Zobrazeno 1 - 10
of 635
pro vyhledávání: '"Recovery Coefficient"'
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-15 (2024)
Abstract Background The limited spatial resolution in SPECT images leads to partial volume effect (PVE), degrading the subsequent dosimetric accuracy. We aim to quantitatively evaluate PVE and partial volume corrections (PVC), i.e., recovery coeffici
Externí odkaz:
https://doaj.org/article/6b7b1c53435e4f36839c6f43f39ec758
Assessing the deep learning based image quality enhancements for the BGO based GE omni legend PET/CT
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-14 (2024)
Abstract Background This study investigates the integration of Artificial Intelligence (AI) in compensating the lack of time-of-flight (TOF) of the GE Omni Legend PET/CT, which utilizes BGO scintillation crystals. Methods The current study evaluates
Externí odkaz:
https://doaj.org/article/22bf009d24e94cc9b263228e0e4fe451
Publikováno v:
Georesursy, Vol 26, Iss 3, Pp 109-115 (2024)
Studies of changes in the physical and chemical properties of reservoir gas and gas cap condensate of an extremely saturated reservoir oil and gas condensate system depending on the conditions of deposits (reservoir pressures and temperatures) were c
Externí odkaz:
https://doaj.org/article/6db249f0660847908e6e886694f6a4a9
Autor:
Stijn De Schepper, Gopinath Gnanasegaran, Wouter De Vos, Elke Van de Casteele, John C. Dickson, Tim Van den Wyngaert
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-16 (2024)
Abstract Background Unilateral condylar hyperplasia (UCH) of the mandible is a rare condition characterized by asymmetric growth of the mandibular condyles. Bone scintigraphy with SPECT(/CT) is commonly used to diagnose UCH and guide treatment. Still
Externí odkaz:
https://doaj.org/article/13417190f2e644de91988e27c22d615e
Autor:
Jehangir Khan, Tobias Rydèn, Martijn Van Essen, Johanna Svensson, Joseph Grudzinski, Peter Bernhardt
Publikováno v:
EJNMMI Physics, Vol 11, Iss 1, Pp 1-13 (2024)
Abstract Introduction This study aims to evaluate the use of CT-based whole kidney parenchyma (WKP) segmentation in 177Lu-DOTATATE dosimetry. Specifically, it investigates whether WKP volumes change during treatment and evaluates the accuracy of appl
Externí odkaz:
https://doaj.org/article/a9cb2b3e04a041ca9c94937d6041ac99
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-20 (2024)
Abstract This paper aims to reduce friction pair erosion of the clutch in the case of continuous shift; the dynamic separation process of the friction pair is investigated. The temperature of the friction pair, friction torque, and separation speed i
Externí odkaz:
https://doaj.org/article/af082c7dedf54a1987d1416d8c92ff72
Publikováno v:
Georesursy, Vol 26, Iss 3 (2024)
As oil reserves are depleted during the development of an oil deposit in an elastic-water-pressure mode, the water cut of the fluid gradually increases, reducing the efficiency of waterflooding and maintaining reservoir pressure by the system of inje
Externí odkaz:
https://doaj.org/article/19fb526714614003a2cf90748e39a957
Publikováno v:
气体物理, Vol 9, Iss 1, Pp 21-35 (2024)
Two-dimensional inlet is usually used in the wide-speed-range aircraft which has a higher flying velocity region. It is difficult to meet more requirements under both low-speed and high-speed flow conditions. Although the inlet perfor-mance could be
Externí odkaz:
https://doaj.org/article/0e4615603a3c4d888cb098dda0c68859
Autor:
Elisabeth Kirkeby Lysvik, Lars Tore Gyland Mikalsen, Mona-Elisabeth Rootwelt-Revheim, Kyrre Eeg Emblem, Trine Hjørnevik
Publikováno v:
EJNMMI Physics, Vol 10, Iss 1, Pp 1-13 (2023)
Abstract Background Q.Clear, a Bayesian penalized likelihood reconstruction algorithm, has shown high potential in improving quantitation accuracy in PET systems. The Q.Clear algorithm controls noise during the iterative reconstruction through a β p
Externí odkaz:
https://doaj.org/article/3824f6ab07c44db997d1b4d85e9247ab
Autor:
Brandon Baldassi, Harutyun Poladyan, Anirudh Shahi, Henry Maa-Hacquoil, Madeline Rapley, Borys Komarov, Justin Stiles, Vivianne Freitas, Michael Waterston, Olexiy Aseyev, Alla Reznik, Oleksandr Bubon
Publikováno v:
Frontiers in Oncology, Vol 14 (2024)
IntroductionA newly developed clinical organ-targeted Positron Emission Tomography (PET) system (also known as Radialis PET) is tested with a set of standardized and custom tests previously used to evaluate the performance of Positron Emission Mammog
Externí odkaz:
https://doaj.org/article/a4ff97a7f884442bb73f301d7fbc51da