Aims and objectives
Introduction & Purpose
A new CT-compatible robotic system,
MAXIOTM was developed by Perfint Healthcare,
USA to assist tumour targeting in biopsy and interventional procedures.
This study aimed to evaluate the accuracy of the robotic system in
Methods and materials
with aluminum seeds (1 x 1 mm) implanted at 30,
70 and 90 mm depth,
was used as a phantom.
The implanted seeds were identified and targeted in the treatment plan.
The orbital angulations of the needle insertion were varied at 0o,
-45o and -60o,
whereas the cranio-caudal angulations were varied at 0o,
-30o and -45o.
After needle insertion,
CT check scans were done to determine the deviation in X,
Y and Z axis of the needle...
120 needle trajectories were assessed using 4 watermelons.
The depth of target did not show significant difference in affecting accuracy of tumour targeting.
The orbital & cc angulation alone did not affect the accuracy.
The highest deviation of needle tip from the target was 2±1 mm,
occurred more frequently in the combination of orbital & cc angulations,
Higher accuracy was noted with the robot docked at the right compared to the left side of the scanner.
The MAXIOTM robotic system achieved high accuracy of ±2 mm in tumour targeting.
It showed great potential to improve accuracy and minimize radiation exposure during CT-guided biopsy or interventional procedures.
Basri JJ Abdullah
Chai Hong Yeong
Kwan Hoong Ng
Department of Biomedical Imaging and University of Malaya Research Imaging Centre,
Faculty of Medicine,
University of Malaya,
50603 Kuala Lumpur,
(2010) Prospects in percutaneous ablative targeting: comparison of a computer-assisted navigation system and the AcuBot Robotic System.
Jones BA and Webster RJ,
3rd (2010) A Geometrically Exact Model for Externally Loaded Concentric-Tube Continuum Robots.
IEEE Trans Robot,
Kronreif G and Stoianovici D (2006) Interventional robotic systems: applications and technology state-of-the-art.
Minim Invasive Ther Allied Technol,