8,700 Studies Reviewed. 87.0% Found Biological Effects. The Evidence is Clear.
Shield Your Body
Whole Body / General

MAGNETIC RESONANCE IMAGING - NIH CONSENSUS DEVELOPMENT CONFERENCE STATEMENT

Bioeffects Seen

Authors not listed · 1987

Share:

The 1987 NIH consensus established that powerful RF fields in MRI are medically acceptable despite being far stronger than everyday EMF exposures.

Plain English Summary

Summary written for general audiences

This 1987 NIH consensus development conference brought together medical experts to establish official guidelines for magnetic resonance imaging (MRI) safety and clinical use. The conference addressed the radiofrequency electromagnetic fields used in MRI scanners and their potential health effects. This represents one of the earliest formal government assessments of RF exposure from medical imaging technology.

Why This Matters

This NIH consensus conference marked a pivotal moment when federal health authorities first grappled with RF electromagnetic field exposure in medical settings. What makes this significant is the timing - 1987 was when MRI technology was rapidly expanding into hospitals nationwide, yet safety protocols were still being established. The conference had to balance the clear medical benefits of MRI imaging against potential risks from the powerful radiofrequency fields these machines generate. The reality is that MRI scanners expose patients to RF fields thousands of times stronger than what you experience from cell phones or WiFi. Yet the medical establishment concluded the benefits outweighed the risks for diagnostic purposes. This early precedent of accepting high-intensity EMF exposure for medical benefit contrasts sharply with ongoing debates about much lower exposures from consumer devices.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
Unknown (1987). MAGNETIC RESONANCE IMAGING - NIH CONSENSUS DEVELOPMENT CONFERENCE STATEMENT.
Show BibTeX
@article{magnetic_resonance_imaging_nih_consensus_development_conference_statement_g7197,
  author = {Unknown},
  title = {MAGNETIC RESONANCE IMAGING - NIH CONSENSUS DEVELOPMENT CONFERENCE STATEMENT},
  year = {1987},
  
  
}

Quick Questions About This Study

MRI scanners generate radiofrequency fields thousands of times more powerful than cell phones. While phones operate at milliwatt power levels, MRI machines can use kilowatts of RF energy to create detailed body images.
In 1987, MRI was new technology rapidly entering hospitals without established safety guidelines. The NIH brought experts together to evaluate potential health risks from the powerful electromagnetic fields MRI machines generate.
The 1987 conference focused on acute exposure risks during medical procedures, not chronic low-level exposure like modern EMF concerns. MRI benefits were clearly measurable, making risk-benefit analysis more straightforward than consumer devices.
MRI scans typically last 15-90 minutes, during which patients receive intermittent but intense RF exposure. This concentrated exposure pattern differs significantly from the continuous low-level EMF exposure from personal devices.
The conference helped establish guidelines for safe MRI operation, including RF power limits and patient monitoring protocols. These standards became the foundation for FDA regulations governing MRI scanner safety requirements.