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The effects of real-time image navigation in operative liver surgery

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International Journal of Computer Assisted Radiology and Surgery Aims and scope Submit manuscript

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Abstract

Purpose

In liver surgery, preoperative planning is usually performed by using CT scans. Ultrasonic probes are frequently used operatively to verify tissue deformations, for example when resecting a liver tumor with an ultrasonic dissector. Avoidance of dissecting vitally important hepatic vessels and the recrudescence of tumors are of crucial importance. The potential benefits of real-time image navigation in operative liver surgery were investigated experimentally.

Methods

Four model tumors with realistic ultrasonic features have been embedded into a bowl filled with candle gel. The aim was to locate these tumors with the ultrasonic probe and to puncture them safely with the ultrasonic dissector. The experiment was performed four times, once completely without navigation and three times with ultrasonic-based navigation but under different preconditions.

Results

Less attempts are needed to puncture a certain tumor with real-time image navigation than without navigation (P<0.02%). The effectiveness of ultrasonic-based navigation varied with the surgical preconditions.

Conclusions

The use of a suitable navigation system improves safety and effectiveness in liver surgery for intraoperative localization of key structures such as tumors. However, resecting hepatic tumors with appropriate safety margin demands for further enhancements concerning the proposed methods.

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Authors and Affiliations

  1. Department of Micro Technology and Medical Device Technology, Technische Universität München, Boltzmannstr. 15, 85748, Garching, München, Germany

    Johannes Schwaiger, Mathias Markert, Nikita Shevchenko & Tim C. Lueth

Authors
  1. Johannes Schwaiger
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  2. Mathias Markert
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  3. Nikita Shevchenko
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  4. Tim C. Lueth
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Corresponding author

Correspondence to Johannes Schwaiger.

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Schwaiger, J., Markert, M., Shevchenko, N. et al. The effects of real-time image navigation in operative liver surgery. Int J CARS 6, 785–796 (2011). https://doi.org/10.1007/s11548-011-0557-5

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  • DOI: https://doi.org/10.1007/s11548-011-0557-5

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