What is the safest way to administer an MRI test of head when metal dental works are present?

The safest way to administer an MRI test of the head when metal dental works are present involves a combination of safety precautions and technical modifications to the MRI procedure. Here's how it can be done:

1. Patient Screening:

- Before the MRI, the patient undergoes thorough screening to identify the type and location of metal dental work.

- The patient is asked about any potential allergies to contrast agents (used for certain MRI sequences) and provides information about their overall health.

2. Informed Consent:

- The patient is provided with detailed information about the MRI procedure, potential risks, and precautions related to metal dental work.

- Written consent is obtained from the patient before proceeding with the MRI.

3. Safety Measures:

- An experienced and qualified MRI technologist performs the procedure.

- Appropriate warning signs and barriers are used to restrict unauthorized access to the MRI suite during the examination.

- The patient is closely monitored throughout the MRI for any signs of discomfort or adverse reactions.

4. MRI Scanner Adjustments:

- Gradient reduction techniques are employed to reduce the magnetic field gradient strength, minimizing the risk of heating at the metal dental restoration site.

- Specific pulse sequences are selected to optimize image quality while minimizing potential risks.

5. Use of Non-ferromagnetic Materials:

- Non-ferromagnetic materials are utilized for the patient's comfort and safety during the MRI.

- Cushions, blankets, and headrests made of non-metallic materials are used.

6. Patient Positioning and Monitoring:

- The patient is positioned carefully within the MRI scanner, ensuring the head is centered in the magnetic field.

- Constant communication is maintained between the patient and the MRI technologist to address any concerns or discomfort.

7. Emergency Equipment Accessibility:

- Emergency equipment such as oxygen and resuscitation supplies are readily available within the MRI suite.

8. Follow-up Monitoring:

- After the MRI, the patient is monitored for any signs of adverse reactions or complications related to the metal dental work.

- Appropriate medical intervention is provided if necessary.

9. Medical Consultation:

- In some cases, consultation with a dentist or medical specialist may be sought before the MRI to assess the specific risks associated with the patient's metal dental work and determine their suitability for the MRI procedure.

10. Alternative Imaging Techniques:

- In rare instances where metal dental work poses a significant risk or impedes essential diagnostic information, alternative imaging techniques may be considered, such as CT scans or ultrasound, based on the specific clinical scenario.

By adhering to these safety guidelines, implementing technical adjustments to the MRI scanner, and maintaining open communication with the patient, it's possible to safely administer an MRI test of the head even when metal dental works are present. The safety and well-being of the patient remain the top priority throughout the procedure.