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Добірка наукової літератури з теми "3-Gamma imaging"

Автор: Grafiati

Опубліковано: 14 вересня 2024

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Статті в журналах з теми "3-Gamma imaging"

Haefner, Andrew, Ross Barnowski, Paul Luke, Mark Amman, and Kai Vetter. "Handheld real-time volumetric 3-D gamma-ray imaging." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 857 (June 2017): 42–49. http://dx.doi.org/10.1016/j.nima.2016.11.046.

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Vetter, Kai, Ross Barnowksi, Andrew Haefner, Tenzing H. Y. Joshi, Ryan Pavlovsky, and Brian J. Quiter. "Gamma-Ray imaging for nuclear security and safety: Towards 3-D gamma-ray vision." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 878 (January 2018): 159–68. http://dx.doi.org/10.1016/j.nima.2017.08.040.

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Hu, Yifan, Zhenlei Lyu, Peng Fan, Tianpeng Xu, Shi Wang, Yaqiang Liu та Tianyu Ma. "A Wide Energy Range and 4π-View Gamma Camera with Interspaced Position-Sensitive Scintillator Array and Embedded Heavy Metal Bars". Sensors 23, № 2 (13 січня 2023): 953. http://dx.doi.org/10.3390/s23020953.

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Анотація:

(1) Background: Gamma cameras have wide applications in industry, including nuclear power plant monitoring, emergency response, and homeland security. The desirable properties of a gamma camera include small weight, good resolution, large field of view (FOV), and wide imageable source energy range. Compton cameras can have a 4π FOV but have limited sensitivity at low energy. Coded-aperture gamma cameras are operatable at a wide photon energy range but typically have a limited FOV and increased weight due to the thick heavy metal collimators and shielding. In our lab, we previously proposed a 4π-view gamma imaging approach with a 3D position-sensitive detector, with which each detector element acts as the collimator for other detector elements. We presented promising imaging performance for 99mTc, 18F, and 137Cs sources. However, the imaging performance for middle- and high-energy sources requires further improvement. (2) Methods: In this study, we present a new gamma camera design to achieve satisfactory imaging performance in a wide gamma energy range. The proposed gamma camera consists of interspaced bar-shaped GAGG (Ce) crystals and tungsten absorbers. The metal bars enhance collimation for high-energy gamma photons without sacrificing the FOV. We assembled a gamma camera prototype and conducted experiments to evaluate the gamma camera’s performance for imaging 57Co, 137Cs, and 60Co point sources. (3) Results: Results show that the proposed gamma camera achieves a positioning accuracy of <3° for all gamma energies. It can clearly resolve two 137Cs point sources with 10° separation, two 57Co and two 60Co point sources with 20° separation, as well as a 2 × 3 137Cs point-source array with 20° separation. (4) Conclusions: We conclude that the proposed gamma camera design has comprehensive merits, including portability, 4π-view FOV, and good angular resolution across a wide energy range. The presented approach has promising potential in nuclear security applications.

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Chmeissani, Mokhtar, Machiel Kolstein, Gerard Ariño-Estrada, José Gabriel Macias-Montero, Carles Puigdengoles, and Jorge García. "Tracking a moving point source using triple gamma imaging." Journal of Instrumentation 19, no. 01 (January 1, 2024): P01001. http://dx.doi.org/10.1088/1748-0221/19/01/p01001.

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Abstract With positron emission tomography (PET), the positron of a β + emitter radioisotope annihilates with a nearby electron producing a pair of back-to-back 511 keV gamma rays that can be detected in a scanner surrounding the point source. The position of the point source is somewhere along the Line of Response (LOR) that passes through the positions where the 511 keV gammas are detected. In standard PET, an image reconstruction algorithm is used to combine these LORs into a final image. This paper presents a new tomographic imaging technique to locate the position of a β + emitting point source without using a standard PET image reconstruction algorithm. The data were collected with a Proof-of-Concept (PoC) PET scanner which has high spatial and energy resolutions. The imaging technique presented in this paper uses events where a gamma undergoes Compton scattering. The positions and energies deposited by the Compton scattered gamma define the surface of a Compton cone (CC) which is the locus of all possible positions of the point source, allowed by the Compton kinematics. The position of the same point source is also located somewhere on the LOR. Therefore, the position of the point source is defined by the 3 gammas and is given by the intersection point of the LOR and the Compton cone inside the Field of View (FOV) of the scanner. We refer to this method as CC×LOR. This new technique can locate the point source with an uncertainty of about 1 mm, after collecting a minimum of 200 CC×LOR events.

