Effective Dose Calculator for body and collar dosimeter readings:

Using Ontario Regulations 861 Tissue Weighting Factors:
Instructions:
Enter Body reading: Enter Collar reading:
Organ/Tissue Group Tissue Weighting Factor Fraction of organ/tissue receiving shielded dose
(e.g. body dose reading)		 Fraction of organ/tissue receiving unshielded dose
(e.g. collar dose reading)
Thyroid:
Lung:
Breast:
GI Tract:
Gonads:
RBM:
Bone:
TWF normalized total used in calculation:
The EDE is milli-Sieverts.
DISCLAIMER: This is an educational tool. Different legal jurisdictions may have different means by which effective dose must be calculated. Use at your own risk.

* Regulation 861 under the Ontario Occupational Health and Safety Act names several organ or tissue groups that must be included in the Effective Dose calculation, leaving one "free" other organ that must be chosen to complete the calculation. For the purposes of this calculator, a miscellaneous body trunk organ has been chosen. The original version of this calculator treated the head as this organ but was an overestimation of the radiation sensitivity of that area. Head sensitivity IN THIS EFFECTIVE DOSE MODEL is accounted for by the red bone marrow (RBM) and bone fractons in the head and other unshielded areas. Other effective dose models take greater account of exposure to the head due to slight brain and salivary gland sensitivity and these are are likely more accurate.