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Статті в журналах з теми "Imagerie 3-Gamma"
Liu, Xiao, Hui Liu, Li Cheng, Jing Wu, Tianwei Bao, Rutao Yao, and Yaqiang Liu. "A 3-dimensional stationary cascade gamma-ray coincidence imager." Physics in Medicine & Biology 66, no. 22 (November 5, 2021): 225001. http://dx.doi.org/10.1088/1361-6560/ac311b.
Повний текст джерелаAdugna, Tesfaye, Wenbo Xu, and Jinlong Fan. "Comparison of Random Forest and Support Vector Machine Classifiers for Regional Land Cover Mapping Using Coarse Resolution FY-3C Images." Remote Sensing 14, no. 3 (January 25, 2022): 574. http://dx.doi.org/10.3390/rs14030574.
Повний текст джерелаLee, Wonho, Ajin Jo, and Changyeon Yoon. "Multiple Modality $\gamma$-Ray Imager Using LaCl$_{3}$(Ce) Scintillators With Active Collimation Method." IEEE Transactions on Nuclear Science 57, no. 3 (June 2010): 1396–403. http://dx.doi.org/10.1109/tns.2010.2043539.
Повний текст джерелаSekandari, Milad, and Amin Beiranvand Pour. "Fuzzy Logic Modeling for Integrating the Thematic Layers Derived from Remote Sensing Imagery: A Mineral Exploration Technique." Environmental Sciences Proceedings 6, no. 1 (February 25, 2021): 8. http://dx.doi.org/10.3390/iecms2021-09349.
Повний текст джерелаCona, Filippo, Melissa Zavaglia, Laura Astolfi, Fabio Babiloni, and Mauro Ursino. "Changes in EEG Power Spectral Density and Cortical Connectivity in Healthy and Tetraplegic Patients during a Motor Imagery Task." Computational Intelligence and Neuroscience 2009 (2009): 1–12. http://dx.doi.org/10.1155/2009/279515.
Повний текст джерелаKitayama, Yoshiharu, Mitsuhiro Nogami та Keitaro Hitomi. "An experimental feasibility study of a 4π gamma-ray imager using detector response patterns". Japanese Journal of Applied Physics, 25 червня 2024. http://dx.doi.org/10.35848/1347-4065/ad5ba0.
Повний текст джерелаДисертації з теми "Imagerie 3-Gamma"
Paradiso, Vincenzo. "Development of a portable gamma camera for accurate 3-D localization of radioactive hotspots." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC209.
Повний текст джерелаA coded aperture gamma camera for retrieving the three-dimensional (3-D) position of radioactive sources is presented. This is of considerable interest for a wide number of applications, ranging from the reconstruction of the 3-D shape of radioactive objects to augmented reality systems. Current portable γ-cameras only provide the relative angular position of the hotspots within their field of view. That is, they do not provide any metric information concerning the located sources. In this study, we propose two approaches to estimate the distance of the surrounding hotspots, and to autonomously determine if they are occluded by an object. The first consists in combining and accurately calibrating the gamma camera with a structured-light depth sensor. The second approach allows the estimation of the source-detector distance by means of stereo gamma imaging. To geometrically align the images obtained by the gamma, depth, and optical cameras used, a versatile calibration procedure has been designed and carried out. Such procedure uses a calibration phantom intentionally easy to build and inexpensive, allowing the procedure to be performed with only one radioactive point source. Experimental results showed that our calibration procedure yields to sub-pixel accuracy both in the re-projection error and the overlay of radiation and optical images. A quantitative analysis concerning the accuracy and resolution of the retrieved source-detector distance is also provided, along with an insight into the respective most influential factors. Moreover, the results obtained validated the choice of the geometry of the pinhole model for a coded aperture gamma camera
Cai, Dingbang. "Contributions to instrumental developments for the XEMIS2 camera, on-board ionization and scintillation measurements." Electronic Thesis or Diss., Ecole nationale supérieure Mines-Télécom Atlantique Bretagne Pays de la Loire, 2024. http://www.theses.fr/2024IMTA0408.
Повний текст джерелаThe work described in this thesis focuses on the evolution of nuclear medical imaging, from fundamental imaging techniques to current innovations, with a particular focus on the XEMIS2 camera. This liquid xenon Compton camera is designed for 3-gamma imaging of small, low-activity animals. The main objective of XEMIS2 is to localize in three dimensions a radiopharmaceutical labeled with a specific radionuclide, such as Scandium-44, while reducing the administered activity without compromising image quality. The thesis then focuses on the development and performance of the XEMIS2 camera. It covers the operational principles of the liquid xenon time projection chambers (LXeTPCs), the use of the Frisch grid to improve the performance of the ionization chambers, and the complex process of calibrating the scintillation signals in XEMIS2 using the Time over Threshold (TOT) method. Efforts to optimize calibration results are also discussed. By summarizing these technological and methodological advances, the thesis provides a historical perspective and a prospective analysis of the potential impact of these technologies on medical diagnostics and research
Duval, Samuel. "Développement d'un photomultiplicateur gazeux cryogénique dédié à un télescope Compton au xénon liquide pour l'imagerie médicale." Phd thesis, Université de Nantes, 2010. http://tel.archives-ouvertes.fr/tel-00594636.
Повний текст джерелаТези доповідей конференцій з теми "Imagerie 3-Gamma"
Du, Yanfeng, Wen Li, Brian Yanoff, Jeffrey Gordon, and Donald Castleberry. "4 pi direction sensitive gamma imager with RENA-3 readout ASIC." In Optical Engineering + Applications, edited by Ralph B. James, Arnold Burger, and Larry A. Franks. SPIE, 2007. http://dx.doi.org/10.1117/12.739073.
Повний текст джерелаTakeda, Shin'ichiro, Tadayuki Takahashi, Shin-nosuke Ishikawa, Hirokazu Odaka, Shin Watanabe, Hiroyasu Tajima, Naoki Kawachi, and Takashi Nakano. "Simulation study of 3-D gamma-ray imager with Si/CdTe semiconductor Compton camera." In 2010 IEEE Sensors Applications Symposium (SAS). IEEE, 2010. http://dx.doi.org/10.1109/sas.2010.5439430.
Повний текст джерелаLangford, Cory, Medhat Mickael, and Craig Barnett. "A Compact Multisensor LWD Tool Optimized for Unconventional Reservoirs." In 2023 SPWLA 64th Annual Logging Symposium. Society of Petrophysicists and Well Log Analysts, 2023. http://dx.doi.org/10.30632/spwla-2023-0103.
Повний текст джерелаFares, Wael, Swapan Dey, Paul New, Warda Albreiki, Atiqurrahman Bin Abd Rashid, Gabriela Lopez, Ahmed Ghobashy, Muhammad Mubeen, and Nigel Clegg. "Developing Carbonate Low Resistivity Pay Using Advanced LWD Ultra-Deep Resistivity with Nuclear Magnetic Resonance and High-Resolution Micro-Resistivity Imaging, A Case Study in a Mature Field, Onshore Abu Dhabi." In ADIPEC. SPE, 2023. http://dx.doi.org/10.2118/216744-ms.
Повний текст джерелаЗвіти організацій з теми "Imagerie 3-Gamma"
Zhong He, David Whe, and Glenn Knoll. Development of Gamma-Ray Compton Imager Using Room-Temperature 3-D Position Sensitive Semiconductor Detectors. Office of Scientific and Technical Information (OSTI), May 2003. http://dx.doi.org/10.2172/812020.
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