MRI MRI Patient Care and Positioning 3

Question 1

Which coil configuration is used to image the entire spine in a single acquisition with uniform SNR?

Accepted Answer

Phased-array spine coil spanning cervical, thoracic, and lumbar regions

Answer

Single surface coil placed at the lumbar spine

Answer

Body transmit/receive coil only

Answer

Head and neck coil alone

Question 2

For MRI of the knee, the standard patient position is:

Accepted Answer

Knee extended in slight external rotation (5–15°), patient supine in dedicated knee coil

Answer

Knee flexed 90°, patient prone

Answer

Knee hyperflexed, patient lateral

Answer

Knee flexed 45°, patient supine without coil

Question 3

A patient develops nausea and vomiting during IV gadolinium infusion. The most appropriate immediate action is to:

Accepted Answer

Stop the infusion, assess the patient, and administer antiemetic if needed while monitoring for escalation

Answer

Continue the infusion as nausea is expected

Answer

Increase infusion rate to complete dosing faster

Answer

Administer epinephrine immediately

Question 4

Which patient positioning accessory is routinely used to reduce hand and wrist movement during an MRI wrist examination?

Accepted Answer

Dedicated wrist coil with the patient prone and arm extended overhead ('Superman position')

Answer

Foam head cushion

Answer

Knee support wedge under the wrist

Answer

Compression wrap around the shoulder

Question 5

Which MRI-compatible monitoring device is used to detect heart rate and trigger cardiac-gated sequences?

Accepted Answer

MR-conditional ECG with carbon or fiber-optic leads free of conductive loops

Answer

Standard hospital ECG with adhesive electrodes

Answer

Finger-clip optical pulse oximeter (used for cardiac gating)

Answer

Blood pressure cuff inflation timing

Question 6

When should a technologist notify the supervising radiologist or radiologist immediately during an MRI exam?

Accepted Answer

When any adverse reaction to contrast, change in patient condition, or safety concern arises

Answer

When the patient requests a blanket

Answer

When the patient completes the screening form

Answer

When the scan takes longer than expected