Preventing Burns and Hearing Protection

According to the video, what is the recommended thickness for padding placed between a patient and the sidewall of the MRI magnet to prevent RF burns?. 0.1 to 0.3 cm. 0.5 to 1.0 cm. 2.0 to 3.0 cm. 5.0 cm.

Why is "skin-to-skin" contact (e.g., knees touching or hands on hips) a major safety concern during an MRI scan?. It makes the patient feel too warm and uncomfortable. It creates a conductive loop where RF energy can concentrate and cause burns. It interferes with the radiofrequency signal reception. It causes the patient to move more frequently.

In the case study of the anesthetized patient who suffered severe burns during a two-hour spine scan, which factor contributed to the injury?. The patient was wearing a watch. The patient's shoulders were touching the bores of the bore without padding. The room temperature was too low. The patient was too thin for the bore.

What does Bill Faulkner recommend regarding patients who are under general anesthesia or heavily sedated during long scans?. Check them only once at the end of the scan. Leave the room and trust the electronic monitoring systems. Physically enter the room periodically to check padding and patient temperature. Increase the airflow in the bore to maximum and stay at the console.

What is the primary risk of using EKG electrodes that were not specifically tested for the MRI environment?. They will fall off during the scan. They can lead to severe thermal burns at the electrode site. They will cause the MRI computer to crash. They make the ECG tracing look too perfect.

When using a surface coil with a cable, what is the best practice to ensure patient safety?. Loop the cable to keep it neat. Let the cable rest directly on the patient's bare skin. Ensure the cable is not looped and is padded from the patient's skin. Tape the cable tightly to the patient's arm.

At what decibel (dB) level does the IEC standard require the use of hearing protection for MRI equipment?. Any level above 50 dB. Any level above 75 dB. Any level above 99 dB. Only if the sequence lasts longer than 30 minutes.

What is the recommended minimum sound attenuation rating for hearing protection used in an MRI environment?. 5 to 10 decibels. 25 to 30 decibels. Exactly 100 decibels. Attenuation is not important if they are comfortable.

According to the "Greg Brown" trick mentioned in the video, how can a patient verify if their earplugs are inserted properly?. By trying to whistle. By cupping their hands over their ears and taking them off to see if there is a sound difference. By checking their reflection in the bore's mirror. By shouting as loud as they can.

What is Bill Faulkner's opinion on patients who refuse to wear earplugs?. They should be allowed to scan if they sign a waiver. They should only be scanned with low-noise sequences. They should not be scanned at all. The technologist should just turn down the volume of the magnet.