IMBA Professional Plus: a flexible approach to internal dosimetry

Abstract

IMBA (Integrated Modules for Bioassay Analysis) is a suite of software modules that implement the current ICRP biokinetic and dosimetric models for estimation of intakes and doses. The IMBA modules have gone through extensive quality assurance, and are now used for routine formal dose assessment by Approved Dosimetry Services throughout the UK. HPA has continued to develop the IMBA modules. In addition, several projects, sponsored by organisations both in the USA and in Canada, have resulted in the development of customised user-friendly interfaces (IMBA Expert 'editions'). These enable users not only to use the standard ICRP models, but also to change many of the parameter values from ICRP defaults, and to apply sophisticated data handling techniques to internal dose calculations. These include: fitting measurement data with the maximum likelihood method; using multiple chronic and acute intakes; and dealing with different data types, such as urine, faces and whole body simultaneously. These interfaces were improved further as a result of user-feedback, and a general 'off-the-shelf' product, IMBA Professional, was developed and made available in January 2004. A new version, IMBA Professional Plus, was released in April 2005, which is both faster and more powerful than previous software. The aim of this paper is to describe the capabilities of IMBA Professional Plus, and the mathematical methods used.

Interprétation des résultats de surveillance individuelle des expositions professionnelles au dioxyde d’uranium « Proposition de dosimétrie collective »

“…Les coefficients de dose et les fonctions d'excrétion résultant de ces modèles ont été calculés à l'aide du logiciel IMBA (Birchall et al, 2007) avec des valeurs de référence pour la taille des particules de l'aérosol (diamètre aérodynamique médian en activité, DAMA = 5 µm ; écart-type géométrique, σ g DAMA = 2,5 (ICRP, 1994)). Une revue de la littérature a permis de déterminer des paramètres d'absorption médians pour l'UO 2 (Davesne et al, en préparation) :…”

Radiation Exposure Case Management After Incorporation of Radionuclides

“…The practical calculations were performed with the IMBA code (Birchal et al 2007). This code was used to calculate theoretical retention and excretion functions This was done for the all pathways mentioned above, for selected relevant radionuclides, for the measurement methods appropriate for the various radionuclides, and for various times between incorporation and measurement.…”

Investigation of produced waters radioactivity of oil and gas deposits in the Dnieper-Donets province

“…The content of radionuclides of α-emitters was determined using separate radiochemical techniques [15]. Preliminary preparation of sediment, silt and soil samples before radiochemical analysis consisted of the following:…”