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A guidance device for CT-guided procedures.

G D Reyes1

  • 1Department of Radiology, St Louis University Medical Center.

Radiology
|September 1, 1990
PubMed
Summary
This summary is machine-generated.

A novel device aids in precise biopsy needle placement during computed tomographic (CT) guided procedures. This tool demonstrated accuracy within +/- 3 degrees in both phantom and patient studies, enhancing CT-guided biopsies.

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Area of Science:

  • Medical Imaging
  • Surgical Devices
  • Biotechnology

Background:

  • Accurate needle placement is critical for effective biopsies.
  • Computed tomographic (CT) guidance improves targeting but requires precise angle control.
  • Existing methods for angle determination can be cumbersome.

Purpose of the Study:

  • To design and evaluate a novel device for facilitating accurate biopsy needle angulation under CT guidance.
  • To assess the device's precision in phantom models and clinical settings.

Main Methods:

  • A device comprising a fluid-filled disk and a grooved stem was developed.
  • The device utilizes an air-fluid level to indicate needle angle.
  • Accuracy was tested in a phantom study (n=20) and a patient study (n=14).

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Main Results:

  • In phantom studies, 85% of needle passes were within +/- 3 degrees of the target angle.
  • All phantom passes were within +/- 5 degrees.
  • In patient studies, all needle placements achieved an angle within +/- 3 degrees of the intended trajectory.

Conclusions:

  • The developed device effectively facilitates precise biopsy needle angulation during CT guidance.
  • The device shows promising accuracy and ease of use for improving CT-guided biopsy procedures.
  • This tool has the potential to enhance the safety and efficacy of interventional radiology procedures.