P12.5 Xrays

Question 1

How are x-rays produced

Answer 1

in an x-ray tube when a fast moving electron hits a target

Question 2

How are x-ray images made

Answer 2

X-rays from an X-ray tube are directed at a patient, a lightproof cassette containing a photographic film or a flat-panel detector is placed on the other side of the patient. X-rays pass through soft tissue but are absorbed by bones, teeth, metal, The radiograph shows a negative image of the bones. A hole/cavity on a tooth shows up as a dark area in the bright image

Question 3

Ad of x-rays

Answer 3

Can destroy tumours
Can diagnose problems
Good quality
Thick plate between X-ray tube and body stop x-rays damaging healthy cells
Airport security

Question 4

Why is it unsafe to use an x-ray on an unborn child

Answer 4

X-ray ionises, cells are still developing to it can cause mutations or cancer to form

Question 5

Disad of x-rays

Answer 5

Ionising radiation can damage body cells
Can only see bone, teeth and metal not organs