Projected image
What remains of the primary beam after it has passed through the patient?
What is the signal? (remnant beam)
Phosphor conversts x-rays into light, which then strikes the AMA panel.
What is indirect conversion?
Program used within the radiology department to monitor the x-ray equipment.
What is quality control?
What is Europium in relation to the photostimulable phosphor?
What is the activator?
Ohm's law
What is voltage = current times resistance?
Subject contrast is caused by the range of absorption of radiation by the subject that is the material being radiographed. This is affected by:
What is tissue thickness, atomic number of tissue, and kVp?
The range of pixel values made available for image formation by the software and hardware of an imaging system.
What is the dynamic range?
GSDF
What is grayscale display function?
The diameter of the laser beam determines what?
What is the spatial resolution in the CR system?
If the exposure rate 1 m from a source is 9 mR/hr, what is the exposure rate 3 m from the source?
What is 1 mR/hr?
The reduction in the total number of photons remaining in the beam after passing through the pt.
What is attenuation?
Measures how effectively an X-ray imaging system converts incident radiation into a high-quality image while preserving the signal-to-noise ratio.
What is DQE? (Detective quantum efficiency)
Linear organic molecules
What is liquid crystals?
More shades of gray increases what?
What is contrast resolution?
What is the grid conversion factor for a 10:1 grid?
What is 5?
Focal spot size, distance, beam alignment, anatomical part, CR angle, IR placement describe what image quality?
What is geometric integrity? (recognizability)
Electrical phenomenon that occurs at the detector when the dels in a particular areas have reached the maximum charge. Resulting in a repeated image.
What is saturation?
Preprocessing feature used to apply an equalized response program.
What is flatfielding?
Mechanical part of CR reader.
What is slow scan?
State the transformer law related to volate and turns.
What is Vs/Vp = Ns/Np?
Adjusting mAs associated with an increase in kVp to maintain consistent exposure.
What is the 15% rule?
The size of the pixel is directly related to which image quality?
What is spatial resolution?
Recalling archived images.
What is prefetching?
ADC
What is analog digital converter?
What is the formula to calculate HU for a 3-phase generator?
What is HU = 1.4 x mAs x kVp?