Unit 21: Medical Physics Applications Test Bank Completely Verified
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Course
Medical Physics Applications
Institution
Medical Physics Applications
ses of radiofrequency waves and strong magnets - ANSWER-produce detailed images of soft tissues in the body
what is magnetic resonance imaging? - ANSWER-use of electromagnetic energy to produce an image of soft tissues in any plane of the body
What body parts is MRI used on? - ANSWER-brain an...
Unit 21: Medical Physics Applications Test Bank
Completely Verified
uses of radiofrequency waves and strong magnets - ANSWER-produce detailed images
of soft tissues in the body
what is magnetic resonance imaging? - ANSWER-use of electromagnetic energy to
produce an image of soft tissues in any plane of the body
What body parts is MRI used on? - ANSWER-brain and spine, joints, blood vessels,
heart conditions, abnormal body water conditions
Benefits of MRI - ANSWER-non-contact, non-invasive, painless
main types of medical lasers - ANSWER-carbon dioxide, argon, yttrium
aluminium garnet (YAG), pulsed dye
uses of medical lasers - ANSWER-eye surgery, removal of kidney stones, removal
of tumours
benefits of medical lasers - ANSWER-can focus on a small area and damage less
tissue surrounding the area to be treated;
less pain, swelling and scarring than using traditional surgery
How do lasers work? - ANSWER-• Light of specific wavelength passes through a gain
medium, which amplifies light with higher
energy by stimulated emission.
• Reflectors send the light backwards and forwards in the gain medium until it has
gained
enough energy.
• High-energy amplified light emitted as a narrow beam or is spread out, depending on
application, through a laser oscillator
What does infrared thermography (IRT) do? - ANSWER-produces thermal images
(thermograms) that show areas of abnormal body temperature, 'hot spots' on the skin
that result from higher blood flow due to tumours
Benefits of IRT - ANSWER-fast, passive, non-contact and non-invasive, maps body
surface temperature remotely.
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