The results of the development of a radiographic installation that allows to control the size of the internal elements of HPGe detectors' cryostats for simulation by Monte Carlo method, are presented. Calibration and assessment of image quality value of the developed radiographic installation were carried out in accordance with ISO Standards 19232-1 and 19232-5. Simulation of the HPGe detector's registration efficiency in the range of 50 keV-3 MeV with the MCC-MT program showed that the discrepancy between the calculated and experimental results when adjusting the detector model using radiological measurement data does not exceed 3% in geometry for point sources and 5% for the Eu-152 source in the Marinelli beaker geometry.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.apradiso.2023.110837 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Evaluation of dose calculation method with a combination of Monte Carlo method and removal-diffusion equation in heterogeneous geometry for boron neutron capture therapy.
Biomed Phys Eng Express
January 2025
Institute for Integrated Radiation and Nuclear Science, Kyoto University, 2-1010 Asashiro-nishi, Kumatori-cho, Sennan-gun, Osaka, 590-0494, JAPAN.
Clinical research in boron neutron capture therapy (BNCT) has been conducted worldwide. Currently, the Monte Carlo (MC) method is the only dose calculation algorithm implemented in the treatment planning system for the clinical treatment of BNCT. We previously developed the MC-RD calculation method, which combines the MC method and the removal-diffusion (RD) equation, for fast dose calculation in BNCT.
View Article and Find Full Text PDFA brief introduction to the diffusion Monte Carlo method and the fixed-node approximation.
J Chem Phys
December 2024
Dipartimento di Fisica Ettore Pancini, Università di Napoli Federico II, Monte S. Angelo, I-80126 Napoli, Italy.
Quantum Monte Carlo (QMC) methods represent a powerful family of computational techniques for tackling complex quantum many-body problems and performing calculations of stationary state properties. QMC is among the most accurate and powerful approaches to the study of electronic structure, but its application is often hindered by a steep learning curve; hence it is rarely addressed in undergraduate and postgraduate classes. This tutorial is a step toward filling this gap.
View Article and Find Full Text PDFDue to its heavy reliance on convenience samples (CSs), developmental science has a generalizability problem that clouds its broader applicability and frustrates replicability. The surest solution to this problem is to make better use, where feasible, of probability samples, which afford clear generalizability. Because CSs that are homogeneous on one or more sociodemographic factor may afford a clearer generalizability than heterogeneous CSs, the use of homogeneous CSs instead of heterogeneous CSs may also help mitigate this generalizability problem.
View Article and Find Full Text PDFBiomarkers.
Alzheimers Dement
December 2024
Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
Background: Plasma tau phosphorylated at threonine 231 (p-tau231) is a promising novel biomarker of emerging Alzheimer's disease (AD) pathology. We aimed to characterize cross-sectional and longitudinal plasma p-tau231 measurements and estimated ages of biomarker onset in an exceptionally large number of presenilin (PSEN1) E280A (Glu280Ala) mutation carriers and age-matched non-carriers from the Colombian autosomal dominant Alzheimer's disease kindred.
Method: We included a cohort of 722 PSEN1 E280A mutation carriers (mean age 36.
Biomarkers.
Alzheimers Dement
December 2024
Laboratory of Clinical Investigation, National Institute on Aging, Intramural Research Program, Baltimore, MD, USA.
Background: In 2016, we introduced the Bayesian Monte Carlo analysis of multicomponent-driven equilibrium observation of T and T (BMC-mcDESPOT) MRI method for myelin water fraction (MWF) mapping, a surrogate of myelin content. While BMC-mcDESPOT has been extensively applied to study brain aging, dementias, and risk factors influencing myelination, it still requires a lengthy acquisition time (∼17 min) which hampers its integration in clinical studies and trials. In this study, we aim to accelerate the BMC-mcDESPOT method for whole brain, high-resolution, MWF mapping within clinically feasible scan time of ∼6 min.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!