Flashcards on X-rays and the X-ray machine
X-rays and the X-ray Machine: A Comprehensive Guide for Students
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X-ray Imaging
24 cards
Card 1
Question: What applications beyond diagnostic imaging are X-rays used for today?
Answer: X-rays are used in industrial inspection and security screening.
Card 2
Question: How did the discovery of X-rays impact medicine?
Answer: It revolutionized medicine by allowing non-invasive visualization of the internal structures of the human body.
Card 3
Question: How is a projection image formed in X-ray imaging?
Answer: The X-ray beam passes through the patient, and the attenuated beam then strikes an image receptor, which records the spatial variation in X-ray intens
Card 4
Question: What are the components of traditional radiography's film-screen systems?
Answer: Photographic film sandwiched between intensifying screens.
Card 5
Question: How do intensifying screens work in film-screen systems?
Answer: X-rays interact with the screens, causing them to fluoresce and expose the film.
Card 6
Question: What is digital radiography (DR) and how does it work?
Answer: DR directly converts X-ray photons into an electrical signal using flat-panel detectors, providing immediate image display and allowing for post-proce
Card 7
Question: What are examples of flat-panel detectors used in Digital Radiography (DR)?
Answer: Amorphous selenium or amorphous silicon with scintillators.
Card 8
Question: How does Computed Radiography (CR) capture an X-ray image?
Answer: CR uses a photostimulable phosphor plate to capture the X-ray image, which is then scanned by a laser to release stored energy as light, converted int
Card 9
Question: What factors influence image quality in X-ray imaging?
Answer: Contrast, spatial resolution, and noise.
Card 10
Question: What is contrast in X-ray imaging and what determines it?
Answer: Contrast is the difference in brightness between adjacent areas, determined by differential attenuation and X-ray energy.