naa a22 4500 510807372 CHVBK 20180411083424.0 cr unu---uuuuu 180411e20130501xx s 000 0 eng 10.1007/s11548-012-0789-z doi (NATIONALLICENCE)springer-10.1007/s11548-012-0789-z Positioning error evaluation of GPU-based 3D ultrasound surgical navigation system for moving targets by using optical tracking system [Elektronische Daten] [Ikuma Sato, Ryoichi Nakamura] Purpose: A near real-time three-dimensional (3D) ultrasound navigation system has been developed for guiding surgery involving internal organs that move and change shape (e.g., abdominal surgery, fetal surgery). In practical applications, significant errors arise between the actual navigation-image positions depending on the time delay of the system. Therefore, the positioning error of the system relative to the target velocity was evaluated. Methods: We developed a method for evaluating the positioning error of a graphics processing unit-based 3D ultrasound surgical navigation system (with an optical tracking system) for moving targets. The effectiveness of this system was quantitatively evaluated in terms of its image processing runtime, target registration error (TRE), and positioning error for a moving target. The positioning error was evaluated for a phantom (with an optical tracking marker) moving at speeds of 5-25mm/s, and the navigation target was the center point of the phantom. The imaging range of the volume data was set to the maximum angle and range of the ultrasound diagnostic system (update rate: 4Hz). Results: The image processing runtime was 27.43 ± 4.80ms, and the TRE was 1.50 ± 0.28mm. The positioning error was 4.24 ± 0.12mm for a target moving at a speed of 10mm/s and 5.36 ± 0.10mm for one moving at 15mm/s. Conclusion: The effectiveness of an ultrasound navigation system was quantitatively evaluated by using the positioning error for a moving target. This navigation system demonstrated high calculation speed and positioning accuracy for a moving target. Therefore, it is suitable to guide the surgery of abdominal internal organs (e.g., in fetal and abdominal surgeries) that move or change shape during breathing and surgical approaches. CARS, 2012 Surgical navigation nationallicence Image-guided nationallicence Ultrasound nationallicence GPU nationallicence CUDA nationallicence Sato Ikuma Department of Media Architecture, Faculty of System Information Science Engineering, Future University Hakodate, 116-2 Kamedanakano, 041-8655, Hakodate, Hokkaido, Japan aut Nakamura Ryoichi Department of Medical System Engineering, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, 263-8522, Chiba, Japan aut International Journal of Computer Assisted Radiology and Surgery Springer-Verlag 8/3(2013-05-01), 379-393 1861-6410 8:3<379 2013 8 11548 https://doi.org/10.1007/s11548-012-0789-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11548-012-0789-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sato Ikuma Department of Media Architecture, Faculty of System Information Science Engineering, Future University Hakodate, 116-2 Kamedanakano, 041-8655, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Nakamura Ryoichi Department of Medical System Engineering, Graduate School of Engineering, Chiba University, 1-33 Yayoi-cho, Inage-ku, 263-8522, Chiba, Japan aut NATIONALLICENCE 773 0- International Journal of Computer Assisted Radiology and Surgery Springer-Verlag 8/3(2013-05-01), 379-393 1861-6410 8:3<379 2013 8 11548 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer