What are the consequences of exceeding the recommended SAR limits during an MRI scan?

Exceeding the recommended Specific Absorption Rate (SAR) limits during an MRI scan can lead to significant consequences, primarily an increased risk of tissue heating. SAR is a measure of the rate at which the body absorbs energy from the radiofrequency (RF) electromagnetic fields produced during MRI. When SAR limits are exceeded, the amount of energy absorbed can rise to levels that can cause harmful heating of the tissues, which can potentially lead to thermal injuries.

The potential harm to the patient can vary based on several factors, including the duration of the exposure, the specific tissues involved, and the patient's overall health. Elevated temperatures in tissues can disrupt cellular function, potentially causing burns or other forms of thermal injury. Proper monitoring and adherence to established SAR limits are critical to ensuring patient safety during MRI procedures.

In contrast, the other answer options do not accurately reflect the implications of exceeding SAR limits. Improved image quality is not a direct benefit of increasing SAR; in fact, it may lead to complications that compromise the overall imaging process. Claiming that there is no significant impact on the patient disregards the risks associated with tissue heating. Additionally, exceeding SAR limits does not enhance safety for individuals with metal implants; it can actually pose greater risks to them, as increased temperatures can