentation of a computer planning system for liver surgery in vivo.

Methods

Segmentations were performed with the software system HepaVision on computed tomography (CT) scan data of domestic pigs. An in situ corrosion cast of the portal vein served as the gold standard. The segmentation results of the portal vein and the corrosion cast were compared with regard to sensitivity, precision, and amount of short-circuit segmentations.

Results

The methodology demonstrated high resolution ex situ. The in vivo sensitivity of the portal vein segmentation was 100% for vessels of more than 5 mm in diameter and 82% for vessels of 3–4 mm. All segment branches were detected as well as 84% of the first subsegment branches with a diameter of more than 3 mm. The precision of the system was 100% for segment branches and 89% for the first subsegment vessels. The amount of internal short-circuit segmentations was less than 3.0%. No external short-circuits were found.

Conclusion

The system has a high precision and sensitivity under clinical conditions. The segmentation is suitable for portal vein branches of the first and second order and for vessels of ≥3 mm in diameter.
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Metadata
Title
Portal Vein Segmentation of a 3D-Planning System for Liver Surgery—In vivo Evaluation in a Porcine Model
Authors
Kai S. Lehmann, MD
Joerg-P. Ritz, MD
Steffi Valdeig
Andrea Schenk, MSc
Christoph Holmer, MD
Heinz-O. Peitgen, PhD
Heinz-J. Buhr, MD, FACS, FRCS
Bernd B. Frericks, MD
Publication date
01-07-2008
Publisher
Springer-Verlag
Published in
Annals of Surgical Oncology / Issue 7/2008
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-008-9934-x

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