CET Endoscopic Equipment & Instrumentation 2

Question 1

What type of light source is most commonly used in modern video endoscopy systems?

Accepted Answer

Xenon arc lamp

Answer

Xenon arc lamps provide the high-intensity, white-spectrum light required for modern video endoscopy imaging.

Question 2

Which component of a video endoscope converts optical images into electronic signals?

Accepted Answer

Charge-coupled device (CCD)

Answer

The CCD (or CMOS sensor) at the distal tip of a video endoscope converts light into electronic signals for display.

Question 3

What is the purpose of the air/water valve on an endoscope?

Accepted Answer

Delivers air to distend the lumen and water to clean the lens

Answer

The air/water valve allows the endoscopist to insufflate air to distend the organ lumen and flush water to clear debris from the lens.

Question 4

Which term describes the maximum angle through which an endoscope tip can be deflected?

Accepted Answer

Angulation range

Answer

Angulation range specifies the maximum degrees of tip deflection (up/down and left/right) achievable with the angulation controls.

Question 5

A dual-channel endoscope is primarily advantageous because it allows:

Accepted Answer

Simultaneous use of two accessories

Answer

Dual-channel endoscopes have two instrument channels, enabling simultaneous passage of two accessories for complex therapeutic procedures.

(CET) Certified Endoscopy Technician Practice Test