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Zhang, Jipeng, Xiong Xiao, Ye Chen, Bin Zhang, Xinhua Ma, Xianyun Ai, and Jinglun Li. "A Portable Three-Layer Compton Camera for Wide-Energy-Range Gamma-ray Imaging: Design, Simulation and Preliminary Testing." Sensors 23, no. 21 (November 3, 2023): 8951. http://dx.doi.org/10.3390/s23218951.

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(1) Background: The imaging energy range of a typical Compton camera is limited due to the fact that scattered gamma photons are seldom fully absorbed when the incident energies are above 3 MeV. Further improving the upper energy limit of gamma-ray imaging has important application significance in the active interrogation of special nuclear materials and chemical warfare agents, as well as range verification of proton therapy. (2) Methods: To realize gamma-ray imaging in a wide energy range of 0.3~7 MeV, a principle prototype, named a portable three-layer Compton camera, is developed using the scintillation detector that consists of an silicon photomultiplier array coupled with a Gd3Al2Ga3O12:Ce pixelated scintillator array. Implemented in a list-mode maximum likelihood expectation maximization algorithm, a far-field energy-domain imaging method based on the two interaction events is applied to estimate the initial energy and spatial distribution of gamma-ray sources. The simulation model of the detectors is established based on the Monte Carlo simulation toolkit Geant4. The reconstructed images of a 133Ba, a 137Cs and a 60Co point-like sources have been successfully obtained with our prototype in laboratory tests and compared with simulation studies. (3) Results: The proportion of effective imaging events accounts for about 2%, which allows our prototype to realize the reconstruction of the distribution of a 0.05 μSv/h 137Cs source in 10 s. The angular resolution for resolving two 137Cs point-like sources is 15°. Additional simulated imaging of the 6.13 MeV gamma-rays from 14.1 MeV neutron scattering with water preliminarily demonstrates the imaging capability for high incident energy. (4) Conclusions: We conclude that the prototype has a good imaging performance in a wide energy range (0.3~7 MeV), which shows potential in several MeV gamma-ray imaging applications.

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Li, Hui, and Wenbiao Chen. "Unintended findings: Therapeutic effects of hormones or gamma globulins on Lentiform Fork sign in 3 diabetic uremic patients: Case report/case series." Medicine 102, no. 34 (August 25, 2023): e34819. http://dx.doi.org/10.1097/md.0000000000034819.

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Introduction: The lentiform fork sign (LFS) is a unique magnetic resonance imaging (MRI) finding characterized by a bright hyperintense rim delineating the lentiform nucleus as a fork associated with metabolic acidosis in end-stage renal disease. Patient concerns: We report 3 cases of LFS in diabetic uremic patients. In one case of uremia, intensive hemodialysis treatment was not effective. Given our poor understanding of LFS, it was regarded as bilateral basal ganglia pathology, and pulse hormone and gamma globulins therapy was initiated. The patient neurological symptoms improved, and the pathological signs on imaging subsided. Based on our experience with the first LFS case, 2 diabetic uremic cases presenting with LFS were successfully treated with hormone or gamma globulin pulse therapy in addition to intensive hemodialysis. Diagnosis: Based on the clinical manifestations, past medical history and MRI imaging changes of the 3 cases reported here, the diagnosis of LFS was established. Interventions: Our experience from these 3 cases suggests that hormone supplementation and gamma globulin therapy may be indicated for treating LFS. Lessons: Our findings highlight that in diabetic uremic dialysis patients with neurological symptoms, LFS should be suspected. The clinical manifestations, past medical history and MRI imaging findings are essential for diagnosing LFS. Hormone supplementation and gamma globulin therapy may be the effective treatment for LFS.

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Wonho Lee and D. K. Wehe. "3-D isotropic imaging of environmental sources using a compact gamma camera." IEEE Transactions on Nuclear Science 51, no. 5 (October 2004): 2267–72. http://dx.doi.org/10.1109/tns.2004.834714.

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Cervantes, Hernán J., Christianne C. Cavinato, Letícia L. Campos, and Said R. Rabbani. "Gamma Knife® 3-D Dose Distribution Mapping by Magnetic Resonance Imaging." Applied Magnetic Resonance 39, no. 4 (October 2, 2010): 357–64. http://dx.doi.org/10.1007/s00723-010-0166-4.

