Essay
Unit 20 Assignment 3
- Institution
- PEARSON (PEARSON)
Unit 20 Medical Physics Techniques Assignment 3 (P M D)
[Show more]
7 reviews
By: Misbahali • 4 year ago
By: andref • 5 year ago
By: rishusharma68 • 6 year ago
By: Legendarylad • 6 year ago
By: vineethjillella • 6 year ago
By: Ridwana • 6 year ago
By: suhairadnan • 6 year ago
shit assignment all they did was copy and paste
Content preview
Laura LatkovaTechnetium 99m
Technetium is radioactive substance with half-life of 6 hours. –m in the name means it is
metastable; after its half-life the technetium 99m becomes technetium 99.
It is used for diagnostic imaging as after a day there is only about 6% left of the technetium
in the body.
Because Technetium has short half-life, hospitals need to create their own Technetium 99m.
They do this by generator which takes their parent isotope Molybdenum 99 (has half-life of
66 hours) which as it decays and emits beta rays, it creates Technetium 99m. This then
decays even more into Technetium 99.
Process of creating Tc 99m
First the M 99 needs to be created; this happens in nuclear reactor by adding neutrons to
high enriched uranium target. Then the M99 is created and placed in the Technetium
generator. The generator has aluminium oxide which bonds with M 99 but not Technetium
99m. The generators then are drained by saline solution across the M99/ aluminium oxide
capsule. This way all the Technetium 99m that has been created is extracted and the M99
which has not yet decayed is still in generator. The extracted saline solution and Technetium
99m can be now used for diagnostic imaging.
Technetium 99m is sterile (does not contain any bacteria or other microorganisms) and
pyrogen free (does not contain any substances which could cause body temperature to
increase). These qualities are perfect for diagnostic imaging because as it is inserted into
body and it would be either of those things, it could cause bacterial or viral infection; what
would result in patients getting sick.
Few quality checks must be done e.g. prevention of cross-contamination, using sterile
syringes to ensure that there are not any side effects (like getting bacterial infection) from
the treatment; daily checks of radioactive dose calibrators to ensure the accuracy is right.
Pros and cons of using Radionuclide imaging
Pros
Low radiation exposure risk
Images of internal part of body
Shows many serious health issues
Cons
Not good quality image is produced
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller LauraLat. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £4.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
66579 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now