{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,12]],"date-time":"2026-03-12T20:01:06Z","timestamp":1773345666663,"version":"3.50.1"},"reference-count":42,"publisher":"MDPI AG","issue":"9","license":[{"start":{"date-parts":[[2020,4,26]],"date-time":"2020-04-26T00:00:00Z","timestamp":1587859200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["JP19K17261"],"award-info":[{"award-number":["JP19K17261"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Compton cameras can simultaneously detect multi-isotopes; however, when simultaneous imaging is performed, crosstalk artifacts appear on the images obtained using a low-energy window. In conventional single-photon emission computed tomography, a dual energy window (DEW) subtraction method is used to reduce crosstalk. This study aimed to evaluate the effectiveness of employing the DEW technique to reduce crosstalk artifacts in Compton images obtained using low-energy windows. To this end, in this study, we compared reconstructed images obtained using either a photo-peak window or a scatter window by performing image subtraction based on the differences between the two images. Simulation calculations were performed to obtain the list data for the Compton camera using a 171 and a 511 keV point source. In the images reconstructed using these data, crosstalk artifacts were clearly observed in the images obtained using a 171 keV photo-peak energy window. In the images obtained using a scatter window (176\u2013186 keV), only crosstalk artifacts were visible. The DEW method could eliminate the influence of high-energy sources on the images obtained with a photo-peak window, thereby improving quantitative capability. This was also observed when the DEW method was used on experimentally obtained images.<\/jats:p>","DOI":"10.3390\/s20092453","type":"journal-article","created":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T10:30:58Z","timestamp":1588069858000},"page":"2453","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Crosstalk Reduction Using a Dual Energy Window Scatter Correction in Compton Imaging"],"prefix":"10.3390","volume":"20","author":[{"given":"Makoto","family":"Sakai","sequence":"first","affiliation":[{"name":"Graduate School of Medicine, Gunma University Heavy Ion Medical Center, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Raj Kumar","family":"Parajuli","sequence":"additional","affiliation":[{"name":"Graduate School of Medicine, Gunma University Heavy Ion Medical Center, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"},{"name":"Department of Molecular Imaging and Theranostics, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, Anagawa 4-9-1, Inage, Chiba 263-8555, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshiki","family":"Kubota","sequence":"additional","affiliation":[{"name":"Graduate School of Medicine, Gunma University Heavy Ion Medical Center, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nobuteru","family":"Kubo","sequence":"additional","affiliation":[{"name":"Department of Radiation Oncology, Graduate School of Medicine, Gunma University, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mitsutaka","family":"Yamaguchi","sequence":"additional","affiliation":[{"name":"Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki-Machi, Takasaki 370-1292, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuto","family":"Nagao","sequence":"additional","affiliation":[{"name":"Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki-Machi, Takasaki 370-1292, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3991-5035","authenticated-orcid":false,"given":"Naoki","family":"Kawachi","sequence":"additional","affiliation":[{"name":"Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, 1233 Watanuki-Machi, Takasaki 370-1292, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mikiko","family":"Kikuchi","sequence":"additional","affiliation":[{"name":"Graduate School of Medicine, Gunma University Heavy Ion Medical Center, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuo","family":"Arakawa","sequence":"additional","affiliation":[{"name":"Graduate School of Medicine, Gunma University Heavy Ion Medical Center, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mutsumi","family":"Tashiro","sequence":"additional","affiliation":[{"name":"Graduate School of Medicine, Gunma University Heavy Ion Medical Center, 3-39-22 Showa-Machi, Maebashi 371-8511, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"657","DOI":"10.1086\/191794","article-title":"Instrument description and performance of the Imaging Gamma-Ray Telescope COMPTEL aboard the Compton Gamma-Ray Observatory","volume":"86","author":"Schoenfelder","year":"1993","journal-title":"Astrophys. 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