In Normal Mode, what is the SAR limit for the head?

The specific absorption rate (SAR) limit for the head in Normal Mode during MRI procedures is crucial for ensuring patient safety and comfort. The correct value is 3.2 W/kg. This limit is based on guidelines established to prevent excessive heating of body tissues, particularly in sensitive regions like the head.

The SAR is an important factor in magnetic resonance imaging as it represents the rate at which energy is absorbed by the body when exposed to the radiofrequency (RF) fields generated during the imaging process. The value of 3.2 W/kg reflects the established threshold that balances effective imaging quality with the need to protect against thermal exposure that could cause adverse effects.

Other options, while they may represent SAR limits in different contexts or for other regions of the body, do not align with the established limit for the head under Normal Mode conditions. Thus, understanding the specific SAR limits helps professionals ensure compliance with safety standards and prioritize patient well-being during MRI examinations.