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Related Experiment Video

Updated: May 22, 2026

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

Multiple-mouse Neuroanatomical Magnetic Resonance Imaging

Published on: February 27, 2011

An implanted 8-channel array coil for high-resolution macaque MRI at 3T.

T Janssens¹, B Keil, R Farivar

¹A.A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA 02129, USA.

|May 22, 2012

Summary

This summary is machine-generated.

An implanted 8-channel coil array significantly boosts brain imaging sensitivity in rhesus monkeys. This novel approach enhances signal-to-noise ratio for clearer anatomical, diffusion tensor, and functional MRI scans.

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Area of Science:

Neuroimaging
Biomedical Engineering
Magnetic Resonance Imaging

Background:

Improving Magnetic Resonance Imaging (MRI) sensitivity is crucial for detailed brain studies.
Current external coils for macaque functional MRI (fMRI) have limitations in signal-to-noise ratio (SNR).

Purpose of the Study:

To develop and evaluate an implanted 8-channel receive coil array for enhanced macaque brain MRI.
To compare the SNR performance of the implanted array against conventional external coils.

Main Methods:

Construction and implantation of a permanent 8-channel receive coil array adjacent to the rhesus monkey skull.
Comparison of SNR and noise amplification using the implanted array versus single-, 4-, and 8-channel external coils.
Evaluation of the array's performance in anatomical, diffusion tensor, and functional brain imaging.

Main Results:

The implanted array demonstrated significantly higher SNR within the brain compared to external coils.
A 5.4-fold, 3.6-fold, and 3.4-fold SNR increase was observed in the cerebral cortex versus external single-, 4-, and 8-channel coils, respectively.
The implanted array maintained 2.1x to 2.5x higher SNR in the brain center compared to external coils.

Conclusions:

A stable, implanted phased-array coil can substantially increase spatial resolution in macaque MRI.
This technology offers improved sensitivity for anatomical, diffusion tensor, and functional brain imaging in non-human primates.
The findings support the use of implanted coils for advanced neuroimaging research.