100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary OCR A level Physics A 6.5 Medical Physics £6.99   Add to cart

Summary

Summary OCR A level Physics A 6.5 Medical Physics

 13 views  0 purchase

Summary notes for topic 6.5 Medical physics covering X-rays, X-ray scattering, gamma camera, CAT scans, PET scans, Ultrasound, Doppler imaging, acoustic impedance. Notes feature definitions, highlighted key terms, explanations, diagrams and equation break downs.

Preview 2 out of 8  pages

  • June 28, 2022
  • 8
  • 2021/2022
  • Summary
All documents for this subject (10)
avatar-seller
hannahgrason
6.5 Medical
Physics

, ✗ rays -






Can be plane polarised


Diffracted by atoms in
crystals
Short ( 10-8-10 -13m)
wavelength







Electromagnetic waves -
travel at speed of light
Photons have 10-10000 than visible
more
energy light photons

×



Harmful to living cells /used for cancer treatment

cathode acts as a heater and
produces electrons by thermionic emission

electrons accelerated through evacuated
tube towards the anode by large p d- .





anode made from a target metal with
a high melting point e.
g. tungsten
X
ray photons produced when electrons
• -




are decelerated by hitting the anode
oil is circulated around the 1% of the
energy output of photons is
• <


kinetic
anode to cool it
energy of the electrons
anode is rotated to spread the heat
anode is shaped to deflect the photons
in the desired direction
through a
window
tobe tired with lead to shield the
X-ray
radiographer from Krays emitted in other
directions


One electron releases one X
ray photon Therefore from the principle of
-
.



,



conservation of energy :




maximum energy of X-ray photon =
maximum kinetic
energy of electron


¥ er
÷
=

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card for the summaries. There is no membership needed.

Focus on what matters

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 hannahgrason. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for £6.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

73918 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

Start selling
£6.99
  • (0)
  Add to cart