France’s national metrology lab for ionizing radiation, LNHB (Laboratoire national Henri-Becquerel), is an active participant in the Doseo research center for radiotherapy technology at CEA LIST. LNHB conducts research, establishes and maintains reference measurements, and boasts cutting-edge measurement capabilities.
LNHB operates under the aegis of France’s national measurement and testing lab (LNE). Like any national metrology lab, LNHB has been tasked with implementing in a given field the International System of Units, SI, and giving users access to the metrological references they need within a strict framework of total traceability.
LNHB’s activities focus on:
The scope of LNHB’s activities covers radioactivity measurement (the Becquerel and its derivatives); neutron beam emission rate measurement (n.s-1); and dosimetry of photons and charged particles (Gray and Sievert).
Main R&D areas for radiotherapy at LHNB:
LNHB has reference radiation sources at Doseo: a 60Co source and linear medical-grade accelerator for external radiotherapy; 192Ir, 60Co and 125I sources for brachytherapy; a 60Co closed irradiator for high-dose irradiation in industrial settings and for sterilizing medical systems.
LNHB develops and uses a variety of primary dosimetric measurement techniques, such as calorimetry and ionometry, as well as secondary measurement techniques like chemical dosimetry, electron spin resonance (ESR), and thermoluminescence.
We also use Monte Carlo codes for the interactions between radiation and matter—Penelope, EGS, and MCNPX—to calculate beam energy spectra and accurately determine the correction factors.
CEA SACLAY DOSEO
Point courrier 181
91191 GIF SUR YVETTE CEDEX
of experience simulating the interaction of ionizing radiation for healthcare.
We develop image-processing algorithms for multimodal imaging.