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iation Safety Officer Course Module 1.6 – Biological Effect of Radiations
OVERVIEW
As a worker in the field of radiation protection, you should understand what the
possible consequences of exposure to ionizing radiation are and why radiation
protection practices should be in place. In this module you will learn how
ionizing radiation can affect the human body. Subsequent modules will
discuss how these effects can be minimized or prevented.
As an introduction to this module, you will be given a basic understanding of
how the human body works. The module goes on to discuss the effects of
ionizing radiation on a cellular level and the resulting effects to the total body.
You will then learn about the terms used to describe these types of effects.
LEARNING OBJECTIVES
When you have completed this module you will be able to do the following:
1) Describe the functions of the respiratory, digestive, circulatory,
lymphatic and urinary systems of the body.
2) Explain how inhaled and ingested materials may eventually be
deposited in body organs.
3) Describe body cells in terms of the cell membrane, cytoplasm, nucleus,
chromosomes, genes and DNA.
4) Explain the difference between direct and indirect radiation damage to
cells in terms of ionization, free radicals and damage to DNA.
5) List the three main consequences of damage to cells.
6) Identify ionizing radiation exposures as either acute or chronic.
7) Explain the term deterministic effect and give examples of such effects.
8) Explain the term stochastic effect and give examples of such effects.
9) Explain the difference between early effects and late effects and give
examples of each.
10) Describe the possible effects of ionizing radiation for members of the
public, radiation workers and in accident situations.
11) List body organs in increasing radiosensitivity by analysis of a list of
tissue weighting factors.
12) Explain the effects of ionizing radiation on a developing foetus.
King Faisal Specialist Hospital and Research Centre – Biomedical Physics Department Page 1
OVERVIEW
As a worker in the field of radiation protection, you should understand what the
possible consequences of exposure to ionizing radiation are and why radiation
protection practices should be in place. In this module you will learn how
ionizing radiation can affect the human body. Subsequent modules will
discuss how these effects can be minimized or prevented.
As an introduction to this module, you will be given a basic understanding of
how the human body works. The module goes on to discuss the effects of
ionizing radiation on a cellular level and the resulting effects to the total body.
You will then learn about the terms used to describe these types of effects.
LEARNING OBJECTIVES
When you have completed this module you will be able to do the following:
1) Describe the functions of the respiratory, digestive, circulatory,
lymphatic and urinary systems of the body.
2) Explain how inhaled and ingested materials may eventually be
deposited in body organs.
3) Describe body cells in terms of the cell membrane, cytoplasm, nucleus,
chromosomes, genes and DNA.
4) Explain the difference between direct and indirect radiation damage to
cells in terms of ionization, free radicals and damage to DNA.
5) List the three main consequences of damage to cells.
6) Identify ionizing radiation exposures as either acute or chronic.
7) Explain the term deterministic effect and give examples of such effects.
8) Explain the term stochastic effect and give examples of such effects.
9) Explain the difference between early effects and late effects and give
examples of each.
10) Describe the possible effects of ionizing radiation for members of the
public, radiation workers and in accident situations.
11) List body organs in increasing radiosensitivity by analysis of a list of
tissue weighting factors.
12) Explain the effects of ionizing radiation on a developing foetus.
King Faisal Specialist Hospital and Research Centre – Biomedical Physics Department Page 1
