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Effect of low-dose radiation pre-irradiation on postoperative local chest wall recurrence of breast cancer-A retrospective study.
PeerJ
January 2025
Department of Oncology, Cancer Center, Southern Medical University Hospital of Integrated Traditional Chinese and Western Medicine, Southern Medical University, Guangzhou, China.
Purpose: The purpose of this study was to determine the efficacy and safety of low-dose radiotherapy (LDR) for postoperative local chest wall recurrence of breast cancer.
Methods: The records of 52 patients with postoperative local chest wall recurrent breast cancer treated at our cancer center from January 2019 to December 2022. The t-test was used to compare the means of the LDR group and non LDR group.
Novel non-thermoluminescent CaSO:Dy dosimeters.
Appl Radiat Isot
November 2024
Departamento de Investigación en Física, Universidad de Sonora, Apartado Postal 5-088, Hermosillo, Sonora 83190, Mexico. Electronic address:
The non-thermoluminescence afterglow-based dosimetry performance of self-agglomerating pellet-shaped CaSO:Dy phosphors synthesized through a low-cost, environmentally friendly method is first reported. Thermoluminescence (TL) and afterglow (AG) were analyzed in samples exposed to beta particle irradiation in the dose range from 0.06 to 8.
View Article and Find Full Text PDFA high-resolution 3D radiochromic hydrogel photonic crystal dosimeter for clinical radiotherapy.
Mater Horiz
November 2024
College of Materials Science and Technology, Nanjing University of Aeronautics and Astronautics, Nanjing 211106, China.
The precise, rapid and direct visualization of 3D topographical dose in the target tissue that is crucial for effective radiation therapy remains a challenge. Herein, by combining hydrogel photonic crystals with film stacking or 3D printing, a 3D radiochromic dosimeter with a dose sensitivity of up to 10 nm Gy, a spatial resolution <50 μm, and the ability to detect complex 3D topographical dose distribution was proposed for clinical radiation dose verification. The sensitivity and response range of the dosimeter by radiation-induced polymer cross-linking and consequent Bragg wavelength shift can be tuned the solid content and extent of acrylate modification.
View Article and Find Full Text PDFCross-species conserved miRNA as biomarker of radiation injury over a wide dose range using nonhuman primate model.
PLoS One
November 2024
Division of Radioprotectants, Department of Pharmacology and Molecular Therapeutics, F. Edward Hébert School of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, United States of America.
Multiple accidents in nuclear power plants and the growing concerns about the misuse of radiation exposure in warfare have called for the rapid determination of absorbed radiation doses (RDs). The latest findings about circulating microRNA (miRNAs) using several animal models revealed considerable promises, although translating this knowledge to clinics remains a major challenge. To address this issue, we randomly divided 36 nonhuman primates (NHPs) into six groups and exposed these groups to six different radiation doses ranging from 6.
View Article and Find Full Text PDFImplementing a Phase II Quality Control Protocol for a High Precision 137 Cs Dosimetry Calibration Irradiator.
Health Phys
January 2025
Department of Nuclear Engineering and Radiological Sciences, University of Michigan, 2355 Bonisteel Boulevard, Ann Arbor, MI 48109-2104.
In medical physics, rigorous quality assurance and quality control protocols are vital for precise dose delivery applications. In many health physics applications, the allowable uncertainty for various processes is often greater than that of medical physics due to looser safety ties. This results in less demand for quality control and uncertainty analyses, since these may not be needed.
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