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Localization grid for MR-guided biopsy.

P C Hajek, V M Gylys-Morin, J Stavas

|June 1, 1987

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A new localization grid using Gadolinium diethylenetriaminepentaacetic acid (Gd-DTPA) enhances magnetic resonance (MR)-guided biopsies. This grid offers excellent localization for biopsies and fluid aspiration procedures.

Area of Science:

Medical Imaging
Biomedical Engineering
Interventional Radiology

Background:

Magnetic resonance (MR)-guided procedures require precise localization.
Existing localization methods may have limitations in accuracy or accessibility.
Gadolinium-based contrast agents are commonly used in MR imaging.

Purpose of the Study:

To design and evaluate a novel localization grid for MR-guided biopsies.
To determine optimal concentrations of Gd-DTPA for signal intensity.
To assess the effectiveness of the grid for biopsy and fluid aspiration.

Main Methods:

Evaluated signal intensities of various Gd-DTPA concentrations in polyethylene tubes.
Tested different tube sizes and MR pulse sequences.

Related Experiment Videos

Constructed a localization grid using optimal Gd-DTPA concentration and tube dimensions.

Main Results:

Optimal signal intensity for Gd-DTPA was achieved at a 500 microM concentration across all pulse sequences.
A 5-mm-diameter polyethylene tube grid filled with 500-microM Gd-DTPA was successfully created.
The developed grid demonstrated excellent localization capabilities.

Conclusions:

The designed Gd-DTPA localization grid is effective for MR-guided biopsies.
This tool improves precision in MR-guided interventions.
The grid facilitates accurate fluid aspiration under MR guidance.