Annals of ICRP, v. 26, No 3/4, Pergamon, 1996. 205 p.
This report summarises the work of a Joint Task Group on Dose-Related Quantities for Radiological Protection against External Radiation established in the latter part of 1991. This group was appointed by both the International Commission on Radiological Protection (ICRP) and the International Commission on Radiation Units and Measurements (ICRU).
The purpose of this report is to present conversion coefficients for protection and operational dosimetric quantities and to examine their relationships. Conversion coefficients have been produced for idealised irradiation geometries, monoenergetic radiations in various anthropomorphic models (mathematical models), and measurement phantoms. The data given here are intended to provide the basis for comparison between the protection and operational quantities and to examine the impact of the new recommendations on these quantities. The review of data by the Joint Task Group provides an authoritative and stable data set for application to dosimetry in radiological protection.
INTRODUCTION
QUANTITIES USED IN RADIOLOGICAL PROTECTION FOR EXTERNAL RADIATION
Introduction
The Evolution of Quantities for Radiological Protection against External Radiation
Absorbed Dose
Radiation Weighting
Radiological Protection Quantities
Operational Quantities
DETERMINATION OF ABSORBED DOSE DISTRIBUTIONS IN THE HUMAN BODY AND IN ANTHROPOMORPHIC AND OTHER MODELS
Introduction
Radiation Field
Models and Phantoms of the Human Body
Models of Calculating Absorbed Dose Distributions
Irradiation Geometries
CONVERSION COEFFICIENTS
Introduction
General
Conversion Coefficients for Photons
Conversion Coefficients for Neutrons
Conversion Coefficients for Electrons
RELATIONSHIPS BETWEEN QUANTITIES
Introduction
Changes in the Protection and Operational Quantities
Relationships between the Protection and Operational Quantities: The Performance of the Operational Quantities
General Conclusions
REFERENCES
ANNEXES
FIGURES
TABLES
Conversion coefficients for air kerma per unit fluence of monoenergetic photons
Bladder absorbed dose per unit air kerma
Bone (red marrow) absorbed dose per unit air kerma
Bone (surface) absorbed dose per unit air kerma
Breast absorbed dose per unit air kerma
Colon absorbed dose per unit air kerma
Gonads, female (ovaries) absorbed dose per unit air kerma
Gonads, male (testes) absorbed dose per unit air kerma
Gonads absorbed dose (average of male and female) per unit air kerma
Liver absorbed dose per unit air kerma
Lung absorbed dose per unit air kerma
Oesophagus absorbed dose per unit air kerma
Remainder absorbed dose per unit air kerma
Skin absorbed dose per unit air kerma
Stomach absorbed dose per unit air kerma
Thyroid absorbed dose per unit air kerma
Effective dose per unit air kerma
Eye lens absorbed dose per unit air kerma
Thymus absorbed dose per unit air kerma
Uterus absorbed dose per unit air kerma
Conversion coefficients for ambient dose equivalent and directional dose equivalent from photon fluence and air kerma
Conversion coefficients for directional dose equivalent from air kerma and angular dependence factors
Conversion coefficient for directional dose equivalent, from air kerma and angular dependence factors
Conversion coefficient for Hp(10) in an ICRU slab from air kerma and angular-dependence factors
Conversion coefficients for Hp(0.07) in an ICRU slab from air kerma and angular-dependence factors up to 75°
Bladder absorbed dose per unit neutron fluence
Bone (red marrow) absorbed dose per unit neutron fluence
Bone (surface) absorbed dose per unit neutron fluence
Breast (female) absorbed dose per unit neutron fluence
Colon absorbed dose per unit neutron fluence
Gonads, female (ovaries) absorbed dose per unit neutron fluence
Gonads, male (testes) absorbed dose per unit neutron fluence
Gonads absorbed dose per unit neutron fluence
Liver absorbed dose per unit neutron fluence
Lung absorbed dose per unit neutron fluence
Oesophagus absorbed dose per unit neutron fluence
Remainder absorbed dose per unit neutron fluence
Skin absorbed dose per unit neutron fluence
Stomach absorbed dose per unit neutron fluence
Thyroid absorbed dose per unit neutron fluence
Effective dose per unit neutron fluence
Ambient and personal dose equivalent per unit neutron fluence
Conversion coefficients for organ absorbed dose and effective dose from electron fluence
Reference conversion coefficients for directional dose equivalents from electron fluence
Reference values of the angular factor at a depth of 0.07 mm
Reference values of the angular factor at a depth of 3 mm
Reference values of the angular factor at a depth of 10 mm
