Siemens MAGNETOM Skyra fit Operator's Manual page 90

4 Physiological imaging
Attaching the PERU
90
2 Inform the patient that the knocking sounds during the
measurement are caused by switching the gradients on and off.
The PERU may also vibrate slightly.

Knocking sounds may affect the heart rate of patients, either
consciously or subconsciously. The resulting irregular cardiac
cycles adversely affect image quality.
The PERU is used together with ECG and respiratory triggering.
✓ ECG electrodes are attached.
✓ The patient table is in the Home position.
 CAUTION
Hot ECG cables!
Patient burns
◆ Place absorbent natural material between the ECG cables/
leads of the PERU and the patient's skin.
1 Position the patient on the patient table with the head toward the
magnet bore.
2 Position the PERU in the application cushion.

Especially with respect to whole-body examinations, it should be
noted that artifacts (homogeneity distortions) may occur in the
direct vicinity of the PERU transmitter unit.
3 Use the application cushion and position it together with the PERU
on the patient.
MR System | Operator Manual
Print No. M6-04401.621.02.02.02