Current activities in the ICRP concerning estimation of radiation doses to patients from radiopharmaceuticals for diagnostic use

• Published in: International Conference on Image Optimisation in Nuclear Medicine (OptiNM),Cyprus,2011-03-23 - 2011-03-26 Cyprus,2011-03-23 - 2011-03-26, 2011-01, Vol.317 (1), p.012008-6
• Main Authors: Mattsson, S, Johansson, L, Leide-Svegborn, S, Liniecki, J, Nosske, D, Riklund, K, Stabin, M, Taylor, D
• Format: Article
• Language: English
• Subjects: Choline; Clinical Medicine; Covering; Diagnostic systems; Documents; Dosimetry; Estimates; Fluorine isotopes; Imaging; Imaging techniques; Iodine 131; Klinisk medicin; Literature reviews; Medical and Health Sciences; Medical imaging; Medicin och hälsovetenskap; Nuclear medicine; Organs; Patients; Physics; Positron emission; Radiation dosage; Radiologi och bildbehandling; Radiology, Nuclear Medicine and Medical Imaging; Tomography
• ISSN: 1742-6596; 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/317/1/012008

A Task Group within the ICRP Committees 2 and 3 is continuously working to improve absorbed dose estimates to patients investigated with radiopharmaceuticals. The work deals with reviews of the literature, initiation of new or complementary studies of the biokinetics of a compound and dose estimates. Absorbed dose calculations for organs and tissues have up to now been carried out using the MIRD formalism. There is still a lack of necessary biokinetic data from measurements in humans. More time series obtained by nuclear medicine imaging techniques such as whole-body planar gamma-camera imaging, SPECT or PET are highly desirable for this purpose. In 2008, a new addendum to ICRP Publication 53 was published under the name of ICRP Publication 106 containing biokinetic data and absorbed dose information to organs and tissues of patients of various ages for radiopharmaceuticals in common use. That report also covers a number of generic models and realistic maximum models covering other large groups of substances (e.g. " super(123)I-brain receptor substances"). Together with ICRP Publication 80, most radiopharmaceuticals in clinical use at the time of publication were covered except the radioiodine labeled compounds for which the ICRP dose estimates are still found in Publication 53. There is an increasing use of new radiopharmaceuticals, especially PET-tracers and the TG has recently finished its work with biokinetic and dosimetric data for super(18)F-FET, super(18)F-FLT and super(18)F-choline. The work continues now with new data for super(11)C-raclopride, super(11)C-PiB and super(123)I-ioflupan as well as re-evaluation of published data for super(82)Rb-chloride, super(18)F-fluoride and radioiodide. This paper summarises published ICRP-information on dose to patients from radiopharmaceuticals and gives some preliminary data for substances under review.