1. RADIATION PROTECTION IN RADIOTHERAPY
Part No...., Module No....Lesson No
Module title
IAEA Training Material on Radiation Protection in Radiotherapy
RADIATION PROTECTION IN RADIOTHERAPY
Part 2: Radiation Physics
PRACTICAL EXERCISE
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

2. Part No...., Module No....Lesson No
Module title
Objectives
To be familiar with different types of ionizing radiation
To understand the most important interaction processes between radiation and matter
To be able to use and understand all basic radiation quantities
To have a basic understanding of the means of radiation detection
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

3. Part 2: Radiation Physics
Part No...., Module No....Lesson No
Module title
IAEA Training Material on Radiation Protection in Radiotherapy
Part 2: Radiation Physics
Practical 1: Inverse square law
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

4. Part No...., Module No....Lesson No
Module title
Contents + Objective
Learn about the importance of distance as a means to reduce radiation exposure
Perform an experiment to demonstrate this
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

5. What Minimum Equipment is Needed?
Part No...., Module No....Lesson No
Module title
What Minimum Equipment is Needed?
Radiation source
Radiation detector
Tape distance measure
Graph paper
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

6. Part No...., Module No....Lesson No
Module title
Radiation source
Ideal a 60-Co source for teaching (activity <100kBq)
Should be high energy gamma to minimize attenuation
Some experiments can also be performed with brachytherapy source
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

7. Part No...., Module No....Lesson No
Module title
Radiation detector
Best a Geiger counter with window thick enough to be mostly sensitive to gamma radiation
A survey meter may also be suitable
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

8. Record readings at different distances
Part No...., Module No....Lesson No
Module title
Record readings at different distances
detector
source
distance
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

9. Part No...., Module No....Lesson No
Module title
Record and plot data
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

10. Important consequences
Part No...., Module No....Lesson No
Module title
Important consequences
Distance is a powerful way to reduce exposure
Practical implications in radiotherapy:
use long tweezers to handle sources in brachytherapy
a long maze can reduce shielding requirements for doors significantly
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

11. Part No...., Module No....Lesson No
Module title
Acknowledgement
Photos from Leybold-Didaktik web page:
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources

12. Part No...., Module No....Lesson No
Module title
Questions?
Let’s get started...
Part 2, Practical 1
IAEA Post Graduate Educational Course in Radiation Protection and Safe Use of Radiation Sources