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Proceedings Paper

A method for accelerating bronchoscope tracking based on image registration by using GPU
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Paper Abstract

This paper presents a method for accelerating bronchoscope tracking based on image registration by using the GPU (Graphics Processing Unit). Parallel techniques for efficient utilization of CPU (Central Processing Unit) and GPU in image registration are presented. Recently, a bronchoscope navigation system has been developed for enabling a bronchoscopist to perform safe and efficient examination. In such system, it is indispensable to track the motion of the bronchoscope camera at the tip of the bronchoscope in real time. We have previously developed a method for tracking a bronchoscope by computing image similarities between real and virtual bronchoscopic images. However, since image registration is quite time consuming, it is difficult to track the bronchoscope in real time. This paper presents a method for accelerating the process of image registration by utilizing the GPU of the graphics card and the CUDA (Compute Unified Device Architecture) architexture. In particular, we accelerate two parts: (1) virtual bronchoscopic image generation by volume rendering and (2) image similarity calculation between a real bronchoscopic image and virtual bronchoscopic images. Furthermore, to efficiently use the GPU, we minimize (i) the amount of data transfer between CPU and GPU, and (ii) the number of GPU function calls from the CPU. We applied the proposed method to bronchoscopic videos of 10 patients and their corresponding CT data sets. The experimental results showed that the proposed method can track a bronchoscope at 15 frames per second and 5.17 times faster than the same method only using the CPU.

Paper Details

Date Published: 13 March 2009
PDF: 12 pages
Proc. SPIE 7261, Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling, 726108 (13 March 2009); doi: 10.1117/12.813491
Show Author Affiliations
Takamasa Sugiura, Nagoya Univ. (Japan)
Daisuke Deguchi, Nagoya Univ. (Japan)
Marco Feuerstein, Nagoya Univ. (Japan)
Takayuki Kitasaka, MEXT Innovation Ctr. for Preventive Medical Engineering, Nagoya Univ. (Japan)
Aichi Institute of Technology (Japan)
Yasuhito Suenaga, MEXT Innovation Ctr. for Preventive Medical Engineering, Nagoya Univ. (Japan)
Kensaku Mori, MEXT Innovation Ctr. for Preventive Medical Engineering, Nagoya Univ. (Japan)


Published in SPIE Proceedings Vol. 7261:
Medical Imaging 2009: Visualization, Image-Guided Procedures, and Modeling
Michael I. Miga; Kenneth H. Wong, Editor(s)

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