CT scanner (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 type of images do traditional X-rays generate?
What type of images do traditional X-rays generate?
2D images
What do CT scanners produce by combining multiple images?
What do CT scanners produce by combining multiple images?
3D images of the area investigated
How does the X-ray tube operate in a CT scanner?
How does the X-ray tube operate in a CT scanner?
It revolves around the patient
What type of X-ray beam does a CT scanner emit?
What type of X-ray beam does a CT scanner emit?
Narrow, monochromatic beam
Which detector records the highest intensity in a CT scanner?
Which detector records the highest intensity in a CT scanner?
One opposite the X-ray source
What does the computer do with data from CT detectors?
What does the computer do with data from CT detectors?
Compiles data & constructs cross-sections
What is an advantage of CT scanning over ultrasound?
What is an advantage of CT scanning over ultrasound?
Higher quality images
How does CT radiation exposure compare to standard X-rays?
How does CT radiation exposure compare to standard X-rays?
Higher dose of ionising radiation
What issue arises with materials of similar densities in CT scans?
What issue arises with materials of similar densities in CT scans?
Low contrast & potential distortion
What must patients do during CT scanning for optimal image clarity?
What must patients do during CT scanning for optimal image clarity?
Remain still, sometimes hold breath