Practise linking excessive electromagnetic exposure to the affected tissue and select shielding, distance or exposure-time precautions appropriate to the source.
X-rays are used in hospitals to help treat patients.
Suggest and explain three precautions for the safe use of X-rays.
1.
2.
3.
Any three from
- shielding of operator behind screen / lead apron / out of room AND to absorb radiation
- shielding of other parts of patient with lead / shielding of other parts of patient AND to absorb radiation
- distance from source AND reduces intensity / amount of radiation / exposure
- limit time of exposure / not too frequent / max number of X-rays per year AND to limit dose
- limit strength / intensity of X-ray beam AND to limit dose
B3