iMRS 2000 - PEMF Publications
blank img place holder

[Physical parameters in the use of MRI tomography. Limitation due to physiologic reactions and guidelines. Radiation Protection Commission]


PURPOSE: The standards and regulations concerning the protection of patients and operator staff within the context of MRI are compiled. Resulting consequences regarding physical parameters are evaluated. MATERIAL AND METHODS: The static magnetic field, heating effects caused by RF-fields and acoustical noise are outlined. The actual boundaries of these parameters are compared against the relevant published standards. Peripheral stimulation limits due to pulsed gradient fields have been determined in a new clinical study. RESULTS: Many parameters recommended for the normal operating mode are already exceeded during routine MRI. Referring to our clinical study, we found that limits recommended in the MRI relevant standards are unnecessarily conservative and can actually be doubled. CONCLUSIONS: The applicable national and international standards and regulations show (at least partly) that serious differences in the definition of terms and values exist. The application of these standards would be much easier if they were made uniform. The values defined in the MR-specific standards should be adapted to actual knowledge concerning patients' safety.


Frese, G. and Hebrank, F. X. and Renz, W. and Storch, T.








Dose-Response Relationship, Radiation Humans Magnetic Resonance Imaging/*adverse effects Radiation Injuries/prevention & control Radiation Protection/*methods


Frese, G Hebrank, F X Renz, W Storch, T English Abstract Guideline Practice Guideline Germany Der Radiologe Radiologe. 1998 Sep;38(9):750-8.


Siemens AG, Medizinische Technik, GG MR, Erlangen.

Book title:


Copyright@ All right reserved by 1998-2019.

Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease. If you are pregnant, nursing, taking medication, or have a medical condition, consult your physician before using this product. This information is not intended as medical advice and may not be used as medical advice. It should not be used to replace the advice of your own doctor.

imrs 2000 logo

Visit mobile website:

Web Design & SEO by Kardash & Sons