Results 1 to 10 of about 25,556 (182)

A recommendation for revised dose calibrator measurement procedures for 89Zr and 124I. [PDF]

PLoS ONE, 2014
Because of their chemical properties and multiday half lives, iodine-124 and zirconium-89 are being used in a growing number of PET imaging studies. Some aspects of their quantitation, however, still need attention.
Bradley J Beattie, Keith S Pentlow, Joseph O'Donoghue, John L Humm   +3 more
doaj   +2 more sources

Comparison of methods to determine accurate dose calibrator activity measurements [PDF]

Journal of Experimental & Clinical Cancer Research, 2008
Background In nuclear medicine, liquid radiopharmaceuticals for diagnostic or therapeutic purposes are administered to patients by using various types of syringes with different volumes.
d'Angelo Annelisa, Nocentini Sandro, Fazio Aldo, D'Andrea Marco, De Felice Pierino, Benassi Marcello, Strigari Lidia, Ceccatelli Alessia   +7 more
doaj   +2 more sources

Dose Calibrator Linearity Testing: Radioisotope 99mTc or 18F? An Alternative for Reducing Costs in Nuclear Medicine Quality Control

World Journal of Nuclear Medicine, 2015
Dose calibrator linearity testing is indispensable for evaluating the capacity of this equipment in measuring radioisotope activities at different magnitudes, a fundamental aspect of the daily routine of a nuclear medicine department, and with an impact ...
José Willegaignon, Marcelo Sapienza, George Coura-Filho, Alexandre Garcez, Carlos Alves, Marissa Cardona, Ricardo Gutterres, Carlos Buchpiguel   +7 more
doaj   +2 more sources

Design and performance of the micro-dose calibrator. [PDF]

Phys Med Biol, 2018
A new class of dose calibrator called a micro-dose calibrator, designed to measure radioactivity rates in the range between 1 kBq up to 370 kBq, has been designed and an 8 NaI(Tl)/photo multiplier tube (PMT) module prototype built to evaluate its performance.
Adler S, Choyke P.
europepmc   +3 more sources

Discordance between 90Y-PET/CT(MR)-estimated activity and dose calibrator measured administered activity: an international study in SIRT patients treated with resin and glass microspheres [PDF]

EJNMMI Physics
Purpose Therapeutic administration of 90Y-loaded microspheres is routinely used for primary and secondary liver tumours. For activity-based therapeutic prescription the activity must be within 10% of the intended activity.
Thomas Carlier, Silvano Gnesin, Justin K. Mikell, Maurizio Conti, John O. Prior, Niklaus Schaefer, Maria del Sol Pérez Lago, Clément Bailly, Yuni K. Dewaraja, Thiago V. M. Lima   +9 more
doaj   +2 more sources

Dose calibrator linearity test: (99m)Tc versus (18)F radioisotopes. [PDF]

Radiol Bras, 2015
Objective: The present study was aimed at evaluating the viability of replacing 18F with 99mTc in dose calibrator linearity testing. Materials and Methods: The test was performed with sources of 99mTc (62 GBq) and 18F (12 GBq) whose activities were measured up to values lower than 1 MBq. Ratios and deviations between experimental and theoretical 99mTc
Willegaignon J, Sapienza MT, Coura-Filho GB, Garcez AT, Alves CE, Cardona MA, Gutterres RF, Buchpiguel CA.   +7 more
europepmc   +6 more sources

Establishing measurement traceability for quantitative SPECT imaging [PDF]

EJNMMI Physics
Background Single Photon Emission Computed Tomography (SPECT) is increasingly used as a quantitative modality, especially in the context of Molecular Radiotherapy, where the measurements are used as input to absorbed dose calculations for patient ...
Andrew P. Robinson, Kelley M. Ferreira, Warda Heetun, Manuel Bardiès, Ana M. Denis-Bacelar, Andrew J. Fenwick, Michael Lassmann, Jill Tipping, Johannes Tran-Gia   +8 more
doaj   +2 more sources

Co-57-based intercomparison of TLC scanners and dose calibrators for low-activity radiochemical purity assessment in radiopharmaceutical quality control [PDF]

EJNMMI Radiopharmacy and Chemistry
Background Thin layer chromatography scanners and dose calibrators are commonly used to assess radiochemical purity of radiopharmaceutical preparations. Strict quality assurance programs surveyed by regulatory bodies exist for dose calibrators, but they ...
Marietta Straub, Michel Leresche, Claude Pilloud, Rolf Hesselmann, Nicolas Stritt, Ruslan Cusnir   +5 more
doaj   +2 more sources

Ionizing radiation metrology at the service of health: quality control of radiopharmaceutical dose calibrators in nuclear medicine unit -accurarcy, reproducibility and linearity tests- [PDF]

E3S Web of Conferences, 2022
Ensuring the effective use of a dose calibrator used for the practice of nuclear medicine, and the injection of the correct dose to the patient is the subject of a long traceable calibration chain, which serves to establish the relationship between the ...
Belhaj Omaima Essaad, Belhaj Siham, Elkhoukhi Tahar, Rabie Mohamed, Elmahjoub Chakir, Bentaleb Naoual, Bellahsaouia Meryem, Boukhal Hamid   +7 more
doaj   +1 more source

Evaluation of radiochemical purities of some radiopharmaceuticals in Shiraz Namazi teaching hospital [PDF]

Trends in Pharmaceutical Sciences, 2015
Radiopharmaceuticals are a special group of drugs since many of them are eventually prepared in the hospital and the nuclear medicine department is therfore responsible for meeting quality criteria such as sterility, radionuclide, radiochemical and ...
Hossein Sadeghpour, Mehrosadat Alavi, Majid Shahedi, Seyed Mohammad Entezarmahdi, Amirhossein Sakhteman   +4 more
doaj   +5 more sources