Medical applications of physics

Mind Map by ryangriscti, updated more than 1 year ago
Created by ryangriscti over 6 years ago


Physics (Further) Mind Map on Medical applications of physics, created by ryangriscti on 11/17/2013.

Resource summary

Medical applications of physics
1 X-rays
1.1 Electromagnetic waves
1.1.1 All waves in the electromagnetic spectrum are transverse waves which can travel through a vacuum
1.1.2 Shorter wavelengths travel the most energy
1.1.3 Gamma rays, x-rays and some ultra-violet rays have enough energy to remove electrons from atoms or molecules and form ions This is called ionisation ionising radiation can: Harm the body Kill cells Damage a cells DNA Cause a mutation leading to cancer
1.2 X-ray images
1.2.1 Photographic film exposed to x-rays will turn black
1.2.2 X-rays are transmitted through some materials that are opaque to visible light such as healthy human tissue
1.2.3 Other materials, such as metal and bone, absorb x-rays, and some materials partially absorb them
1.3 CT Scans
1.3.1 Computerised tomography is used to build up a three-dimensional image of the inside of an object
1.3.2 To make one, X-ray images are taken from a number of different positions and angles All the results are processed in a computer to build a three-dimensional X-ray image It can then be processed in a number of ways, depending on the nature of the investigation carried out

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