X-Rays Physics
- Created by: Esther
- Created on: 28-04-13 17:05
View mindmap
- X-rays in Medicine
- X-Rays
- High Frequency
- Short Wavelength
- Electromagnetic Wave
- Pass through healthy tissue but is absorbed by denser material
- Use in CCD's
- Charge-coupled device
- silicon chip made up of millions of pixels
- detect x-rays and produce electronic signals used to form high res images
- Use in CT Scanners
- Computerised Axial Tomography
- x-ray beam is fired through body from x-ray tube
- x-rays are picked up on the other side by detectors
- the tube and detectors are rotated during the scan to give a 2D slice through the body
- multiple 2D images can be layered together to create a 3D image
- Treating Cancer
- X-rays can cause ionisation
- X-rays focused at the right doseage can kill cancer cells
- Radiographers take precautions such as lead aprons to stop the x-rays killing healthy cells
- X-Rays
Comments
No comments have yet been made