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Related Experiment Video

Updated: Feb 27, 2026

Real-time Video Projection in an MRI for Characterization of Neural Correlates Associated with Mirror Therapy for Phantom Limb Pain

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Visualization of small vibrations inside an MRI scanner using video motion amplification.

Youngseob Seo¹, Zhiyue J Wang²

¹Group for Emerging Research Instruments, Korean Research Institute of Science and Standard, Daejeon, Republic of Korea.

Medical Physics

|February 26, 2026

Summary

This summary is machine-generated.

High-speed video motion amplification detects subtle MRI vibrations, offering a new quality assurance method. This technique visualizes and quantifies movements invisible to the naked eye during diffusion-weighted imaging scans.

Keywords:

diffusion‐weighted MRI high‐speed video motion amplification quality assurance visualization of vibration

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Area of Science:

Medical Imaging
Biophysics
Quality Assurance

Background:

Diffusion-weighted MRI (DW-MRI) uses strong gradients that can cause mechanical vibrations.
These vibrations may degrade image quality and signal.
Current vibration detection methods have limitations in accessibility and application.

Purpose of the Study:

To assess the feasibility of using motion amplification with high-speed video.
To detect and analyze vibrations during DW-MRI acquisition.

Main Methods:

A gel phantom simulating a human head was used within an MRI scanner.
High-speed videos were recorded during idle and DW-MRI scanning conditions.
Motion amplification software analyzed marker displacement on the phantom.

Main Results:

No visible motion was observed with the naked eye.
Motion amplification revealed significant marker displacement during DW-MRI scanning.
Median root-mean-square displacement increased from 0.85 µm at idle to 2.59 µm during scanning.

Conclusions:

Motion amplification of high-speed video is a viable method for detecting MRI vibrations.
This technique can serve as a valuable quality assurance tool.
It offers an accessible alternative to conventional vibration assessment methods.