What is the sum of the tissue weighting factors in the calculation of effective dose?
Tissue weighting factor is a measure of risk of deterministic effects or stochastic health risk which may occur from irradiation of that particular tissues.It indicates various radiosensitivities of organ and tissues in body.
For calculation of effective dose, individual organ equivalent dose values are multiplied with the respective tissue weighting factor and products added.
Sum of effective doses to all organs and tissues of body indicates the effective dose for the entire body.
Summation of tissue weighting factors equals to 1.0 so it means if whole body is radiated with uniform radiations,then effective dose for whole body is equal to equivalent dose of entire body.
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