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High-frequency Ultrasound Imaging of Mouse Cervical Lymph Nodes
Published on: July 25, 2015
Accuracy of sonographically guided biopsy using a freehand versus needle-guided technique: computed tomographic
Wael Shabana1, Ania Kielar, Vivek Vermani
1Department of Medical Imaging University of Ottawa, Ottawa, Ontario, Canada. wshabana@toh.on.ca
Summary
Needle-guided biopsy techniques offer improved efficiency and reproducibility compared to freehand methods. This study validates the benefits of guided techniques for sonographically guided biopsies, especially for less experienced practitioners.
Area of Science:
- Medical Imaging
- Interventional Radiology
Background:
- Sonographically guided biopsy utilizes either freehand or needle-guided techniques.
- Direct comparison and validation of anesthetic and biopsy needle tract relationships are lacking.
Purpose of the Study:
- To validate parameters of freehand versus needle-guided biopsy techniques.
- To assess final tract positions using computed tomography as a reference standard.
Main Methods:
- Comparison of freehand and needle-guided sonographically guided biopsy techniques.
- Computed tomography used for reference standard assessment of tract positions.
Main Results:
- Statistically significant differences observed in passes for contrast injection and needle insertion between techniques.
- Guided techniques showed significant improvements in injection and insertion times.
- A significant difference was found in the distance between contrast and final needle tracts (P = .03).
Conclusions:
- Needle-guided biopsy techniques are faster, more efficient, and reproducible than freehand methods.
- Guided techniques are particularly beneficial for less experienced practitioners in sonographically guided biopsies.
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