X-RaysLo: To know how x-rays are used in medical physics

X-rays

What are X-rays?

What are X-rays?

• Frequency, wavelength?

How does X-ray imaging work?

How does X-ray imaging work?• Transmitted by? Absorbed by?

• Photographic film? Or CCD’s?

What are the dangers of X-rays?

X-ray therapy

X-ray therapy• Ionising rays.

• Danger to all cells.

• Focus ray and rotate around tumour to minimise damage to body cells.

CT scans (computer tomography scanner)

CT Scanner• This builds up a 3D image of an organ as X-rays are taken

from all angles in a cross section and put together

How would the dosage compare to a normal X-ray?

CT Vs X-RayCT Scanner X-Ray

Image distinguishes between bone and soft tissue

Image distinguishes between different types of soft tissue

3D image

Radiation Dose

Cost

Summary• Using X-Rays to diagnose and treat illnesses.