04 Protection
Effective dose (single tissue)
E = w_T H_T for one tissue; sum w_T = 1 over the whole body.
Listen
Listen · English
Simulation
Effective dose (single tissue) — Change the numbers; the scene follows.
Where it works
Treatment vault
Primary barrier
In the bunker maze and barriers — time, distance, TVL, WUT, and weekly controlled-area dose.
Open this machineFormula
Typical values
Variables
Results
E
Effective-dose contribution
1.2mSv
Explanation
What it means
Effective dose E = Σ w_T H_T folds organ doses into one number for stochastic risk. ICRP 103 weights: 0.12 (colon, lung, stomach, breast, remainder, red marrow), 0.08 gonads, 0.04 bladder/liver/thyroid/oesophagus, 0.01 brain/skin/salivary/bone surface. This is a working relation in Radiation protection.
Where it is used
Clinically it sits on the Treatment vault — Primary barrier. In the bunker maze and barriers — time, distance, TVL, WUT, and weekly controlled-area dose. Protection equations are the wall, the occupancy factor, and the badge: time, distance, shielding, and WUT. They turn a room into a legal design.
Treatment vault · Open this machineHow to use it
This calculator does one tissue: E_contrib = w_T H_T. Sum several organs (plus remainder) for a full E. Useful when a CT organ-dose report lists H_T. Change one input and watch the curve and the simulation follow.
Symbols
- H_TTissue equivalent dose10 mSv
- w_TTissue weighting factor0.12
Worked example
A typical case from the default values: H_T = 10 mSv (Tissue equivalent dose); w_T = 0.12 (Tissue weighting factor). Substituting into the relation gives E = 1.2 mSv. These are teaching numbers — align them with your machine.
Typical values give
- E = 1.2mSv
Where it comes from
The displayed formula is the working relation. E = w_T H_T for one tissue; sum w_T = 1 over the whole body. Usual reference: ICRP 103. Derive it in the specialty lesson, then return here to pin the numbers.
Reference: ICRP 103
Assumptions & limits
Not for a named individual (no sex-, age- or size-specific risk). Remainder is a specified set of organs, not ‘whatever is left’ ad hoc.
Pitfalls
Tenth-value layers are for the broad beam in that material and that energy — not a photocopy from another bunker. Occupancy T is not a guess; it is a use pattern. Inverse-square fails against a large scatter source. Not for a named individual (no sex-, age- or size-specific risk). Remainder is a specified set of organs, not ‘whatever is left’ ad hoc.
Keep this
Time, distance, shielding — in that order — then calculate the wall. Not for a named individual (no sex-, age- or size-specific risk). Remainder is a specified set of organs, not ‘whatever is left’ ad hoc.
In this specialty