Image detection and enhancement (AQA A-Level Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What percentage of X-ray energy is absorbed by traditional photographic film?
What percentage of X-ray energy is absorbed by traditional photographic film?
What does a scintillator do in a Flat Panel Detector?
What does a scintillator do in a Flat Panel Detector?
Emits light when absorbing X-rays
How does light intensity from a scintillator relate to X-ray energy absorbed?
How does light intensity from a scintillator relate to X-ray energy absorbed?
Directly proportional
What determines the resolution of a digital X-ray image?
What determines the resolution of a digital X-ray image?
Total number of photodiodes
Why do FTP detectors allow lower radiation doses than film?
Why do FTP detectors allow lower radiation doses than film?
More sensitive, shorter exposure time
When is a contrast medium used in X-ray imaging?
When is a contrast medium used in X-ray imaging?
Little difference in proton numbers
What is a barium meal used for in X-ray imaging?
What is a barium meal used for in X-ray imaging?
Gastrointestinal imaging
How do X-ray opaque contrast media appear on X-ray film?
How do X-ray opaque contrast media appear on X-ray film?
White areas
What are intensifying screens made of?
What are intensifying screens made of?
Fluorescent crystals
What is the role of the photocathode in fluoroscopic image intensification?
What is the role of the photocathode in fluoroscopic image intensification?
Emits electrons