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Bower, Geoffrey C. "Millimeter VLBI Observations of the Gamma-Ray Blazar NRAO 530." International Astronomical Union Colloquium 164 (1998): 41–42. http://dx.doi.org/10.1017/s0252921100044432.

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AbstractWe present here 3 epochs of 3 and 7 millimeter wavelength VLBI observations and 2 epochs of lower frequency VLBA imaging of the gamma-ray blazar NRAO 530. These observations document the evolution of the parsec scale jet in this source during the brightest flare in 3 decades. New jet components were created during the flare and are probably related to an increase in gamma-ray activity. The components travel at superluminal velocities, further confirming the connection between superluminal sources and gamma-ray blazars. The rapid evolution of the source makes tracking of components difficult. It appears that either components significantly decelerate or that there is rapid cooling and acceleration of elections. We may be identifying structure due to standing shocks. The jet is bent on all scales between 100 μarcsec to 10 arcsec. The results indicate the ability of 3 mm wavelength imaging to probe the nuclei of blazars rapidly and reliably.

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Watanabe, Yoichi, Chung K. Lee, and Bruce J. Gerbi. "Geometrical accuracy of a 3-tesla magnetic resonance imaging unit in Gamma Knife surgery." Journal of Neurosurgery 105, Supplement (December 2006): 190–93. http://dx.doi.org/10.3171/sup.2006.105.7.190.

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ObjectThe authors sought to evaluate and improve the geometrical accuracy of a 3-tesla magnetic resonance (MR) imaging unit used for Gamma Knife surgery (GKS).MethodsTo evaluate the geometrical accuracy of a Siemens Magnetom Trio 3-tesla MR imaging unit, two phantoms were used. Both phantoms were imaged with computed tomography (CT), a 1.5-tesla MR imaging unit (Siemens Avanto), and the 3-tesla MR imaging unit. A pair of orthogonal films was obtained with a radiotherapy simulator to validate the spatial coordinates of the marker positions determined with CT. The coordinates of the markers were measured using the GammaPlan treatment planning software. Magnetic resonance imaing was performed using three-dimensional (3D) magnetization-prepared rapid acquisition gradient echo (MPRAGE) and fast low-angle shot sequence (FLASH) pulse sequences. The voxel size was 1 × 1 × 1 mm3.Conclusions The root-mean-square error of MR images was 2 ± 0.73 mm for 3D MPRAGE. The error was reduced to 1.5 ± 0.64 mm for FLASH. The errors were decreased further by applying an image distortion correction method (the field-of-view filter) to the images acquired with FLASH. The mean errors were 1.3 ± 0.39 mm and 1.5 ± 0.77 mm for the two phantoms. The errors increased from 1 mm to 3.1 mm as the measurement points approached the caudal edge of the head coil (larger z value). Proper selection of a pulse sequence together with a geometrical distortion correction improved the geometrical accuracy of MR images. However, further study is needed to increase the geometrical accuracy of 3-tesla MR imaging units for radiosurgical applications.

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Більше джерел

Дисертації з теми "3-Gamma imaging"

Paradiso, Vincenzo. "Development of a portable gamma camera for accurate 3-D localization of radioactive hotspots." Thesis, Normandie, 2017. http://www.theses.fr/2017NORMC209.

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Le présent travail a pour but le développement d’une caméra gamma à masque codé permettant d’estimer la position tridimensionnelle (3D) des sources radioactives. Cela est d’un intérêt considérable dans le cadre d’un grand nombre d'applications, de la reconstruction de la forme 3D des objets radioactifs aux systèmes de réalité augmentée appliqués à la radioprotection. Les caméras gamma portables actuelles ne fournissent que la position angulaire relative des sources gamma à localiser, c'est-à-dire qu'aucune information métrique concernant les sources n’est disponible, comme par exemple leur distance par rapport à la caméra. Dans cette thèse, nous proposons principalement deux approches permettant d’estimer la position 3D des sources. La première approche consiste à étalonner la caméra gamma avec un capteur de profondeur à lumière structurée. La seconde approche permet d'estimer la distance source-détecteur par une méthode d’imagerie gamma stéréoscopique. Pour aligner géométriquement les images obtenues par la caméra gamma, le capteur de profondeur, et la caméra optique, une procédure d'étalonnage n’utilisant qu’une seule source ponctuelle radioactive a été conçue et mise en œuvre. Les résultats expérimentaux démontrent que les approches proposées permettent d'obtenir une précision inférieure au pixel, tant pour l’erreur de reprojection que pour la superposition des images gamma et optiques. Ces travaux présentent également une analyse quantitative de la précision et de la résolution relatives à l’estimation de la distance source-détecteur. De plus, les résultats obtenus ont validé le choix de la géométrie du modèle sténopé pour les caméras gamma à masque codé
A 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

