Results 11 to 20 of about 235,461 (293)
Review of Scientific Instruments, 2010 In this work, we present the results of the experimental characterization of the DRAGO (DRift detector Array-based Gamma camera for Oncology), a detection system developed for high-spatial resolution gamma-ray imaging. This camera is based on a monolithic array of 77 silicon drift detectors (SDDs), with a total active area of 6.7 cm2, coupled to a ...
C. Fiorini +11 more
openaire +5 more sources
Quantification of SPECT Concentric Ring Artifacts by Radiomics and Radial Features
Applied Sciences, 2022 (1) Background: Concentric ring artifacts in reconstructed SPECT images indicate the presence of detector non-uniformity in gamma camera systems. The identification of these artifacts is generally visual and not quantitative.
Emilio Mezzenga +5 more
doaj +1 more source
Nuclear Engineering and Technology, 2019 Gamma-ray images generally suffer from a lot of noise because of low photon detection in the gamma camera system. The purpose of this study is to improve the image quality in gamma-ray images using a gamma camera system with a fast nonlocal means (FNLM ...
Chan Rok Park, Youngjin Lee
doaj +1 more source
AIP Advances, 2022 This work presents a novel stereo coded aperture gamma camera based on four detection modules placed within four quadrants. Each module includes 48 × 48 strips of Bi4Ge3O12 scintillators, 24 × 24 pieces of silicon photomultipliers (SiPMs), and a set of ...
Yantao Liu +22 more
doaj +1 more source
The Interplanetary Network Supplement to the BeppoSAX Gamma-Ray Burst Catalogs [PDF]
, 2010 Between 1996 July and 2002 April, one or more spacecraft of the interplanetary network detected 787 cosmic gamma-ray bursts that were also detected by the Gamma-Ray Burst Monitor and/or Wide-Field X-Ray Camera experiments aboard the BeppoSAX spacecraft ...
A. B. Sanin +58 more
core +2 more sources
Evaluation of Thyroid Uptake of 99mTc Pertechnetate Using Gamma Camera and Dose Calibrator Methods in the Sudanese Population [PDF]
International Journal of Biomedicine, 2022 Background: Estimation of the thyroid gland volume is generally considered important in several pathologic situations. The main objective of this study was to evaluate the thyroid uptake (TU) of 99mTcO4- in Sudanese people, using gamma camera and dose ...
Zobai Tageldin Yousif +8 more
doaj +1 more source
New readout and data-acquisition system in an electron-tracking Compton camera for MeV gamma-ray astronomy (SMILE-II) [PDF]
, 2015 For MeV gamma-ray astronomy, we have developed an electron-tracking Compton camera (ETCC) as a MeV gamma-ray telescope capable of rejecting the radiation background and attaining the high sensitivity of near 1 mCrab in space. Our ETCC comprises a gaseous
Iwaki, Satoru +19 more
core +2 more sources
Nuclear Engineering and Technology, 2019 To improve the noise characteristics, software-based noise reduction algorithms are widely used in cadmium zinc telluride (CZT) pixelated semiconductor gamma camera system.
Youngjin Lee
doaj +1 more source
Development and evaluation of a compact gamma camera for radiation monitoring
Nuclear Engineering and Technology, 2023 The purpose of this study is to perform radiation monitoring by acquiring gamma images and real-time optical images for 99mTc vial source using charge couple device (CCD) cameras equipped with the proposed compact gamma camera.
Dong-Hee Han +6 more
doaj +1 more source
A New Analysis Method for Reconstructing the Arrival Direction of TeV Gamma-rays Using a Single Imaging Atmospheric Cherenkov Telescope [PDF]
, 2000 We present a method of atmospheric Cherenkov imaging which reconstructs the unique arrival direction of TeV gamma rays using a single telescope. The method is derived empirically and utilizes several features of gamma-ray induced air showers which ...
Akerlof +15 more
core +2 more sources