Zobrazeno 1 - 10
of 6 703
pro vyhledávání: '"GAMMA CAMERA"'
Publikováno v:
University of Toronto Quarterly. Summer2021, Vol. 90 Issue 3, p661-668. 8p.
Publikováno v:
Yuanzineng kexue jishu, Vol 58, Iss 10, Pp 2211-2219 (2024)
As radioactive sources are increasingly used in scientific research, industry and other fields, radioactive sources are often lost due to improper management and control. Since gamma rays have higher penetrating power and longer action distance than
Externí odkaz:
https://doaj.org/article/3edbc582720545ec9b494ac4f6674c40
Publikováno v:
Nuclear Engineering and Technology, Vol 56, Iss 8, Pp 3188-3198 (2024)
Efficient and secure decommissioning of nuclear facilities demands advanced technologies. In this context, gamma-ray detection and imaging are crucial in identifying radioactive hotspots and monitoring radiation levels. Our study is dedicated to deve
Externí odkaz:
https://doaj.org/article/abf24725b41542a2a1e2c82f5783e731
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-23 (2024)
Abstract Background Portable gamma cameras are being developed for nuclear medicine procedures such as thyroid scintigraphy. This article introduces Seracam® – a new technology that combines small field of view gamma imaging with optical imaging
Externí odkaz:
https://doaj.org/article/0c89ab6ca7c341e8a8fd1ff8166cbd1a
Publikováno v:
Frontiers in Veterinary Science, Vol 11 (2024)
IntroductionSmall-field-of-view (SFOV) gamma cameras can offer higher sensitivities than conventional gamma cameras. However, there are currently no reports on the efficacy and safety of thyroid scintigraphy using SFOV gamma cameras in veterinary med
Externí odkaz:
https://doaj.org/article/7764c7bee2dc434698fdc395592c4a9e
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-21 (2024)
Abstract Purpose Handheld gamma cameras with coded aperture collimators are under investigation for intraoperative imaging in nuclear medicine. Coded apertures are a promising collimation technique for applications such as lymph node localization due
Externí odkaz:
https://doaj.org/article/adc9edd4133a4e839d2e31ba396314a1
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-19 (2024)
Abstract Background In image processing for activity quantification, the end goal is to produce a metric that is independent of the measurement geometry. Photon attenuation needs to be accounted for and can be accomplished utilizing spectral informat
Externí odkaz:
https://doaj.org/article/1db3cf073eff4e67ad4b47f2acf6a4bb
Publikováno v:
Nuclear Engineering and Technology, Vol 56, Iss 1, Pp 56-63 (2024)
In high radiation fields, gamma cameras suffer from pulse pile-up, resulting in poor energy resolution, count losses, and image distortion. To overcome this problem, various methods have been introduced to reduce the size of the aperture or pixel, re
Externí odkaz:
https://doaj.org/article/ec02d7a15cf14d89881c039a53833742
Publikováno v:
Sensors, Vol 24, Iss 18, p 6052 (2024)
Most single-photon emission computed tomography (SPECT) scanners employ a gamma camera with a large scintillator crystal and 50–100 large photomultiplier tubes (PMTs). In the past, we proposed that the weight, size and cost of a scanner could be re
Externí odkaz:
https://doaj.org/article/2c77ba4e2c0f4c6da2c6e17417b33662
Publikováno v:
EJNMMI Physics, Vol 10, Iss 1, Pp 1-18 (2023)
Abstract Background Current guidelines of the radioiodine uptake (RAIU) test allow the use of different equipment, isotopes, activity and region-of-interest (ROI). We evaluated presence and extent of these differences in clinical practice and evaluat
Externí odkaz:
https://doaj.org/article/62a13561a109425d8086dfa73174fd09