Abstract

Despite the ability of current GPU processors to treat heavy parallel computation tasks, its use for solving medical image segmentation problems is still not fully exploited and remains challenging. A lot of difficulties may arise related to, for example, the different image modalities, noise and artifacts of source images, or the shape and appearance variability of the structures to segment. Motivated by practical problems of image segmentation in the medical field, we present in this paper a GPU framework based on explicit discrete deformable models, implemented over the NVidia CUDA architecture, aimed for the segmentation of volumetric images. The framework supports the segmentation in parallel of different volumetric structures as well as interaction during the segmentation process and real-time visualization of the intermediate results. Promising results in terms of accuracy and speed on a real segmentation experiment have demonstrated the usability of the system.

Highlights

  • Medical image segmentation is nowadays at the core of medical image analysis and supports e.g. computer-aided diagnosis, surgical planning, intra-operative guidance or postoperative assessment

  • Motivated by practical problems of image segmentation in the medical field, we present in this paper a Graphics Processing Units (GPU) framework based on explicit discrete deformable models, implemented over the NVidia Compute Unified Device Architecture (CUDA) architecture, aimed for the segmentation of volumetric images

  • Our GPU segmentation framework was evaluated under real conditions for the segmentation of the hip joint bones, i.e. femur and hip bone, from Magnetic Resonance Imaging (MRI) (Figs. 7(a)–7(d))

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Summary

Introduction

Medical image segmentation is nowadays at the core of medical image analysis and supports e.g. computer-aided diagnosis, surgical planning, intra-operative guidance or postoperative assessment. Segmentation attracts the interest of the Computer Graphics community, by supporting e.g. visualization of medical data sets. The large variety of image modalities with associated artifacts, the variability of the structures to segment and the strong demanded requirements (e.g., high accuracy, automation) seriously hinder the design of efficient segmentation methods. In this context, the use of interactive and fast segmentation approaches can expedite tedious parameter tuning and reduce the limitations of segmentation methods since interactive control is available [22]

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