Flashcards in HEALTH Using The Spectrum Deck (12)
What are lasers?
An intense beam of light that carries a lot of energy.
What are lasers used for in hospitals?
Eye surgery (laser eye correction), to remove birthmarks and remove cancerous tumours.
What are X-rays used for?
To detect broken bones.
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.
Name a detector of X-rays
What is infrared radiation?
Heat radiation with a wave length longer than that of visible light.
What is infrared used for in hospitals?
Physiotherapists for muscle recovery. Thermal imaging eg tuners are warmer than surrounding tissue.
What is ultraviolet?
A radiation with a wavelength shorter than that of visible light.
What is ultraviolet used for in hospitals?
Skin problems (eg vitamin D deficiency)
Serialising medical equipment.
What happens with excessive exposure to ultraviolet radiation?
Skin cancer can occur.
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.