Principles of diagnostic imaging 2 - KB

Give 2 ways to reduce the effects of scattered radiation on the X-ray image.

How are grids used?

What is the result of using grids?

What are grids?

What can vary from grid to grid?

What is grid ratio?

How is grid ratio used to remove scatter?

What is the most common grid ratio?

What is lines per centimetre?

What is grid factor?

What are the 4 types of grid?

What are features of parallel grids?

What are features of focused grids?

What are features of Pseudo-focussed grid?

What are features of Potter-Bucky grids?

What is collimation?

How is collimation usually achieved?

How does the light beam diaphragm work?

How is the light beam diaphragm adjusted?

What is the main advantage of collimation?

What is the overall effect of collimation?

What are the hazards of radiation?

What are the potential results of radiation?

What is the ALARA principle?

What are the methods of protection from radiation?

How can space work to protect?

How can barriers be used as protection?

How is protective clothing used as protection?

How can time be used as a form of protection?

Should any part of an assistant ever be allowed to be exposed to the primary beam?

What are the legislation surrounding the use of radiation?

What should every practice have that works with ionising radiation?

What 2 people need to be appointed by a practice working with ionising radiation?

What does the RPS do?

What does the RPA do?

What are the restrictions on the controlled area?

What should the Local Rules have details of?

What should be done for restricting an animal during X-ray?

What must anyone who does stay in the room wear?

Are humans allowed to be in the X-ray even with protective clothing on?

What can be placed under the X-ray cassette to absorb radiation from a vertical beam?

Who should never be involved in radiography?

Why are Personal dosimeters worn?

What are features of Personal Dosimeters?

What are the legal dose limits?

What can happen if you take a radiograph of a person, even with permission?