MRI MRI Patient Care and Positioning 2

Question 1

Which vital sign parameter is most critical to monitor during MRI in a sedated pediatric patient?

Accepted Answer

Oxygen saturation via MR-compatible pulse oximetry

Answer

Continuous oxygen saturation monitoring via MR-compatible pulse oximetry is essential in sedated pediatric patients to detect respiratory compromise caused by sedation.

Question 2

For MRI of the breast, the patient should be positioned in which orientation?

Accepted Answer

Prone with breasts hanging freely in a dedicated bilateral breast coil

Answer

Prone positioning with the breasts hanging freely in dedicated bilateral surface coils minimizes motion and maximizes coil coupling for optimal breast MRI.

Question 3

Gadolinium contrast extravasation at the IV injection site is classified as which type of adverse event?

Accepted Answer

Local injection site reaction (extravasation)

Answer

Extravasation occurs when contrast leaks from the vein into surrounding tissue; it is a local injection site reaction, not a systemic allergic event.

Question 4

When performing MRI on a patient with an insulin pump, which step is essential before beginning the exam?

Accepted Answer

Remove the pump (if removable) or verify the pump is MR-conditional with the manufacturer before scanning

Answer

Insulin pumps may malfunction, heat, or be damaged in the MRI environment; removal or manufacturer verification of MR-conditional status is mandatory.

Question 5

The landmark for centering an MRI brain exam using a head coil is located at:

Accepted Answer

Nasion or bridge of the nose

Answer

The nasion (bridge of the nose) is the standard external landmark used to center the isocenter of the MRI system for brain imaging.

MRI - Magnetic Resonance Imaging Practice Test

MRI - Magnetic Resonance Imaging Practice Test

MRI MRI Patient Care and Positioning 2