Fluoroscopes 5.0 / 5 based on 1 rating ? PhysicsMedical PhysicsGCSEEdexcel Created by: errolshineCreated on: 23-02-15 11:01 What does fluoroscopy produce? Moving images 1 of 9 How does it work? By placing a patient between an x-ray source and a fluorescent screen. 2 of 9 What is the process of fluoroscopy? Different amounts of x-rays are absorbed as they pass through the body and the x-rays then hit the fluorescent screen which absorbs them. 3 of 9 What happens once the x-rays have been absorbed by the fluorescent screen? The screen fluoresces them to give off light to show a live image on a screen. 4 of 9 Why is x-ray intensity important? The image we see is due to different bits on the screen being exposed because of different intensities of x-rays. 5 of 9 What happens when the x-rays are very intense? The higher the x-ray intensity, the brighter the screen. 6 of 9 What is an image intensifier? These are used to increase the brightness of the screen which means a lower dose of x-rays has to be given to the patient. 7 of 9 What does fluoroscopy help to do? Using fluoroscopes can diagnose problems in the ways that organs are functioning. 8 of 9 What is a contrast medium? A patient is given a contrast medium which improves the contrast of the image seen, by enhancing soft tissue (x-rays pass easily through soft tissue) 9 of 9
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