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.
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.
Authors: Kai Siegfried Lehmann; Bernd Benedikt Frericks; Christoph Holmer; Andrea Schenk; Andreas Weihusen; Verena Knappe; Urte Zurbuchen; Heinz Otto Peitgen; Heinz Johannes Buhr; Jörg Peter Ritz Journal: Int J Colorectal Dis Date: 2011-03-15 Impact factor: 2.571
Authors: Naoaki Sakata; Pete Hayes; Annie Tan; Nathaniel K Chan; John Mace; Ricardo Peverini; Lawrence Sowers; William J Pearce; Richard Chinnock; Andre Obenaus; Eba Hathout Journal: Transplantation Date: 2009-03-27 Impact factor: 4.939
Authors: Dong Sun Shin; Min Suk Chung; Jun Won Lee; Jin Seo Park; Jinoh Chung; Seung-Bock Lee; Sang-Ho Lee Journal: J Korean Med Sci Date: 2009-06-12 Impact factor: 2.153
Authors: Robert Henker; Michael Scholz; Simone Gaffling; Nagayoshi Asano; Ulrike Hampel; Fabian Garreis; Joachim Hornegger; Friedrich Paulsen Journal: PLoS One Date: 2013-09-12 Impact factor: 3.240
Authors: Bruno Christ; Uta Dahmen; Karl-Heinz Herrmann; Matthias König; Jürgen R Reichenbach; Tim Ricken; Jana Schleicher; Lars Ole Schwen; Sebastian Vlaic; Navina Waschinsky Journal: Front Physiol Date: 2017-11-14 Impact factor: 4.566