Keywords:
Interventional non-vascular, Computer applications, CT, Percutaneous, Image manipulation / Reconstruction, Ablation procedures, Biopsy, Technology assessment
Authors:
P. Durand, A. Moreau-Gaudry, J. frandon, M. Medici, E. Chipon, C. SENGEL, I. BRICAULT; Grenoble/FR
DOI:
10.1594/ecr2013/B-0429
Conclusion
This prospective randomized controlled trial suggest that the tested navigation system improves the accuracy of CT-guided interventions,
and that the system is usable in a routine clinical setting for a large variety of operators and types of interventions.
We note that the preparation phase (From planning to 1st needle) was longer in the NAV group,
this could be explained by :
- Utilisation of a prototype version
- Many different skilled radiologists used the system,
some of the for the first time,
this also shows that the system was usable for novices.
- The system encouraged radiologists to explore more trajectories,
which may lead to optimized and more secure interventions
The use of the Navigation system allowed to reach the target with less control acquisitions,
this could be explained by :
- Operators feel more accurate and thus progress more quickly to the target.
- Because of the (demonstrated) increased accuracy,
fewer corrections of erroneous trajectories were necessary.
The duration of NAV intervention phase (progression to target) was always <30' where some intervention in the CT group lasted more than one hour.
The outliers are at risk of discomfort and high X-Ray exposure for the patient,
stress for the operator and poor optimization of imaging ressources.
We acknowledge the limitations of this study,
it was monocentric,
inclusions were nor systematic nor consecutive and the tested system was a prototype.