Advanced Imaging Equipment Final Review

Which type of radiography system displays the image on a computer monitor?

• Thin Film Transistor (TFT)

• Indirect Capture DR

• Direct Radiography (DR)

• Computed Radiography (CR)

What does the acronym PSP stand for in digital radiography?

• Photo Stimulable Phosphor

• Phosphor Storage Plate

• Protective Support Plate

• Photodetector Scintillator Panel

Which component of a CR cassette absorbs x-rays that pass through the PSP plate and reduces backscatter?

• Aluminum backing

• Reflective layer

• Phosphor layer

• Protective layer

What is the purpose of a storage phosphor in Computed Radiography (CR) systems?

• To temporarily store energy representing the image signal

• To directly capture and read out an electronic image signal

• To convert x-rays into visible light

• To convert light into an electrical signal

In Direct Capture DR systems, how are x-rays converted into an electrical signal?

• By using a scintillator to convert x-rays into light, and then converting light into an electrical signal

• By using a thin film transistor to convert x-rays into an electrical signal

• By directly converting x-rays into an electrical signal

• By using a photoconductor to convert x-rays into an electrical signal

What is the purpose of a scintillator in Indirect Capture DR systems?

• To convert x-rays into visible light

• To temporarily store energy representing the image signal

• To convert light into an electrical signal

• To directly capture and read out an electronic image signal

What is the function of a charge-coupled device (CCD) in Indirect Capture DR systems?

• To convert light into an electrical signal

• To temporarily store energy representing the image signal

• To directly capture and read out an electronic image signal

• To convert x-rays into visible light

What is the major difference between direct capture and indirect capture in digital radiography?

• Direct capture uses digital detectors while indirect capture uses PSP

• Direct capture uses ADC while indirect capture does not

• Direct capture uses scintillators and indirect capture does not

• Direct capture converts x-rays to electric charge and indirect capture converts x-rays to light first and then to electric charge

Which component converts light into an electrical signal in indirect capture DR systems?

• ADC

• CCD

• Photodiode

• CMOS

What is the photodiode in indirect capture made of?

• Europium

• Cesium iodide

• Amorphous selenium

• Amorphous silicon