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Development and Validation of the Partially-automated Needle Direction Assistant (PANDA) for CT-guided Interventions.

Shohei Toyoda1, Arisa Kameda1, Yasushi Fukuoka2

  • 1Diagnostic and Interventional Radiology, Nara Medical University, Japan.

Interventional Radiology (Higashimatsuyama-Shi (Japan)
|September 8, 2025
PubMed
Summary

The new Partially Automated Needle Direction Assistant (PANDA) device accurately guides computed tomography-guided oblique needle punctures. Phantom study results show 100% success rates, regardless of operator experience, enhancing intervention safety.

Keywords:
CT-guided interventionneedle guidanceoblique punctureradiation reductionrobotics

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Area of Science:

  • Medical Devices
  • Interventional Radiology
  • Medical Imaging

Background:

  • Computed tomography (CT)-guided interventions require precise needle placement.
  • Oblique needle punctures present unique challenges for accuracy.
  • Existing methods may lack real-time guidance for optimal angle determination.

Purpose of the Study:

  • To introduce the Partially Automated Needle Direction Assistant (PANDA).
  • To evaluate PANDA's accuracy and usability in CT-guided oblique needle punctures.
  • To present findings from an initial phantom study.

Main Methods:

  • PANDA integrates a 9-axis IMU for real-time angle detection, transmitting data to a tablet.
  • Operators used a visual guideline on the tablet to align the needle.
  • A phantom study involved two operators (1 and 4 years experience) performing punctures into embedded targets.

Main Results:

  • Both operators achieved a 100% success rate in puncturing all target sites.
  • Needle placement accuracy was not affected by target size, puncture direction, or operator experience.
  • Operator A (1 year experience) showed a trend towards higher scores (1.50) than Operator B (4 years experience) (1.17).

Conclusions:

  • PANDA demonstrates high accuracy and usability for CT-guided oblique needle punctures.
  • The device shows potential to improve safety and reduce radiation exposure in interventional procedures.
  • PANDA's effectiveness is independent of operator experience level.