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Flashcards in HEALTH Using The Spectrum Deck (12):
0

What are lasers?

An intense beam of light that carries a lot of energy.

1

What are lasers used for in hospitals?

Eye surgery (laser eye correction), to remove birthmarks and remove cancerous tumours.

2

What are X-rays used for?

To detect broken bones.

3

Explain how X-rays work

A beam of X-rays are aimed at the patient because bones are denser than surrounding tissues it absorbs more X-rays. A shadow is therefore cast on the photographic film that is placed behind the patient. X-rays blacken the film and bones show up white so breakages show up black.

4

Name a detector of X-rays

Photographic film

5

What is infrared radiation?

Heat radiation with a wave length longer than that of visible light.

6

What is infrared used for in hospitals?

Physiotherapists for muscle recovery. Thermal imaging eg tuners are warmer than surrounding tissue.

7

What is ultraviolet?

A radiation with a wavelength shorter than that of visible light.

8

What is ultraviolet used for in hospitals?

Skin problems (eg vitamin D deficiency)
Serialising medical equipment.

9

What happens with excessive exposure to ultraviolet radiation?

Skin cancer can occur.

10

What is computerised tomography?

Ct scans. Takes lots of little images (slices) to creat a large 3D X-ray. Much more accurate than normal X-rays.

11

Los the spectrum in terms of wavelength

Gamma rays
X-rays
Ultraviolet
VISIBLE LIGHT
Infrared
Microwaves
Radio waves