Written by students who passed Immediately available after payment Read online or as PDF Wrong document? Swap it for free 4.6 TrustPilot
logo-home
Document preview thumbnail
Preview 1 out of 29 pages
Other

unit 21( distinction grade)

Document preview thumbnail
Preview 1 out of 29 pages

this document will help you get distinction

Content preview

What is non-ionising radiation?
Any sort of electromagnetic radiation that does not carry enough photon energy to complete or
remove an electron from an atom or molecule. The energy produced from non ionising
radiation is only enough for excitation of an electron or electrons to a higher state of energy.
MRI and ultrasound are two examples of non-ionising radiation modalities that are utilised to
give medical diagnosis treatment.
The production of MRI
In MRI, hydrogen protons, which are abundant in the human body, spin to create a magnetic
charge, and the MRI operator produces a radio frequency pulse to push the protons to match 90
or 180 degrees with the strong magnetic field. So, when the radiofrequency pulse is turned off,
the protons realign because the radiofrequency wave forces them to align against their nature.
Electron magnetic energy/radio waves are produced by the proton as it realigns. After the pulse
is turned off, the signals emitted by the protons that were repositioned combine to form a
signal that the MRI can detect and identify between the various tissues based on how rapidly
the proton releases the electron magnetic energy.


The principle of MRI
Nuclear magnetic resonance (NMR) is the basis of MRI. This is the method used in MRI to
produce a detailed picture of the scanned tissues by identifying proton in specific places all
throughout body. The principles of NMR are that atoms with an odd number of protons or
neutrons have a spin positive or negative movable electric charge generate a magnetic field, and
there are many atoms within the body that can act as a good magnetic resonance example
being hydrogen, which is positively charged and has a magnetic spin whereby the protons of
hydrogen generate a magnetic spin properly that can be used by the MRI to produce images.
Explain why MRI is used for diagnosis and treatment of human medical
conditions.
Because MRIs are non-ionising radiation, doctors and other health professionals can utilise
them to diagnose and treat a wide variety of human medical conditions. Because soft tissue
such as the brain, heart, and breast contain a lot of water and hence a lot of hydrogen protons,
they are generally the first areas of the body to be scanned with an MRI. Because MRI creates
very detailed images of the area under investigation, it helps medical professionals to look for
potential problem spots where patients may complain of signs and symptoms of the underlying
medical condition. Doctors will be able to recognise medical conditions that are present in an
image acquired using MRI. This is especially useful for analysing body parts such as the brain,
heart, spine, joints, breast, abdomen, blood vessels, soft tissues, and organs to determine a
variety of medical conditions or damage to these areas, such as blood vessel damage in the
brain or heart disease, spinal cord injuries, stroke, or tumours present in the brain cell, and so
on. By being able to recognize these medical problems via an MRI scan, doctors are best
prepared to cure or alleviate these medical disorders because the highly detailed image may
highlight the particular locations within these organs, etc. that need to be treated in order to
treat the patient further. Because MRI is so good at detecting medical issues, it's also great at
diagnosing them.
Justification on the use of MRI for diagnosing/ treating MS

Connected book
 image
Frances Annets, Shirley Foale, Roy Llewellyn, Ismail Musa, Sue Hocking, BTEC Level 3 National Applied Science, Student Book
Publisher: maart 2016 ISBN: 9781292134130 Edition: 2

Document information

Study Level
Uploaded on
May 19, 2022
Number of pages
29
Written in
2021/2022
Type
Other
Person
Unknown
£14.19

Wrong document? Swap it for free Within 14 days of purchase and before downloading, you can choose a different document. You can simply spend the amount again.
Written by students who passed
Immediately available after payment
Read online or as PDF

Sold
1
Followers
1
Items
1
Last sold
4 year ago


Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their exams and reviewed by others who've used these revision notes.

Didn't get what you expected? Choose another document

No problem! You can straightaway pick a different document that better suits what you're after.

Pay as you like, start learning straight away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and smashed it. It really can be that simple.”

Alisha Student

Working on your references?

Create accurate citations in APA, MLA and Harvard with our free citation generator.

Working on your references?

Frequently asked questions