Preparing the anatomical model for ablation of unresectable liver tumor

Dominik Spinczyk

doi:10.5114/wiitm.2014.43022

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2/2014
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abstract:

Original paper

Preparing the anatomical model for ablation of unresectable liver tumor

Dominik Spinczyk

Videosurgery Miniinv 2014; 9 (2): 246–251

DOI: https://doi.org/10.5114/wiitm.2014.43022

Online publish date: 2014/05/26

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Introduction: Nowadays the best treatment of the primary and secondary hepatic tumor is surgical resection, but only 5–15% of all patient with hepatocellular carcinoma and 20–25% of all patients with liver metastases are indicated for resection. In these cases some kind of ablation and other technique could be used.

Aim: To present the methodology of preparing the anatomical model for ablation of unresectable liver tumor.

Material and methods: The presented method is based on abdomen computed tomography (CT) dynamic examination. Three methods of segmentation are used: rolling vector for liver volume, modified Frangi filter for liver vessels, and fuzzy expert system with initial region-of-interest anisotropic filtration for liver metastases. Segmentation results are the input data for creating 3D anatomical models in the form of B-spline curves and surfaces performing the surface global interpolation algorithm. A graphical user interface for presentation and evaluation of models, presented in color against DICOM images in grayscale, is designed and implemented.

Results: The proposed approach was tested on 20 abdominal CT obtained from the Department of Clinical Radiology of Silesian Medical University. The lack of a “gold standard” provides for the correction of the results.

Conclusions: Preparation of the anatomical model is one of the important early stages of the use of image-based navigation systems. This process could not take place in a fully automatic manner and verification of the results obtained is performed by the radiologist. Using the above anatomical model in surgical workflow is presented.

keywords:

Preparing the anatomical model for ablation of unresectable liver tumor

Dominik Spinczyk

anatomical liver model, liver ablation, abdominal surgery planning