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Lecture notes Unit 21 (2) - Medical Physics Applications
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Learning aim C1. MRI
Health and safety Risk Side effects Limitations
The powerful Due to the magnet The radio The mri is an
magnetic force, if a magnetic frequencies energy expensive
resonance imaging object does come enables it to machinery to buy
due to it being a into the room it may change over time so not all hospitals
massive magnetic cause unwanted for example it may will have the
force stuff such as movement which get stronger this capability to buy
screwdriver or could lead to further may cause the mri one, the mri is a
metal that's damage to the machine to heat up very time
attracted to the patient or damage and cause the consuming
magnet will be the costly machine. surrounding tissue investigation. The
asked to be to burn, but this is mri machine may
removed as it can over an extended not be able to tell
cause damage to period of time. the differences or
the patient or detect those
machine or even it diseases. Also
doesn't interrupt the people who may be
scanning that's claustrophobic may
ongoing. not want to get mri
done
(https://www.radiologyinfo.org/en/info/safety-mr)(1/03/22)
(Benefits and Risks | FDA.)(2/03/22)
(limitations .)(2/03/22)
, Learning aim C
Laser
Health and Risks Side effect Limitation
safety and how
does it work?
Laser can be One risk of the Drowsiness is one Costly for the
used for brain laser is that it can of them and patients and
surgery to cut off cause serious dizziness and costly for the
the part of the skin damage fatigue. Also NHS, higher
brain where there through some serious side forces upon the
is the trumor part. photochemical or effects of lasers in laser during the
High intensity. If thermal burns medicine could be cutting procedure,
the laser beam depending on the memory loss due if not used
hits an untargeted wavelength of the to a chunk of your properly can be
tissue it could laser beam brain being cut. very disruptive.
cause serious waves. Most of Also incomplete
damage the risks are surgery could
especially to the mostly related lead to pain,
eye. toward the eye as bleeding,
So the NHS it is highly infection, scarring
advice to wear: sensitive. and skin coulor
● Eye change but the
protection laser surgery is a
● Skin non ionsing wave
protection so it doesn't
● They use really have long
the term effects other
powerful than if it
laser in accidentally hits
enclosed the retina as it's a
rooms. very sensitive
area during the
tumour surgery.
(https://www.spiedigitallibrary.org/conference-proceedings-of-spie/
11143/111432X/Medical-laser-safety/10.1117/12.2519542.full?SSO=1)
(Lasers - Health Care : OSH Answers)
(Evaluation of Laser Effects on the Human Body After Laser Therapy.)
(Medical Lasers | FDA.)
(Advantages and Disadvantages of Laser - GeeksforGeeks)
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