Related Experiment Video
Updated: Dec 12, 2025
Automated 90Sr Separation and Preconcentration in a Lab-on-Valve System at Ppq Level
Published on: June 6, 2018
Radionuclide calibrator responses for 224Ra in solution and adsorbed on calcium carbonate microparticles
Elisa Napoli1, Jeffrey T Cessna2, Leticia Pibida2
1Physical Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD, 20899-8462, USA; Oncoinvent AS, Oslo, Norway; Institute of Clinical Medicine, University of Oslo, Oslo, Norway; Department of Radiation Biology, Institute for Cancer Research, Oslo University Hospital, Oslo, Norway.
Abstract:
A suspension of 224Ra adsorbed onto CaCO3 microparticles shows promise for α-therapy of intracavitary micro-metastatic diseases. To facilitate accurate activity administrations, geometry-specific calibration factors for commercially available reentrant ionization chambers (ICs) have been developed for 224RaCl2 solutions and 224Ra adsorbed onto CaCO3 microparticles in suspension in ampoules, vials, and syringes. Ampoules and vials give IC responses consistent with each other to <1%. Microparticles attenuation leads to a ≈1% to ≈2.5% reduction in response in the geometries studied.
More Related Videos
06:20Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
06:27Expression of Cementitious Pore Solution and the Analysis of Its Chemical Composition and Resistivity Using X-ray Fluorescence
Published on: September 23, 2018