Results 61 to 70 of about 3,228 (172)

Doses associated with interventional radiology patients: a retrospective analysis in cerebral angiography

open access: yesBrazilian Journal of Radiation Sciences
Interventional Radiology (IR) plays a major role in neurology. It has several advantages, such as avoiding higher risk surgeries and reducing hospital stay.
Raquel Nascimento Assimos   +1 more
doaj   +1 more source

Characterization of a new radiochromic film (LD-V1) using mammographic beam qualities

open access: yesZeitschrift für Medizinische Physik
Purpose: Radiochromic film (RCF) is a detector that can obtain a two-dimensional dose distribution with high resolution; it is widely used in medical and industrial fields. Several types of RCFs exist based on their application.
Erika Nakajima, Hitoshi Sato
doaj   +1 more source

MTS-6 detectors calibration by using 239Pu-Be neutron source

open access: yesMedycyna Pracy, 2017
Background: Thermoluminescent detectors, type MTS-6, containing isotope 6Li (lithium) are sensitive in the range of thermal neutron energy; the 239Pu-Be (plutonium-and-beryllium) source emits neutrons in the energy range from 1 to 11 MeV. These seemingly
Małgorzata Wrzesień   +2 more
doaj   +1 more source

Monte Carlo modeling of the field size dependency for thin window plane‐parallel chambers in kilovoltage X‐ray reference dosimetry

open access: yesMedical Physics, Volume 53, Issue 5, May 2026.
Abstract Background Clinical dosimetry for kV X‐ray radiotherapy beams requires calibrated ionization chambers. When the clinical field size differs from the field size used for chamber calibration, in‐air measurements result in a different magnitude of scatter from the detector stem or body housing affecting the sensitive volume.
Fayz Kadeer   +2 more
wiley   +1 more source

Development of a practical and high‐speed deep learning‐based dose calculation model in boron neutron capture therapy for head and neck cancer

open access: yesMedical Physics, Volume 53, Issue 5, May 2026.
Abstract Background In boron neutron capture therapy (BNCT), Monte Carlo (MC) dose calculations are commonly employed because of the complicated neutron reactions. However, MC dose calculations are generally time‐consuming. Recently, deep learning (DL)‐based dose prediction/calculation has attracted increasing attention; however, the applications of DL
Ryohei Kato   +6 more
wiley   +1 more source

Research on the Absolute Measurement Methodology of Air Kerma for N-60~N-350 X-Rays

open access: yesJournal of Isotopes
With the rapid development of nuclear technology applications,the demand for medium- to high-energy X-rays has been increasing substantially,accompanied by urgent requirements for absolute measurement capabilities and measurement ranges of air kerma ...
Yurun WANG   +4 more
doaj   +1 more source

Important comments on KERMA factors and DPA cross-section data in ACE files of JENDL-4.0, JEFF-3.2 and ENDF/B-VII.1

open access: yesEPJ Web of Conferences, 2017
We have studied reasons of differences of KERMA factors and DPA cross-section data among nuclear data libraries. Here the KERMA factors and DPA cross-section data included in the official ACE files of JENDL-4.0, ENDF/B-VII.1 and JEFF-3.2 are examined in ...
Konno Chikara   +4 more
doaj   +1 more source

Pulsed Field Ablation for Atrial Fibrillation in Patients With Obesity: Procedural and Clinical Outcomes

open access: yesPacing and Clinical Electrophysiology, Volume 49, Issue 5, Page 636-643, May 2026.
ABSTRACT Background Procedural and clinical outcomes in patients with obesity undergoing catheter ablation for atrial fibrillation (AF) have been mixed. Clinical data in the context of pulsed field ablation (PFA) are currently limited in this patient cohort.
Francis J. Ha   +6 more
wiley   +1 more source

The Ratio between Absorbed Dose, Kerma and Ionization Kerma for Small-size Fields

open access: yesMedical Radiology and radiation safety, 2019
Purpose: Research of the relationships between spatial distributions in water of the main dosimetric values, namely the absorbed dose, kerma and ionization kerma, for small-size fields with a circular cross section created by divergent beams of bremsstrahlung spectrum with a maximum energy of 6 MeV. Material and methods: Using the Monte-Carlo ...
M. Kolyvanova   +2 more
openaire   +1 more source

Comparison of the NIST and ENEA air kerma standards

open access: yesJournal of Research of the National Institute of Standards and Technology, 1998
A comparison was made between the National Institute of Standards and Technology (NIST) and Ente per le Nuove Tecnologie l'Energia e l'Ambiente (ENEA) air kerma standards for medium energy x rays and 60Co gamma rays. The comparison took place at ENEA in June 1994. Two different transfer chambers from NIST were used for the comparison.
Laitano, R. F.   +2 more
openaire   +2 more sources

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