What is the SAR limit for the whole body in First Level Mode?

The specific absorption rate (SAR) limit for the whole body in the First Level Mode is set at 4.0 W/kg. This limit is established to ensure the safety of individuals undergoing magnetic resonance imaging (MRI) procedures. It is critical to maintain exposure levels within this threshold to minimize the risk of adverse effects from heat generation in body tissues due to radiofrequency (RF) energy.

The First Level Mode typically refers to operational conditions in which the imaging system operates at lower power levels and is generally associated with routine scanning protocols. Adhering to the SAR limit is crucial for protecting patients, ensuring their safety during the scan, and minimizing the potential for thermal injuries.

Understanding this SAR value aids Magnetic Resonance Safety Officers and healthcare professionals in evaluating the safety and appropriateness of MRI scans, contributing to effective risk management and patient care strategies.