Results 41 to 50 of about 128,460 (250)

Non-vascular interventional procedures: effective dose to patient and equivalent dose to abdominal organs by means of dicom images and Monte Carlo simulation [PDF]

, 2015
This study evaluates X-ray exposure in patient undergoing abdominal extra-vascular interventional procedures by means of Digital Imaging and COmmunications in Medicine (DICOM) image headers and Monte Carlo simulation.
Cannavale, Alessandro, D'Adamo, Alessandro, Di Castro, E. 4., Donnarumma, Raffaella, Fanelli, F, Insero, T, Longo, Mariaconcetta, Lucatelli, Pierleone, Marchioni, C, Salvatori, Fm   +9 more
core   +1 more source

Inhibition of SIRT7 Overcomes Radioresistance in Pancreatic Neuroendocrine Tumors by Reactivating MEN1 Expression

Advanced Science, EarlyView.
Pancreatic neuroendocrine tumors frequently silence MEN1 through epigenetic mechanisms. Here, SIRT7 recruits DNMT1 to the MEN1 promoter, drives hypermethylation, and enhances DNA repair. Inhibiting SIRT7 restores MEN1, reduces MRN complex abundance, impairs double‐strand break repair, and sensitizes PanNET models to radiation, supporting SIRT7 as a ...
Jianyun Jiang, Yan Wang, Yi Qin, Luohai Chen, Xiaowu Xu, Guixiong Fan, Desheng Jing, Miaoyan Wei, Xianjun Yu, Junfeng Xu, Shunrong Ji, Jie Chen   +11 more
wiley   +1 more source

The importance of quality management system to certify radioprotection professionals in the medical field

Brazilian Journal of Radiation Sciences, 2023
Certifying professionals in radioprotection (RP), according to the requirements and qualifications established in current Brazilian legislation, ensures that procedures and practices in radiology, radiotherapy and nuclear medicine be performed based on ...
C. P. V. C. Luz, J. U. Delgado, L. V. Sá, Dayana D. A. Conceição   +3 more
doaj   +1 more source

Photonuclear Population of 229m,gTh in Th‐Doped Crystals Toward Nuclear Clock Development

Advanced Science, EarlyView.
This study demonstrates a novel photonuclear approach for producing the nuclear clock isomer 229mTh in thorium‐doped crystals, overcoming current supply limitations. Through cross‐section calculations and Monte Carlo simulations, we identify optimal crystal materials and irradiation conditions, achieving high signal‐to‐noise ratios.
Hao‐Yang Lan, Di Wu, Mei‐Zhi Wang, Zhong‐Yi Chen, Jian‐Feng Lv, Yu‐Hui Xia, Zhe‐Nan Wang, Wen Luo, Xin‐Lu Xu, Xue‐Qing Yan   +9 more
wiley   +1 more source

Absorbed radiation dosimetry of the D3-specific PET radioligand [18F]FluorTriopride estimated using rodent and nonhuman primate [PDF]

, 2016
[(18)F]FluorTriopride ([(18)F]FTP) is a dopamine D(3)-receptor preferring radioligand with potential for investigation of neuropsychiatric disorders including Parkinson disease, dystonia and schizophrenia. Here we estimate human radiation dosimetry for [(
Bognar, Christopher, Flores, Hubert P, Karimi, Morvarid, Laforest, Richard, Li, Aixiao, Mach, Robert H, Moerlein, Stephen M, Perlmutter, Joel S, Tu, Zhude, Xu, Jinbin   +9 more
core   +1 more source

Smart Nanotechnologies for Multimodal Neuromodulation and Brain Interfacing

Advanced Science, EarlyView.
Recent advances in smart nanotechnologies are expanding the toolbox for brain interfacing, from wireless neuromodulation and high‐resolution sensing to targeted delivery within the central nervous system. By combining responsive nanomaterials with bioinspired design, these platforms enable multimodal interactions with neurons and glia, while also ...
Tommaso Curiale, Marie Celine Lefevre, Alessio Carmignani, Maria Cristina Ceccarelli, Matteo Battaglini, Attilio Marino, Gianni Ciofani   +6 more
wiley   +1 more source

Tb3+‐Doped Glass‐Ceramic Scintillating Plates and Fibers for X‐Ray Imaging and Flexible Detection

Advanced Science, EarlyView.
A Tb3+‐doped glass‐ceramic scintillator, with controlled Ba2GdF7 nanocrystal precipitation, was developed through a rational design strategy guided by phase diagrams and molecular dynamics simulations. The obtained material exhibits a high light yield of 41 800 photons/MeV (418%/BGO), a spatial resolution of 25.3 lp/mm, and exceptional thermal ...
Songxuan Liu, Ping Zhang, Panpan Li, Yao Ji, Zhiguo Xia, Weichao Wang, Qinyuan Zhang   +6 more
wiley   +1 more source

Recent improvements in X-ray spectrometry measurements performed at the MADERE facility dedicated to reactor dosimetry requirements [PDF]

EPJ Web of Conferences
CEA/Cadarache operates the MADERE facility dedicated to measuring the activity of radionuclides generated during the irradiation of specific dosimeters made of hyper-pure materials.
Tisseur David, Domergue Christophe, Destouches Christophe, Philibert Hervé, Pepino Alexandra, Bonora Jonathan, Thiollay Nicolas, Lépy Marie Christine, Riffaud Jonathan, Hernández-Elvira Víctor   +9 more
doaj   +1 more source

Highly Efficient Extraction of 212 Pb/212Bi from the Decay Chain of 232Th‐Based on Anion Exchange in Bromide Medium

Advanced Science, EarlyView.
This work provides an effective strategy for selectively extracting 212Pb and 212Bi from the decay chain of 232Th as well as its mechanism illustration. Using the novel strategy, 2.07 MBq of 212Pb is successfully separated from 232Th and its daughters, which enables the supply of 212Pb/212Bi directly from the abundant natural thorium resource to be ...
Lifeng Chen, Wannian Feng, Yuezhou Wei, Xuexiang He, Shaoying Wang, Zhongyuan Zhou, Qiang Wu, Ningchao Zheng, Xiangbiao Yin, Wenlong Li, Lingling Su, Shunyan Ning   +11 more
wiley   +1 more source

Decontamination of equipment with oil and gas NORM: the need for internal individual monitoring

Brazilian Journal of Radiation Sciences
In the oil field, Naturally Occurring Radioactive Material - NORM is present in petroleum-forming rocks and this is related to the presence of radioactive decay series of 238U and 232Th, mainly the daughter radionuclides 226Ra and 228Ra.
A. C. C. S. Ribeiro, W. O. Sousa, F. C. A. Silva   +2 more
doaj   +1 more source