{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T15:02:48Z","timestamp":1793199768584,"version":"4.5.0"},"reference-count":14,"publisher":"IOP Publishing","issue":"6","license":[{"start":{"date-parts":[[2024,3,4]],"date-time":"2024-03-04T00:00:00Z","timestamp":1709510400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/publishingsupport.iopscience.iop.org\/iop-standard\/v1"},{"start":{"date-parts":[[2024,3,4]],"date-time":"2024-03-04T00:00:00Z","timestamp":1709510400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"funder":[{"name":"Ministry of Science and Technology, Taiwan","award":["109-2221-E-010-019-MY2"],"award-info":[{"award-number":["109-2221-E-010-019-MY2"]}]}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["Phys. Med. Biol."],"published-print":{"date-parts":[[2024,3,21]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Cone-beam computed tomography (CBCT) is widely used in dental imaging, small animal imaging, radiotherapy, and non-destructive industrial inspection. The quality of CBCT images depends on the precise knowledge of the CBCT system\u2019s alignment. We introduce a distinct procedure, \u2018precision alignment loop (PAL)\u2019, to calibrate any CBCT system with a circular trajectory. We describe the calibration procedure by using a line-beads phantom, and how PAL determines the misalignments from a CBCT system. PAL also yields the uncertainties in the simulated calibration to give an estimate of the errors in the misalignments. From the analytical simulations, PAL can precisely obtain the source-to-rotation axis distance, and the geometric center\n                    <jats:italic>G<\/jats:italic>\n                    , \u2018the point in\n                    <jats:italic>z<\/jats:italic>\n                    -axis meets the detector\u2019, where the\n                    <jats:italic>z<\/jats:italic>\n                    -axis is coincident with the line from the x-ray source that intersects the axis of the rotation orthogonally. The uncertainties of three misalignment angles of the detector are within \u00b10.05\u00b0, which is close to \u00b10.04\u00b0 for the results of Yang\n                    <jats:italic>et al<\/jats:italic>\n                    (2017\n                    <jats:italic>Med. Phys.<\/jats:italic>\n                    <jats:bold>44<\/jats:bold>\n                    1692), but our method is easy and simple to implement. Our distinct procedure, on the other hand, yields the calibration of a micro-CT system and an example of reconstructed images, showing our calibration method for the CBCT system to be simple, precise, and accurate.\n                  <\/jats:p>","DOI":"10.1088\/1361-6560\/ad29b8","type":"journal-article","created":{"date-parts":[[2024,2,15]],"date-time":"2024-02-15T17:25:28Z","timestamp":1708017928000},"page":"065002","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":5,"title":["A simple and precise alignment calibration method for cone-beam computed tomography with the verifications"],"prefix":"10.1088","volume":"69","author":[{"given":"Kun-Long","family":"Shih","sequence":"first","affiliation":[{"name":"National Taipei University of Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7546-1245","authenticated-orcid":true,"given":"David Shih-Chun","family":"Jin","sequence":"additional","affiliation":[{"name":"National Taipei University of Technology"},{"name":"National Yang Ming Chiao Tung University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-2050-4795","authenticated-orcid":true,"given":"Yu-Hong","family":"Wang","sequence":"additional","affiliation":[{"name":"National Yang Ming Chiao Tung University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trang","family":"Thi Ngoc Tran","sequence":"additional","affiliation":[{"name":"National Yang Ming Chiao Tung University"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3619-1358","authenticated-orcid":false,"given":"Jyh-Cheng","family":"Chen","sequence":"additional","affiliation":[{"name":"National Yang Ming Chiao Tung University"},{"name":"Xuzhou Medical University"},{"name":"China Medical University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"266","published-online":{"date-parts":[[2024,3,4]]},"reference":[{"key":"pmbad29b8bib1","doi-asserted-by":"publisher","first-page":"968","DOI":"10.1118\/1.1869652","type":"journal-article","article-title":"Accurate technique for complete geometric calibration of cone-beam computed tomography systems","volume":"32","author":"Cho","year":"2005","journal-title":"Med. 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All rights, including for text and data mining, AI training, and similar technologies, are reserved.","name":"copyright_information","label":"Copyright Information"},{"value":"2022-11-29","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-02-15","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-03-04","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}