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Watanabe, Shio. "Stereoscopic observations of TeV gamma-rays from the supernova remnant RX J0852.0-4622 with the CANGAROO-3 imaging air Cerenkov telescopes." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136732.

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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.

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Les travaux décrits dans cette thèse sont centrés sur l'évolution de l'imagerie médicale nucléaire, des techniques d'imagerie fondamentales aux innovations actuelles, avec un focus particulier sur la caméra XEMIS2. Cette caméra Compton au xénon liquide est conçue pour l'imagerie 3-gamma des petits animaux à faible activité. L'objectif principal de XEMIS2 est de localiser en trois dimensions un radiopharmaceutique marqué avec un radionucléide spécifique, tel que le Scandium-44, tout en réduisant l'activité administrée sans compromettre la qualité de l'image.La thèse se concentre ensuite sur le développement et les performances de la caméra XEMIS2. Elle couvre les principes opérationnels des chambres de projection temporelle au xénon liquide (LXeTPCs), l'utilisation de la grille de Frisch pour améliorer les performances des chambres d'ionisation, et le processus complexe de la calibration des signaux de scintillation dans XEMIS2 en utilisant la méthode Time over Threshold (TOT). Les efforts d'optimisation des résultats de calibration sont également abordés. En résumant ces avancées technologiques et méthodologiques, la thèse offre une perspective historique et une analyse prospective des impacts potentiels de ces technologies sur les diagnostics médicaux et la recherche
The 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

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Palmer, David M. "Gamma-ray imaging observations of Supernova 1987A." Thesis, 1992. https://thesis.library.caltech.edu/6645/3/Palmer_dm_1992.pdf.

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The Caltech imaging γ-ray telescope has made four balloon flights from Alice Springs, Australia, to observe the hard X-ray and γ-ray emission from Supernova 1987 A as it evolved between 1987 May and 1989 April. We have detected γ-rays with the time behavior and spectral signature expected from freshly-synthesized radioisotopes embedded in a cloud of ejecta. In particular, we detect the 847 and 1238 keY γ-ray lines produced by the decay of ^(56)Co, and the continuum spectrum expected from Compton scattering of these γ-trays. The results of these observations are compared with other measurements and with theoretical models of supernovae, and it is found that our results are consistent with core-collapse models for SN 1987A in which the centrally-produced radioisotopes have propagated outwards to mix with the ejecta.

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Finger, Mark Harold. "The Imaging of Extra-Galactic Low-Energy Gamma-Ray Sources: Prospects, Techniques, and Instrumentation." Thesis, 1988. https://thesis.library.caltech.edu/6690/3/Finger_mh_1988.pdf.

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The handful of extra-galactic low-energy gamma-ray sources so far observed are all active galaxies, which are expected to dominate future detections. The nature of these compact, highly luminous sources is at present not clear; however, they may be powered by massive black holes. Many of these sources may produce their peak luminosity in the 0.5 to 5.0 MeV energy band, and observation in this energy range will be important in revealing the nature of their central power-house.

Improved understanding of the nature of active galaxies will require detailed observations of 10-20 sources, while understanding of their gamma-ray luminosity function and its evolution will require the detection of ~100 sources. From x-ray number counts and the presently available information about active galaxy spectra, we estimate the hard x-ray and low-energy gamma-ray number source-flux relation N(>S) for active galaxies. Instruments capable of detecting ~100 active galaxies at low-energy gamma-ray energies are achievable. These instruments will, however, be observing sources with fluxes some 10⁻³ - 10⁻⁴ times lower than their instrumental background level, and will require careful control of systematic errors.

The angular resolution of an instrument, as well as its sensitivity, can limit the number of sources it can observe. We present an investigation of the angular resolution requirements for future low-energy gamma-ray instruments. We find that the strictest requirements arise not from the need to resolve detectable sources, but from the need to control the level of direction-to-direction fluctuations in the diffuse background level. We conclude that gamma-ray instruments capable of detecting 100 active galaxies must have sub-degree angular resolution.

