The Imaging Process
What occurs if the the image quality acceptance limits are narrow?
What is a higher repeat rate?
What is quantum mottle?
What is a lack of sufficient photons reaching the IR?
What is dynamic range?
What is the visible range of brightness of the display monitor light emission?
What two properties comprise visibility of detail?
What is IR exposure and contrast?
What does window width adjust?
What is contrast?
What phase of the imaging process is unique to each imaging modality?
What is image acquisition?
What is the primary controlling factor of IR exposure?
*Bonus 50* What is the relationship between the two factors?
What is mAs?
What is directly proportional?
What is the difference between physical contrast and visible contrast?
What is physical contrast that refers to the total range of IR exposure values recorded by the IR while visible contrast refers to the total range of IR exposures that can be perceived by the human eye?
What compose the property of spatial resolution?
What is geometry, IR, and motion?
What is the generator conversion formula?
What is mAs x conversion factor?
What is a pyramid problem?
What is a concept that explains that an acceptable image is dependent on a variety of factors?
IR exposure is up to how much percent greater at the cathode side of the beam than the anode?
What is 45%?
What is the primary controlling factor for subject contrast?
What is kVp?
How does beam restriction effect contrast?
What is reduces scatter and therefore increases contrast?
What is the K factor?
*bonus 50* What must the K factor number be between?
What is the contrast improvement factor?
What is 1.5-3.5 for recorded improvement on contrast?
What are the four stages of the diagnostic process?
What is narrowing the search field, hypothesis activation, information seeking, and hypothesis evaluation?
To maintain IR exposure, how much should you change kVp?
What is the 15% rule?
A radiograph that has high contrast displays what?
What results in few shades of gray b/w lightest and darkest, with a short/narrow dynamic range and a narrow window width?
What are the properties of the anatomical part?
What is the tissue type, tissue thickness, contrast media, and pathology?
What is differential absorption?
What is the result of differences in transmission of the beam as it passes through the patient resulting in signal differences to the digital detector?
What factors apply to how the beam is controlled by the radiographer prior to detection by the IR?
What is IR exposure, contrast, spatial resolution and distortion?
What is blooming and how is it caused?
Blooming occurs when a large focal spot is selected (high mA) because the incident electron beam is not as easily focused by the focusing cup. It is caused due to tube malfunction.
What is the total amount of irradiated material a function of?
What is body part thickness and area of exposure?
What are the 10 properties of IR exposure and contrast?
mAs, kVp, focal spot, anode heel effect, distance, filtration, beam restriction, anatomical part, grid construction, and image receptor?
What is the scale of contrast and what is it also known as?
What is the number of useful visible shades of gray, also known as visible IR exposure?