The air-kerma standards used for the measurement of medium-energy x rays were compared at the National Institute of Standards and Technology (NIST) and at the Bureau International des Poids et Mesures (BIPM). The comparison involved a series of measurements at the BIPM and the NIST using the air-kerma standards and two NIST reference-class transfer ionization standards. Reference beam qualities in the range from 60 kV to 300 kV were used. The results show the standards to be in agreement within the combined standard uncertainty of the comparison of 0.35 %.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4847580 | PMC |
| http://dx.doi.org/10.6028/jres.108.032 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Automatic image quality evaluation in digital radiography using a modified version of the IAEA radiography phantom allowing multiple detection tasks: A multi detection task IAEA radiography phantom.
J Appl Clin Med Phys
January 2025
Medical Physics Section, OHS Department, Hamad Medical Corporation, Doha, Qatar.
Purpose: To evaluate image quality (IQ) of for-processing (raw) and for-presentation (clinical) radiography images, under different exposure conditions and digital image post-processing algorithms, using a phantom that enables multiple detection tasks.
Methods: A modified version of the radiography phantom described in the IAEA Human Health Series No. 39 publication was constructed, incorporating six additional Aluminum (Al) targets of thicknesses both smaller and larger than the standard one.
The effect of Fiber Optic RealShape technology on perioperative and postoperative outcomes following complex abdominal aortic repair.
J Vasc Surg
December 2024
Division of Vascular and Endovascular Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA. Electronic address:
Background: Ongoing innovations in the minimally invasive management of complex abdominal aortic aneurysms, including physician-modified endografts (PMEG) and, more recently, Fiber Optic RealShape (FORS) technology, have allowed vascular surgeons to expand the surgical indications for and complexity of care to this multifaceted patient population. Prior analyses have demonstrated intraoperative advantages of Fiber Optic RealShape in the management of complex abdominal aortic aneurysms for lower total procedural radiation and cannulation tasks; however, few analyses have evaluated the technology's effect on perioperative and postoperative outcomes.
Methods: All PMEGs performed at our institution between 2020 and 2024 were reviewed retrospectively.
Results of the proficiency test for the Ka CMC of the SSDL-ININ Mexico, for diagnostic radiology IEC 61267:2005 and radiation protection ISO 4037:2019 X-ray beam qualities.
Radiat Prot Dosimetry
December 2024
Former staff of Secondary Standard Dosimetry Laboratory, Centro de Protección e Higiene de la Radiaciones, Carretera La Victoria II Km 2½, e/Monumental y Final, Guanabacoa, La Habana, 11100, Cuba.
The present work describes the results for the bilateral comparison between the Secondary Standards Dosimetry Laboratories of the Instituto Nacional de Investigaciones Nucleares (SSDL-ININ), Mexico, and the pilot laboratory, the Centro de Protección e Higiene de las Radiaciones (SSDL-CPHR), Cuba, for the realization of the air kerma (${\boldsymbol{K}}_{\boldsymbol{a}}$) quantity to: (i) diagnostic X-ray (DXR) IEC 61267:2005 beam qualities: RQR 5 RQR 9, RQT 8, and RQT 9 and (ii) radiation protection (RP) ISO 4037:2019 X-ray beam qualities: N60, N100, and W60, as well S-Cs for gamma radiation. The matched and characterized reference fields are realized at SSDL-ININ with a Toshiba E7252FX X-ray tube. In all cases, the ${\boldsymbol{K}}_{\boldsymbol{a}}$ measurements are traceable to PTB, except for S-Cs, traceable to ININ.
View Article and Find Full Text PDFEvaluation of plan quality, safety, and toxicity of brachytherapy for locally advanced cervical cancer in an Australian setting following changes in prescription and applicator design.
J Med Imaging Radiat Oncol
December 2024
Sydney West Radiation Oncology Network, Sydney, New South Wales, Australia.
Introduction: Chemoradiotherapy with MRI-guided brachytherapy boosts is the standard of care for locally advanced cervical cancer. Data from the RetroEMBRACE and EMBRACE I trials provide dose-response curves for target volumes and OAR. This study evaluated plan quality, safety and toxicity following escalation of the CTV_HR D90 prescription from 80-90 Gy to 85-95 Gy for two different applicator designs.
View Article and Find Full Text PDFDynamic coronary roadmap in percutaneous coronary intervention: a systematic review and meta-analysis.
BMC Cardiovasc Disord
November 2024
Yale University School of Medicine, New Haven, CT, USA.
Background: Contrast-induced acute kidney injury (CI-AKI) is one of the complications of percutaneous coronary intervention (PCI) with high financial burden and poor outcomes. Dynamic coronary roadmap (DCR) is one of the augmentation tools that can provide a dynamic clear coronary mapping with the potential to reduce contrast use and CI-AKI incidence. Herein, we aim to systematically investigate the studies that have assessed the effect of DCR on PCI outcomes.
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!