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Physical Health: Videos

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This video, from the Institute of Physics (IOP), shows medical scientists at work using a variety of sophisticated devices which use principles of physics to investigate what is happening inside the body. The video is presented as a whole and, for ease of use, in four sections: X-rays: how x-ray and digital images are produced by modern machines (1:59) CT scanning: using x-rays to study cross sections of body tissues (3.33) Pulse oximetry: how to measure oxygen content of blood without taking a blood sample (0.35) Ultrasound: using echoes to invesitgate what is happening inside the body (5.20)

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