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In this study, the counting rate performance of a newly developed Compton camera for biological and medical applications was investigated; further, the sensitivity profile of this highly complicated imaging system was measured using 22Na and 18F point gamma-ray sources. 22Na was used to assess the imaging ability of this camera against the point source, and the intense 18F point source of 200 MBq...
In this paper, we report the estimations of the lower detection limits of gamma ray energy for a newly developed Compton camera for applications to nuclear medicine imaging. We performed simulation studies to investigate the relationship of the distance between the scatterer and absorber detectors with the lower detection limit. In addition, imaging tests were performed by using multiple sources.
The next generation of Compton Camera based on Si and CdTe semiconductor has been developed in Japan for cosmic gamma-ray observation in space. Angular resolution and hence sensitivity of Compton Cameras are improved by employing the imaging semiconductors with good energy and spatial resolution. Moreover, for the energy range from several tens keV to a few MeV, silicon is suitable for the scattering...
We have developed a prototype Compton camera for in vivo imaging by using semiconductor imaging devices, which has been proved to be successful techniques for the observation of high-energy astrophysical phenomena. In this camera, double-sided Si strip detectors (DSSDs) serve as scatterers and pixelized CdTe detectors (pCdTe) serve as absorbers. Some Compton images were acquired with radioisotopes...
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