A-Level Physics AQA 7408

10.6: Radionuclide imaging and therapy

#10.6.1

Imaging techniques

Use of a gamma-emitting radioisotope as a tracer; technetium-99m, iodine-131 and indium-111 and their relevant properties.

The properties should include the radiation emitted, the half-life, the energy of the gamma radiation, the ability for it to be labelled with a compound with an affinity for a particular organ.

The Molybdenum-Technetium generator, its basic use and importance.

PET scans.

#10.6.2

Half-life

Physical, biological and effective half-lives; 1TE=1TB+1TP\dfrac{1}{T_E} = \dfrac{1}{T_B} + \dfrac{1}{T_P} ; definitions of each term.

#10.6.3

Gamma camera

Basic structure and workings of a photomultiplier tube and gamma camera.

#10.6.4

Use of high-energy X-rays

External treatment using high-energy X-rays. Methods used to limit exposure to healthy cells.

#10.6.5

Use of radioactive implants

Internal treatment using beta emitting implants.

#10.6.6

Imaging comparisons

Students will be required to make comparisons between imaging techniques. Questions will be limited to consideration of image resolution, convenience and safety issues.

10.5
X-ray imaging
11.1
Rotational dynamics