Related Experiment Video
Updated: Jun 13, 2026
06:03
Use of Electromagnetic Navigational Transthoracic Needle Aspiration (E-TTNA) for Sampling of Lung Nodules
Published on: May 23, 2015
Biopsy needle as MRE driver for tumor detection
X G Zhao1, Y Zheng, Q C C Chan
1Department of Electrical and Electronic Engineering, The University of Hong Kong.
Summary
This study introduces a novel biopsy needle driver for Magnetic Resonance Elastography (MRE) to measure tissue stiffness. The new method accurately detects simulated tumors and in-vivo rabbit tumors, improving diagnostic capabilities.
Area of Science:
- Biomedical Engineering
- Medical Imaging
- Rheology
Background:
- Magnetic Resonance Elastography (MRE) is a non-invasive imaging technique for quantitative tissue elasticity measurement.
- Conventional MRE uses surface drivers, limiting shear wave penetration and requiring separate biopsy procedures.
- Tumor detection and characterization often rely on invasive methods or less precise imaging.
Purpose of the Study:
- To develop and evaluate a biopsy needle as an integrated driver for MRE.
- To assess the feasibility of using a biopsy needle driver for in-situ tumor detection and stiffness measurement.
- To overcome the limitations of depth penetration and separate biopsy procedures in MRE.
Main Methods:
- A biopsy needle was utilized as an oscillating driver to generate shear waves for MRE.
- Experiments were conducted using a porcine gel phantom with a 15% gel inclusion simulating a tumor.
- In-vivo experiments were performed on rabbits for tumor detection using the biopsy needle driver.
Main Results:
- The biopsy needle driver successfully generated shear waves for MRE measurements.
- Accurate detection of the simulated tumor's stiffness and location within the gel phantom was achieved.
- In-vivo experiments demonstrated the capability of the biopsy needle driver for accurate tumor stiffness and location assessment in rabbits.
Conclusions:
- A biopsy needle can serve as an effective integrated driver for MRE, enabling simultaneous imaging and tissue sampling.
- This approach enhances the accuracy of tumor stiffness and location measurement.
- The biopsy needle MRE technique shows promise for improved in-vivo tumor diagnosis and characterization.
