A Quality Control Program Is for _____

question 18

Multiple Choice

A quality control program is for _____.

• A) film processors
• B) CT scanners
• C) x-ray tubes
• D) all of the above

---

Definitions:

Isovolumetric Relaxation

A phase in the cardiac cycle where the heart muscle relaxes but the volume of the ventricles does not change because all heart valves are closed.

SA Node

The sinoatrial node, a group of cells in the right atrium of the heart that sets the pace of the heartbeat.

P-R Interval

A measurement in electrocardiography representing the time between the onset of the P wave and the start of the QRS complex, related to atrial depolarization and AV nodal delay.

Ventricular Muscle

The muscle tissue that makes up the walls of the ventricles in the heart, responsible for pumping blood throughout the body.