The Problem of Metal Needles in Acupuncture-fMRI Studies
Author Information
Author(s): Florian Beissner, Ulrike Nöth, Thomas Schockert
Primary Institution: Goethe University
Hypothesis
This study aims to compare two novel types of acupuncture needles with a standard needle for their effect on MRI image quality.
Conclusion
Standard acupuncture needles should not be used in MRI, while nonferromagnetic metal needles are recommended for acupoints outside the transmitter coil, and plastic needles are suited for points inside the coil.
Supporting Evidence
- Standard acupuncture needles cause severe distortions in MRI images.
- Non-ferromagnetic needles do not cause visible distortions in MRI.
- Plastic needles are suitable for acupuncture points inside the MRI coil.
Takeaway
Using the wrong type of acupuncture needle in an MRI can cause problems, but there are better options that won't mess up the images.
Methodology
The study compared the effects of three types of needles on MRI image quality using a 3T Magnetom TRIO Scanner.
Limitations
The study did not report any burns from heating of needles, but risks associated with electrically conducting needles were noted.
Digital Object Identifier (DOI)
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