Flashcards on How to read an X-ray image
How to Read an X-ray Image: A Student's Guide to Analysis
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X-ray
43 cards
Card 1
Question: What is the fundamental diagnostic tool in medicine that uses electromagnetic radiation to create images inside the body?
Answer: X-ray imaging (radiography)
Card 2
Question: What is the core principle behind X-ray imaging?
Answer: Differential absorption
Card 3
Question: How is an X-ray image often described due to differential absorption?
Answer: As a 'shadow' image
Card 4
Question: In X-ray imaging, what causes some X-ray photons to be absorbed or scattered by tissues?
Answer: The X-ray beam passing through the human body
Card 5
Question: What determines the amount of X-ray energy that passes through tissues?
Answer: The composition and density of the tissues encountered
Card 6
Question: On an X-ray image, what do areas where many X-rays pass through appear as?
Answer: Dark
Card 7
Question: On an X-ray image, what do areas where many X-rays are absorbed appear as?
Answer: Light or white
Card 8
Question: What two main factors determine how much X-ray radiation a tissue absorbs?
Answer: Atomic Number (Z) and Density (ρ)
Card 9
Question: Why do tissues with higher atomic numbers absorb more X-rays?
Answer: They are composed of elements with higher atomic numbers.
Card 10
Question: Give an example of an element with a high atomic number found in bone that contributes to strong X-ray absorption.
Answer: Calcium (Z=20)