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X-ray photons transmitted through the object were detected using a cadmium telluride flat panel detector, and 720 radiograms were sent to a personal computer to reconstruct 256 tomograms. For I-K-edge-enhanced CT, x-ray photons with energies ranging from 33 to 70\u00a0keV were selected. Subsequently, high-energy CT in the 60\u2013100\u00a0keV range was performed to reduce metal artifacts and to compare the results with those from I-K-edge CT. Using this cone-beam PCCT scanner, the effective pixel dimensions were 80 \u00d7 80\u00a0\u03bcm2, and fine coronary arteries in a dog-heart phantom were observed at high contrast with I-K-edge CT. In addition, high-energy CT reduced the metal artifact caused by a 0.1-mm-diameter hairpin-shaped tungsten wire.<\/jats:p>","DOI":"10.1063\/5.0314132","type":"journal-article","created":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T12:48:51Z","timestamp":1780318131000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Iodine K-edge-enhanced and high-energy imaging using a high-spatial-resolution dual-energy photon-counting x-ray computed tomography scanner"],"prefix":"10.1063","volume":"97","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-3645-8776","authenticated-orcid":false,"given":"Jiro","family":"Sato","sequence":"first","affiliation":[{"name":"Department of Clinical Oncology, Toho University Graduate School of Medicine 1 , 5-21-16 Omorinishi, Ota, Tokyo 143-0015,","place":["Japan"]},{"name":"Department of Surgery, Toho University Ohashi Medical Center 2 , 2-22-36 Ohashi, Meguro, Tokyo 153-8515,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5881-9201","authenticated-orcid":false,"given":"Eiichi","family":"Sato","sequence":"additional","affiliation":[{"name":"Honorary Professor of Physics, Iwate Medical University 3 , 2-14-6 Kawaramachi, Wakabayashi, Sendai, Miyagi 984-0816,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Reina","family":"Sato","sequence":"additional","affiliation":[{"name":"Department of Food Production and Environmental Management, Faculty of Agriculture, Iwate University 4 , 3-18-8 Ueda, Morioka, Iwate 020-0066,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-9276-0291","authenticated-orcid":false,"given":"Yuichi","family":"Sato","sequence":"additional","affiliation":[{"name":"Central Radiation Department, Iwate Medical University Hospital 5 , 2-1-1 Idaidori, Yahaba, Iwate 028-3694,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-0246-7271","authenticated-orcid":false,"given":"Kazuki","family":"Ito","sequence":"additional","affiliation":[{"name":"Department of Surgery, Toho University Ohashi Medical Center 2 , 2-22-36 Ohashi, Meguro, Tokyo 153-8515,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Osahiko","family":"Hagiwara","sequence":"additional","affiliation":[{"name":"Department of Surgery, Toho University Ohashi Medical Center 2 , 2-22-36 Ohashi, Meguro, Tokyo 153-8515,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Toshiyuki","family":"Enomoto","sequence":"additional","affiliation":[{"name":"Department of Surgery, Toho University Ohashi Medical Center 2 , 2-22-36 Ohashi, Meguro, Tokyo 153-8515,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8916-4663","authenticated-orcid":false,"given":"Manabu","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Surgery, Toho University Ohashi Medical Center 2 , 2-22-36 Ohashi, Meguro, Tokyo 153-8515,","place":["Japan"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2026,6,1]]},"reference":[{"key":"2026060108484708100_c1","doi-asserted-by":"publisher","first-page":"109089","DOI":"10.1016\/j.apradiso.2020.109089","volume":"159","year":"2020","journal-title":"Appl. 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