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Components of MRI

Components of MRI. The strength of the magnet. The effects of magnetic field on loose objects. Only MRI compatible safe equipments can be brought into the scanner in CTI. The effects of magnetic field on electronic devices. Spine stimulator. Deep Brain Stimulator. Pacemaker.

damian-rodriquez
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Components of MRI

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  1. Components of MRI

  2. The strength of the magnet

  3. The effects of magnetic field on loose objects

  4. Only MRI compatible safe equipments can be brought into the scanner in CTI

  5. The effects of magnetic field on electronic devices

  6. Spine stimulator Deep Brain Stimulator Pacemaker

  7. Rotation of the secured objects by the rotational force

  8. Vascular stent

  9. Relative contraindications include:

  10. Devices that are relatively safe to study include

  11. Pregnant MRI

  12. Components of MRI

  13. Components of MRI

  14. Effects of rapidly changing magnetic filed According to Faraday’s law of induction, changing magnetic fields may cause induced electrical current in conductors within the body. The gradient magnetic force strength increases away from the isocenter. electrical current

  15. EPI MRI

  16. Applications of the equation

  17. Effects of rapidly changing magnetic filed

  18. Avoid Gradients effects

  19. Avoid Gradients effects • Do not allow patients to make circuits: separate hands and feet

  20. Noahs MRI accident. On November 22, 2009 we handed Noah off to the MRI staff (for his first MRI since the discovery of his brain tumor) so he could be put to sleep for his scan. After he awoke from the scan, we were questioned about the injury to his arm. The staff quickly realized that he had been somehow burned during his MRI scan.

  21. Components of MRI

  22. The Electromagnetic Spectrum

  23. RF transformation into heat

  24. The unit of SAR • Specific Absorption Rate (SAR). Watt/Kg is the unit of SAR

  25. Effects and safety of Radio Frequency Pulses

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