We propose use of the coded aperture imaging technique as a method of achieving accurate control of systematic errors and fine angular resolution without unduly increasing the time needed to conduct full-sky surveys. This is a technique that employs a partially opaque mask to spatially modulate the source flux incident upon a position-sensitive photon detector. We present an analysis of coded aperture imaging for instruments that employ masks based on hexagonal uniformly redundant arrays. Rotation of such a mask allows complete, position-by-position background subtraction on short time-scales, and removes the periodic ambiguity inherent in uniformly redundant arrays.

An instrument, the Gamma-ray Imaging Payload, has been built that employs these imaging techniques. The primary detector of the instrument is a 41 cm diameter by 5 cm thick NaI(Tl) Anger camera. We describe the design and testing of the instrument in detail. Preliminary results from a balloon flight of the instrument are shown, demonstrating its imaging performance.

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Книги з теми "3-Gamma imaging"

Du, Junwei, and Krzysztof Iniewski, eds. Gamma Ray Imaging. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2.

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Частини книг з теми "3-Gamma imaging"

Montagnani, Giovanni Ludovico. "Development of a 3” LaBr3 SiPM-Based Detection Module for High Resolution Gamma Ray Spectroscopy and Imaging." In Special Topics in Information Technology, 77–82. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62476-7_7.

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AbstractGamma radiation detection finds many applications in different fields, including astrophysics, nuclear physics and medical diagnostics. Nowadays large Lanthanum Bromide crystals coupled to Photomultiplier Tubes (PMTs) represent the state of the art for gamma detection modules, in particular for spectroscopic measurements. Nevertheless, there is an interest in substituting photomultiplier tubes with solid state photodetectors like Silicon Photomultipliers (SiPMs), owing to the latter’s significant advantages. These include insensitivity to magnetic fields, low bias voltage, compactness, fast response and mechanical robustness. The aim of this thesis work, which was carried out within the context of the GAMMA project supported by IstitutoNazionale di FisicaNucleare (INFN), is the design, development and experimental characterization of a -ray spectrometer based on large Lanthanum Bromide scintillator crystals coupled with Silicon Photomultipliers. This detector specifications are compliant with nuclear physics experiments with energies ranging from 100 keV to 20 MeV, characterized by state-of-the-art energy resolution and imaging capability, in a compact, modular and robust structure. In order to perform the readout of large scintillator crystals, a matrix of 144 Silicon Photomultipliers was designed using NUV-HD SiPMs from Fondazione Bruno Kessler (FBK). These were chosen due to their high Photon Detection Efficiency in correspondence with the peak emission wavelength of the crystal, the high cell density and low Dark Count Rate.

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Manickavasagan, A., and N. Yasasvy. "Gamma-Ray Imaging." In Imaging with Electromagnetic Spectrum, 17–31. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54888-8_2.

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Li, Yunyun, and Yuntao Wu. "Metal-Loaded Plastic Scintillators Toward Gamma Spectroscopy Applications." In Gamma Ray Imaging, 231–43. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_11.

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Liu, Xiao, Hui Liu, and Yaqiang Liu. "Cascade Gamma Emission Coincidence Tomography." In Gamma Ray Imaging, 43–64. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_3.

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Johns, Paul M. "Materials for Gamma Radiation Sensors." In Gamma Ray Imaging, 181–207. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_9.

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Lucchetta, Giulio. "Concepts for Solid State Detectors in Space-Based Gamma-Ray Astrophysics." In Gamma Ray Imaging, 103–35. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_6.

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Tandel, S. K. "Nuclear Structure Studies Using Gamma-Ray Spectroscopy and Digital Signal Processing." In Gamma Ray Imaging, 1–19. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_1.

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Tian, Zifeng, and Zhaoheng Xie. "Toward a New Frontier in PET Image Reconstruction: A Paradigm Shift to the Learning-Based Methods." In Gamma Ray Imaging, 21–42. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_2.

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Kitayama, Yoshiharu. "Shield-Free Directional Gamma-Ray Detector Using Small-Angle Compton Scattering." In Gamma Ray Imaging, 165–79. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_8.

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Konstantinou, Georgios. "Metascintillators for Ultra-Fast Gamma Detectors." In Gamma Ray Imaging, 209–30. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-30666-2_10.

