Medical Applications of Physics 0.0 / 5 ? PhysicsMedical PhysicsGCSEAQA Created by: StanoCreated on: 21-05-13 19:34 X-rays pass through... healthy tissue 1 of 24 X-rays are absorbed by... bones and metal 2 of 24 What does CCD stand for? charged coupled devices 3 of 24 What are CCDs made of? silicon chips 4 of 24 What does CT stand for? computerized axial tomography 5 of 24 What type of images do CT scans form? three dimensional 6 of 24 X-rays are ______ so can be caused to treat cancer ionising 7 of 24 Radiographers stand behind a ____ screen to minimise radiation dose lead 8 of 24 Ultrasound waves get _____ ______ at a boundary between media partially reflected 9 of 24 You can use _______ traces to find boundaries oscilloscope 10 of 24 One use of ultrasound Scan of a fetus 11 of 24 Ultrasound waves are.. non ionising 12 of 24 Ultrasound images are typically... blurry 13 of 24 Refraction is when waves change ______ as they enter a denser medium direction 14 of 24 The ratio of speed to light in a medium is its ________ _____ refractive index 15 of 24 Two main types of lens... Converging and diverging 16 of 24 A converging lens is a... convex 17 of 24 A diverging lens is a... concave 18 of 24 A diverging lens forms a ______ image virtual 19 of 24 The more powerful the lens, the ______ the focal length shorter 20 of 24 The _______ does most of the eye's focusing cornea 21 of 24 What is the coloured part of the eye? iris 22 of 24 The hole in the middle of the iris pupil 23 of 24 The lens is connected to the... ciliary muscles 24 of 24
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