Updating the ICRP human respiratory tract model

Michael Bailey*, E. Ansoborlo, R. A. Guilmette, F. Paquet

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)


The ICRP Task Group on Internal Dosimetry is developing new Occupational Intakes of Radionuclides (OIR) documents. Application of the Human Respiratory Tract Model (HRTM) requires a review of the lung-to-blood absorption characteristics of inhaled compounds of importance in radiological protection. Where appropriate, material-specific absorption parameter values will be given, and for other compounds, assignments to default Types will be made on current information. Publication of the OIR provides an opportunity for updating the HRTM in the light of experience and new information. The main possibilities under consideration relate to the two main clearance pathways. Recent studies provide important new data on rates of particle transport from the nasal passages, bronchial tree (slow phase) and alveolar region. The review of absorption rates provides a database of parameter values from which consideration can be given to deriving typical values for default Types F, M and S materials, and element-specific rapid dissolution rates.

Original languageEnglish
Pages (from-to)31-34
Number of pages4
JournalRadiation Protection Dosimetry
Issue number1-4
Publication statusPublished - 2007


Dive into the research topics of 'Updating the ICRP human respiratory tract model'. Together they form a unique fingerprint.

Cite this