18 Questions
What is the primary difference between direct and indirect digital conversion in radiography?
The need for intermediate light production
What is the primary function of a transistor receiver in a cassette-less radiography system?
To convert x-ray energy into a digital signal
What is the typical resolution required for a monitor to display a radiographic image with quality approaching that of a film image?
1024 x 1024 pixels
What is the primary purpose of image post-processing in digital radiography?
To reduce image noise and optimize contrast
What type of phosphors are commonly used in indirect digital conversion?
Thallium doped Cesium Iodide (CsI)
What is the name of the detector material used in direct digital conversion?
Amorphous Selenium
What is the purpose of the intense light source in the CR process?
To erase the residual image from the plate
What is the primary difference between Computed Radiography (CR) and Direct Digital Radiography (DR)?
CR uses a two-stage process, while DR uses a single-stage process
What is the role of the Analog to Digital converters (ADC) in the CR process?
To digitize the signal from the photomultiplier tube
What is the relationship between the emitted light intensity and the original incident X-ray intensity?
The emitted light intensity is directly proportional to the original incident X-ray intensity
What is the purpose of the optical array in the CR process?
To capture the emitted light intensity
What is the primary advantage of Direct Digital Radiography (DR) over Computed Radiography (CR)?
DR eliminates the need for a separate image capture and readout process
What is the primary function of an intensifying screen in conventional radiography?
To emit light when x-rays strike it
In Computed Radiography (CR), what is the role of photostimulable phosphors?
To convert x-ray energy into a latent image
What is the main difference between Computed Radiography (CR) and Direct Digital Radiography (DR)?
CR uses film while DR uses a digital detector
What is the final step in the radiography workflow of conventional radiography?
Storage of the film in the file room
What is the primary advantage of digital imaging over conventional radiography?
Ability to view and store images on a computer
What is the purpose of a CR reader in digital radiography?
To read the latent image on a photostimulable phosphor plate
Test your knowledge on the direct radiography system, a cassette-less system that uses a transistor receiver to capture and convert x-ray energy into digital signals. Learn about its components, installation, and digital conversion process. Evaluate your understanding of this medical imaging technology.
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