Which frequencies does an MRI machine use? Is it microwaves?

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SUMMARY

MRI machines utilize radio-frequency (RF) magnetic fields operating in the megahertz (MHz) range for image reconstruction, not microwaves. Regulatory bodies, including the FDA, provide guidelines on RF power levels and switching rates, indicating that these factors do not pose significant risks to patients during MRI procedures. The technology is rooted in Nuclear Magnetic Resonance (NMR), which is based on principles of quantum mechanics and has been recognized with a Nobel Prize.

PREREQUISITES
  • Understanding of Nuclear Magnetic Resonance (NMR)
  • Familiarity with radio-frequency (RF) magnetic fields
  • Knowledge of megahertz (MHz) frequency ranges
  • Awareness of FDA regulations regarding medical imaging
NEXT STEPS
  • Research the principles of Nuclear Magnetic Resonance (NMR)
  • Learn about the safety guidelines set by the FDA for MRI procedures
  • Explore the technical specifications of RF magnetic fields in MRI
  • Investigate the quantum mechanics underlying MRI technology
USEFUL FOR

This discussion is beneficial for medical imaging professionals, radiologists, physicists interested in MRI technology, and anyone seeking to understand the safety and functionality of MRI machines.

KIAaze
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Hi,

Which frequencies does an MRI machine use? Is it microwaves?
Would prolonged exposure to it be damaging to the body?
 
Biology news on Phys.org
http://lmgtfy.com/?q=how+do+MRIs+work" :-p
 
Last edited by a moderator:
The actual signal information that is used for reconstructing the MRI images comes from radio-frequency (RF) magnetic fields, oscillating millions of times per second (MHz range).

The FDA and other advisory bodies have recommendations for limiting things such as the rate of switching of the RF gradient fields and the RF power levels, but I think the current consensus is that these things do not pose serious risks to the patient as used in MRI.
 
bobze said:
http://lmgtfy.com/?q=how+do+MRIs+work" :-p

That was wonderful.

Nuclear Magnetic Resonance imaging is actually a very advanced concept...it involves quantum mechanics and was worthy of a nobel prize.

Enjoy the reading
 
Last edited by a moderator:

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