How Moisture Level Impact MRI Room performance and Patient Safety: A Comprehensive Analysis

Abstract

Magnetic Resonance Imaging (MRI) is a highly sensitive imaging modality that requires strict environmental control to ensure optimal performance and patient safety. Among environmental factors, moisture level—commonly expressed as relative humidity—plays a critical yet often underrecognized role in influencing MRI hardware reliability, image quality, and clinical safety. This study examines the impact of high and low moisture conditions in MRI suites, focusing on their effects on image quality, superconducting magnet systems, radiofrequency (RF) coils, electronic components, and patient comfort and safety. Elevated humidity levels are associated with increased RF noise, image artifacts, corrosion of coils and electronic components, condensation-related equipment malfunction, and heightened infection and slip hazards. Conversely, excessively low humidity increases the risk of electrostatic discharge, electronic instability, and patient discomfort.

The findings are discussed in the context of existing standards and guidelines, including recommendations from the American College of Radiology (ACR), ASTM, engineering-based MRI facility practices, and controlled-environment principles outlined in ISO 14644. Although current guidelines emphasize environmental stability, explicit humidity thresholds for MRI rooms remain limited. The study highlights the need for continuous environmental monitoring, dedicated HVAC systems, and improved reporting of moisture-related incidents. Future research should focus on quantitative, multi-center studies to establish stronger correlations between humidity control and MRI performance outcomes. Overall, this work underscores moisture management as a fundamental component of MRI quality assurance and patient safety.