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A coordinate positioning puncture method under robot-assisted CT-guidance: phantom and animal experiments
Weifan Zhang1, Peng Xia1, Shijie Liu2
1Department of Surgical Oncology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, PR China.
Summary
Robot-assisted computed tomography (CT)-guided puncture is as accurate as manual methods. This robotic approach reduces CT scanning times and lowers radiation exposure for patients undergoing procedures.
Area of Science:
- Medical imaging and interventional radiology
- Robotics in medicine
- Minimally invasive procedures
Background:
- Computed tomography (CT)-guided percutaneous puncture is a common minimally invasive procedure.
- Accuracy and efficiency are key concerns in CT-guided interventions.
- Robot-assisted systems offer potential advantages in precision and safety.
Purpose of the Study:
- To evaluate the accuracy and efficacy of a robot-assisted CT-guided coordinate positioning puncture method.
- To compare the robotic method against traditional manual CT-guided puncture.
Main Methods:
- Phantom experiments were conducted to assess initial accuracy.
- Animal experiments involved 18 punctures in rabbit livers (9 robotic, 9 manual).
- Key metrics compared included needle-tract length, angle deviation, puncture accuracy, CT scan count, and radiation dose.
Main Results:
- Phantom experiments showed a mean accuracy of 2.67 mm.
- Animal experiments revealed no significant differences in needle-tract length, angle deviation, or puncture accuracy between robotic and manual groups.
- Robot-assisted procedures required fewer CT scans (2.44 vs. 3.33) and resulted in lower radiation exposure (772.98 vs. 1077.89 mGy/cm).
Conclusions:
- Robot-assisted CT-guided coordinate positioning puncture achieves accuracy comparable to manual methods.
- The robotic approach offers significant benefits by reducing the number of CT scans and radiation dosage.
- This technology presents a promising alternative for improving CT-guided interventions.