Paper Info
Title
Visualization tool for improved accuracy in needle placement during percutaneous radio-frequency ablation of liver tumors
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.
Year
DOI
Venue
2008
10.1117/12.769399
PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE)
Keywords
Field
DocType
visualization,technology assessment,intra-operative Imaging,image-guided therapy,abdominal procedure
Workload,Visualization,Simulation,Ablation,Augmented reality,Radiofrequency ablation,Image-Guided Therapy,Percutaneous,Medicine,Trajectory
Conference
Volume
ISSN
Citations 
6918
0277-786X
7
PageRank 
References 
Authors
0.56
1
6
Name
Order
Citations
PageRank
thomas studeli170.56
denis kalkofen270.56
Petter Risholm310910.71
Wajid Ali4212.72
a freudenthal570.56
Eigil Samset613316.57