Title Details: | |
Methods of Radiation γ |
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Authors: |
Zafiropulos, Vassilis |
Reviewer: |
Fragkiadakis, Georgios |
Subject: | MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES > HEALTH SCIENCES > NUTRITIONAL SCIENCES > DIETETICS NATURAL SCIENCES AND AGRICULTURAL SCIENCES > PHYSICS > GENERAL PHYSICS > METROLOGY, MEASUREMENTS, AND LABORATORY PROCEDURES NATURAL SCIENCES AND AGRICULTURAL SCIENCES > PHYSICS > INDERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY > BIOLOGICAL AND MEDICAL PHYSICS ENGINEERING AND TECHNOLOGY > > > |
Description: | |
Abstract: |
This chapter presents the two main methods based on gamma radiation emitted by the radioactive nuclei of certain basic chemical elements of the human body. This radiation is emitted either spontaneously, by inherent radioactive isotopes present in high concentration in the body, or following induced emission when the body is irradiated with neutrons. In the first case, the Total Body Potassium (TBK) method is mentioned, which is based on the existence of a radioactive isotope of potassium, both in the natural environment and in the human body. The quantitative detection of gamma radiation emitted by 40K nuclei allows us to accurately calculate the quantity of potassium contained in the body and, therefore, the cellular mass and fat-free mass. In the second case, the Neutron Activation Analysis (NAA) method is involved, where the body is irradiated with a neutron beam. The nuclei of the basic chemical elements of the tissues are excited, emitting gamma radiation of characteristic frequency for each isotope and intensity proportional to the concentration of the isotope. These methods are used at the atomic level of study but indirectly contribute to molecular and cellular level studies as well, as there are specific correlations between chemical elements and various compounds/cell groups. In the following two sections, these two methods are presented in the above order.
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Graphic Editors: |
Loukeri, Sofia |
Type: |
Chapter |
Creation Date: | 2015 |
Item Details: | |
License: |
http://creativecommons.org/licenses/by-nc-nd/3.0/gr |
Handle | http://hdl.handle.net/11419/3633 |
Bibliographic Reference: | Zafiropulos, V. (2015). Methods of Radiation γ [Chapter]. In Zafiropulos, V. 2015. Measurement of Human Body Composition [Undergraduate textbook]. Kallipos, Open Academic Editions. https://hdl.handle.net/11419/3633 |
Language: |
Greek |
Is Part of: |
Measurement of Human Body Composition |
Number of pages |
8 |
Publication Origin: |
Kallipos, Open Academic Editions |