Visualization tool for improved accuracy in needle placement during percutaneous radio-frequency ablation of liver tumors

Thomas Stüdeli, Denis Kalkofen, Petter Risholm, Wajid Ali, Adinda Freudenthal, Eigil Samset

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Citations (Scopus)

Abstract

The European research network "Augmented reality in Surgery" (ARIS*ER) developed a system that supports percutaneous radio frequency ablation of liver tumors. The system provides interventionists, during placement and insertion of the RFA needle, with information from pre-operative CT images and real-time tracking data. A visualization tool has been designed that aims to support (1) exploration of the abdomen, (2) planning of needle trajectory and (3) insertion of the needle in the most efficient way. This work describes a first evaluation of the system, where user performances and feedback of two visualization concepts of the tool - needle view and user view - are compared. After being introduced to the system, ten subjects performed three needle placements with both concepts. Task fulfillment rate, time for completion of task, special incidences, accuracy of needle placement recorded and analyzed. The results show ambiguous results with beneficial and less favorable effects on user performance and workload of both concepts. Effects depend on characteristics of intra-operative tasks as well as on task complexities depending on tumor location. The results give valuable input for the next design steps.

Original languageEnglish
Title of host publicationMedical Imaging 2008
Subtitle of host publicationVisualization, Image-Guided Procedures, and Modeling
EditorsMichael I. Miga, Kevin R. Cleary
PublisherSPIE
ISBN (Print)9780819471024
DOIs
Publication statusPublished - 26 Mar 2008
Externally publishedYes
EventMedical Imaging 2008 - Visualization, Image-Guided Procedures, and Modeling - San Diego, CA, United States
Duration: 17 Feb 200819 Feb 2008

Publication series

NameProgress in Biomedical Optics and Imaging - Proceedings of SPIE
Volume6918
ISSN (Print)1605-7422

Conference

ConferenceMedical Imaging 2008 - Visualization, Image-Guided Procedures, and Modeling
Country/TerritoryUnited States
CitySan Diego, CA
Period17/02/0819/02/08

Keywords

  • Abdominal procedure
  • Image-guided therapy
  • Intra-operative imaging
  • Technology assessment
  • Visualization

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