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Related Experiment Videos

Robotically Driven CT-guided Needle Insertion: Preliminary Results in Phantom and Animal Experiments.

Takao Hiraki1, Tetsushi Kamegawa1, Takayuki Matsuno1

  • 1From the Department of Radiology (T.H., T. Komaki, Y. Masaoka, Y. Matsui, H.F., T.I., S.K.) and Graduate School of Health Sciences (R.M.), Okayama University Medical School, 2-5-1 Shikatacho, Kitaku, Okayama 700-8558, Japan; Graduate School of Natural Science and Technology (T. Kamegawa, T. Matsuno) and Organization for Research Promotion & Collaboration (Y.K.), Okayama University, Okayama, Japan; Collaborative Research Center for OMIC, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama, Japan (T.S.); Center for Innovative Clinical Medicine (J.S., T. Mitsuhashi), Division of Radiology, Medical Technology Department (T.Y.), and Division of Medical Informatics (H.G.), Okayama University Hospital, Okayama, Japan.

Radiology
|June 13, 2017
PubMed
Summary

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This summary is machine-generated.

Remote-controlled robotic computed tomography (CT)-guided needle insertion matches manual accuracy in phantoms. This robotic approach eliminates physician radiation exposure and proves accurate in animal studies.

Area of Science:

  • Medical Imaging
  • Robotics in Medicine
  • Interventional Radiology

Background:

  • Computed tomography (CT)-guided needle insertion is crucial for biopsies and interventions.
  • Manual needle insertion carries risks of radiation exposure to physicians.
  • Advancements in robotic technology offer potential for improved precision and safety in medical procedures.

Purpose of the Study:

  • To assess the accuracy of remote-controlled robotic CT-guided needle insertion compared to manual insertion.
  • To evaluate the feasibility, safety, and accuracy of robotic needle insertion in animal models.
  • To quantify radiation exposure to physicians during robotic versus manual procedures.

Main Methods:

  • Phantom experiments involved 19-gauge needle insertions (robotic vs. manual) under CT fluoroscopic guidance.

Related Experiment Videos

  • Accuracy, insertion time, CT fluoroscopy time, and radiation exposure were compared using Student's t-test.
  • Animal experiments in swine targeted organs (liver, kidneys, lungs, muscle) using robotic insertion with CT guidance.

    • Main Results:

    • Phantom robotic and manual insertions showed equivalent accuracy (1.6 mm vs. 1.4 mm; 95% CI: -0.3 to 0.6 mm).
    • No significant differences in insertion time or CT fluoroscopy time were observed between methods.
    • Physician effective dose was 0 μSv for robotic insertion versus 5.7 μSv for manual insertion (P < .001).
    • Robotic insertion in animals was feasible and accurate (mean 3.2 mm) with minor complications.

    Conclusions:

    • Robotic CT-guided needle insertion demonstrates accuracy comparable to manual methods in phantom studies.
    • The robotic approach significantly reduces or eliminates physician radiation exposure.
    • Robotic needle insertion is a feasible and accurate technique for in vivo procedures in animal models.