CBET Diagnostic Imaging Equipment

Question 1

What type of radiation does a conventional X-ray machine produce?

Accepted Answer

Ionizing electromagnetic radiation (X-rays)

Answer

Non-ionizing infrared radiation

Answer

Ultrasonic sound waves

Answer

Gamma radiation from isotopes

Question 2

Which unit measures absorbed radiation dose in tissue?

Accepted Answer

Gray (Gy)

Answer

Sievert (Sv)

Answer

Roentgen (R)

Answer

Becquerel (Bq)

Question 3

What is the primary safety concern for BMETs working on MRI equipment?

Accepted Answer

Extremely strong static magnetic field attracting ferromagnetic objects

Answer

High voltage electric shock only

Answer

Radioactive contamination

Answer

Laser eye injury

Question 4

In ultrasound imaging, what physical principle allows tissue boundaries to be visualized?

Accepted Answer

Reflection of sound waves at acoustic impedance mismatches

Answer

Absorption of X-ray photons

Answer

Fluorescence under UV light

Answer

Nuclear magnetic resonance

Question 5

A CT scanner's X-ray tube requires replacement. Which parameter most directly indicates tube wear?

Accepted Answer

Total accumulated milliampere-seconds (mAs) / heat units

Answer

Display screen brightness

Answer

Gantry rotation speed

Answer

Patient table weight limit

Question 6

Which regulatory body requires X-ray equipment registration and inspection programs in US states?

Accepted Answer

State radiation control programs (under agreement with NRC/FDA)

Answer

OSHA only

Answer

The Joint Commission

Answer

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