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Proceedings Paper

Comparison of tablet-based strategies for incision planning in laser microsurgery
Author(s): Andreas Schoob; Stefan Lekon; Dennis Kundrat; Lüder A. Kahrs; Leonardo S. Mattos; Tobias Ortmaier
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Paper Abstract

Recent research has revealed that incision planning in laser surgery deploying stylus and tablet outperforms state-of-the-art micro-manipulator-based laser control. Providing more detailed quantitation regarding that approach, a comparative study of six tablet-based strategies for laser path planning is presented. Reference strategy is defined by monoscopic visualization and continuous path drawing on a graphics tablet. Further concepts deploying stereoscopic or a synthesized laser view, point-based path definition, real-time teleoperation or a pen display are compared with the reference scenario. Volunteers were asked to redraw and ablate stamped lines on a sample. Performance is assessed by measuring planning accuracy, completion time and ease of use. Results demonstrate that significant differences exist between proposed concepts. The reference strategy provides more accurate incision planning than the stereo or laser view scenario. Real-time teleoperation performs best with respect to completion time without indicating any significant deviation in accuracy and usability. Point-based planning as well as the pen display provide most accurate planning and increased ease of use compared to the reference strategy. As a result, combining the pen display approach with point-based planning has potential to become a powerful strategy because of benefiting from improved hand-eye-coordination on the one hand and from a simple but accurate technique for path definition on the other hand. These findings as well as the overall usability scale indicating high acceptance and consistence of proposed strategies motivate further advanced tablet-based planning in laser microsurgery.

Paper Details

Date Published: 18 March 2015
PDF: 7 pages
Proc. SPIE 9415, Medical Imaging 2015: Image-Guided Procedures, Robotic Interventions, and Modeling, 94150J (18 March 2015); doi: 10.1117/12.2081032
Show Author Affiliations
Andreas Schoob, Leibniz Univ. Hannover (Germany)
Stefan Lekon, Leibniz Univ. Hannover (Germany)
Dennis Kundrat, Leibniz Univ. Hannover (Germany)
Lüder A. Kahrs, Leibniz Univ. Hannover (Germany)
Leonardo S. Mattos, Istituto Italiano di Tecnologia (Italy)
Tobias Ortmaier, Leibniz Univ. Hannover (Germany)

Published in SPIE Proceedings Vol. 9415:
Medical Imaging 2015: Image-Guided Procedures, Robotic Interventions, and Modeling
Robert J. Webster III; Ziv R. Yaniv, Editor(s)

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