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Тези доповідей конференцій з теми "3-Gamma imaging"

Austin, Robert A. "Gamma ray detection with a 3 × 3 virtual Frisch grid array." In 2008 IEEE Nuclear Science Symposium and Medical Imaging conference (2008 NSS/MIC). IEEE, 2008. http://dx.doi.org/10.1109/nssmic.2008.4774538.

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Thrall, C. L., C. G. Wahl, and Zhong He. "Directional isotope identification using 3-D semiconductor gamma-ray-imaging spectrometers." In 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC 2009). IEEE, 2009. http://dx.doi.org/10.1109/nssmic.2009.5402026.

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Ye, Qing, Peng Fan, Qingyang Wei, Yunhan Yu, Shi Wang, Yaqiang Liu та Tianyu Ma. "Collimator-less 4π gamma imaging with 3-D position-sensitive detector". У 2016 IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD). IEEE, 2016. http://dx.doi.org/10.1109/nssmic.2016.8069729.

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Marin, Stefano, M. Stephan Okar, Leah M. Clark, Isabel E. Hernandez, Shaun D. Clarke, and Sara A. Pozzi. "Neutron-Gamma Correlation Analysis Using the Fission Sphere (FS-3)." In 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE, 2021. http://dx.doi.org/10.1109/nss/mic44867.2021.9875703.

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He, Z., M. A. Robbins, K. Saheb, and M. Kanatzidis. "Pixelated CsPbBr₃ Semiconductor Gamma Spectrometers." In 2023 IEEE Nuclear Science Symposium, Medical Imaging Conference and International Symposium on Room-Temperature Semiconductor Detectors (NSS MIC RTSD). IEEE, 2023. http://dx.doi.org/10.1109/nssmicrtsd49126.2023.10338534.

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Di Vita, Davide, Luca Buonanno, Fabio Canclini, Giacomo Ticchi, Marco Carminati, Franco Camera, and Carlo Fiorini. "High-DR High-Resolution Gamma-Ray Spectroscopy with 3" LaBr₃ and SiPMs." In 2021 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE, 2021. http://dx.doi.org/10.1109/nss/mic44867.2021.9875849.

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Kim, H., A. Kargar, L. Cirignano, J. F. Christian, V. Klepov, M. G. Kanatzidis, and M. R. Squillante. "Gamma-ray Spectra from a 3x3 CsPbBr₃ Array." In 2022 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC). IEEE, 2022. http://dx.doi.org/10.1109/nss/mic44845.2022.10399233.

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Shirwadkar, U., E. V. D. van Loef, R. Hawrami, S. Mukhopadhyay, J. Glodo, and K. S. Shah. "New promising scintillators for gamma-ray spectroscopy: Cs(Ba,Sr)(Br,I)3." In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (2011 NSS/MIC). IEEE, 2011. http://dx.doi.org/10.1109/nssmic.2011.6154636.

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Boucher, Yvan A., Feng Zhang, Willy Kaye, and Zhong He. "Measurements of gamma rays above 3 MeV using 3D position-sensitive 20×20×15 mm³ CdZnTe detectors." In 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference (2011 NSS/MIC). IEEE, 2011. http://dx.doi.org/10.1109/nssmic.2011.6154731.

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He, Zhong. "Hand-Held Gamma-Ray Imaging Sensors Using Room-Temperature 3-Dimensional Position-Sensitive Semiconductor Spectrometers." In UNATTENDED RADIATION SENSOR SYSTEMS FOR REMOTE APPLICATIONS. AIP, 2002. http://dx.doi.org/10.1063/1.1513971.

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Звіти організацій з теми "3-Gamma imaging"

Brand, A. D., T. J. Aucott, and D. P. Diprete. Gamma-ray imaging assay of cells 3-5 of the east cell line in the 235-F plutonium fuel form facility. Office of Scientific and Technical Information (OSTI), April 2017. http://dx.doi.org/10.2172/1361663.

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GammaModeler TM 3-D gamma-ray imaging technology. Office of Scientific and Technical Information (OSTI), September 2000. http://dx.doi.org/10.2172/774501.

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Gamma Ray Imaging System (GRIS) GammaCam{trademark}. Final report, January 3, 1994--May 31, 1996. Office of Scientific and Technical Information (OSTI), December 1996. http://dx.doi.org/10.2172/677195.

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