Effective dose
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At the time the article was created Jeremy Jones had no recorded disclosures.
View Jeremy Jones's current disclosuresAt the time the article was last revised Raymond Chieng had no financial relationships to ineligible companies to disclose.
View Raymond Chieng's current disclosuresThe effective dose is used to compare the stochastic risk of non-uniform exposure to radiation. Body tissues react differently to radiation and cancer induction occurs at a different rate of dose in different tissues. Hence, the effective dose is the risk of developing fatal cancer in the tissue in question 3.
The effective dose is calculated by multiplying the equivalent dose (HT) by a tissue weighting factor (WT) 3.
For any examination, the effective dose to each body part can be summed after being multiplied by its weighting factor 3.
If the body is uniformly irradiated, the sum of tissue weighting factors is equal to one.
Quiz questions
References
- 1. Farr's physics for medical imaging. Saunders Ltd. (2007) ISBN:0702028444. Read it at Google Books - Find it at Amazon
- 2. Dendy PP, Heaton B. Physics for diagnostic radiology. Taylor & Francis. ISBN:0750305916. Read it at Google Books - Find it at Amazon
- 3. Mettler F, Huda W, Yoshizumi T, Mahesh M. Effective Doses in Radiology and Diagnostic Nuclear Medicine: A Catalog. Radiology. 2008;248(1):254-63. doi:10.1148/radiol.2481071451 - Pubmed
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