# Tissue weighting factor

The factor, [math]w_T[/math], by which the equivalent dose in a tissue or organ T is weighted to represent the relative contribution of that tissue or organ to the total, stochastic health detriment resulting from uniform irradiation of the body. It is weighted such that [math]\sum\limits_T w_T = 1[/math]

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## Previous glossary entries

### from ICRP Publication 139, 2018

A factor by which the equivalent dose in a tissue or organ T is weighted to represent the relative contribution of that tissue or organ to the total health detriment resulting from uniform irradiation of the body. It is weighted such that [math]\sum\limits_T w_T = 1[/math]

### from ICRP Publication 133, 2016

The factor by which the equivalent dose to an organ or tissue T is weighted to represent the relative contribution of that organ or tissue to overall radiation detriment from stochastic eﬀects.

### from ICRP Publication 131, 2015

The factor by which the equivalent dose in a tissue or organ T is weighted to represent the relative contribution of that tissue or organ to the total health detriment resulting from uniform irradiation of the body.

### from ICRP Publication 130, 2015

The factor by which the equivalent dose to an organ or tissue T is weighted to represent the relative contribution of that organ or tissue to overall radiation detriment from stochastic eﬀects. It is deﬁned such that [math]\sum\limits_T w_T = 1[/math]

### from ICRP Publication 127, 2014

The factor by which the equivalent dose in a tissue or organ T is weighted to represent the relative contribution of that tissue or organ to the total health detriment resulting from uniform irradiation of the body. It is weighted such that [math]\sum\limits_T w_T = 1[/math]

### from ICRP Publication 119, 2012

The factor by which the equivalent dose in a tissue or organ is weighted to represent the relative contributions of that issue or organ to the total detriment resulting from uniform irradiation of the body.

### from ICRP Publication 116, 2010

The factor by which the equivalent dose in an organ or tissue T is weighted to represent the relative contribution of that organ or tissue to overall radiation detriment from stochastic effects. It is defined such that [math]\sum\limits_T w_T = 1[/math]

### from ICRP Publication 103, 2007 & ICRP Publication 110, 2008 & ICRP Publication 118, 2012

The factor by which the equivalent dose in a tissue or organ T is weighted to represent the relative contribution of that tissue or organ to the total health detriment resulting from uniform irradiation of the body. It is weighted such that [math] \sum\limits_T w_T = 1[/math]