{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,13]],"date-time":"2026-11-13T19:21:36Z","timestamp":1794597696491,"version":"4.9.1"},"reference-count":41,"publisher":"Oxford University Press (OUP)","issue":"3","license":[{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"funder":[{"DOI":"10.13039\/501100002424","name":"FUJIFILM Corporation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002424","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100002424","name":"FUJIFILM Corporation","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100002424","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.atsjournals.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2022,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Rationale<\/jats:title>\n                    <jats:p>There is a growing need to accurately estimate the prognosis of idiopathic pulmonary fibrosis (IPF) in clinical practice, given the development of effective drugs for treating IPF.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>To develop artificial intelligence-based image analysis software to detect parenchymal and airway abnormalities on computed tomographic (CT) imaging of the chest and to explore their prognostic importance in patients with IPF.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>A novel artificial intelligence-based quantitative CT image analysis software (AIQCT) was developed by applying 304 high-resolution CT (HRCT) scans from patients with diffuse lung diseases as the training set. AIQCT automatically categorized and quantified 10 types of parenchymal patterns as well as airways, expressing the volumes as percentages of the total lung volume. To validate the software, the area percentages of each lesion quantified by AIQCT were compared with those of the visual scores using 30 plain high-resolution CT images with lung diseases. In addition, three-dimensional analysis for similarity with ground truth was performed using HRCT images from 10 patients with IPF. AIQCT was then applied to 120 patients with IPF who underwent HRCT scanning of the chest at our institute. Associations between the measured volumes and survival were analyzed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The correlations between AIQCT and the visual scores were moderate to strong (correlation coefficient 0.44\u20130.95) depending on the parenchymal pattern. The Dice indices for similarity between AIQCT data and ground truth were 0.67, 0.76, and 0.64 for reticulation, honeycombing, and bronchi, respectively. During a median follow-up period of 2,184 days, 66 patients died, and 1 underwent lung transplantation. In multivariable Cox regression analysis, bronchial volumes (adjusted hazard ratio [HR], 1.33; 95% confidence interval [CI], 1.16\u20131.53) and normal lung volumes (adjusted HR, 0.97; 95% CI, 0.94\u20130.99) were independently associated with survival after adjusting for the gender-age-lung physiology stage of IPF.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Our newly developed artificial intelligence-based image analysis software successfully quantified parenchymal lesions and airway volumes. Bronchial and normal lung volumes on HRCT imaging of the chest may provide additional prognostic information on the gender-age-lung physiology stage of IPF.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1513\/annalsats.202101-044oc","type":"journal-article","created":{"date-parts":[[2021,8,19]],"date-time":"2021-08-19T15:25:53Z","timestamp":1629386753000},"page":"399-406","update-policy":"https:\/\/doi.org\/10.1164\/crossmarkpolicies","source":"Crossref","is-referenced-by-count":88,"title":["Novel Artificial Intelligence-based Technology for Chest Computed Tomography Analysis of Idiopathic Pulmonary Fibrosis"],"prefix":"10.1093","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3378-6412","authenticated-orcid":false,"given":"Tomohiro","family":"Handa","sequence":"first","affiliation":[{"name":"Department of Respiratory Medicine"},{"name":"Department of Advanced Medicine for Respiratory Failure"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5719-0744","authenticated-orcid":false,"given":"Kiminobu","family":"Tanizawa","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tsuyoshi","family":"Oguma","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9546-9869","authenticated-orcid":false,"given":"Ryuji","family":"Uozumi","sequence":"additional","affiliation":[{"name":"Department of Biomedical Statistics and Bioinformatics, and"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kizuku","family":"Watanabe","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7481-0212","authenticated-orcid":false,"given":"Naoya","family":"Tanabe","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2595-7450","authenticated-orcid":false,"given":"Takafumi","family":"Niwamoto","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hiroshi","family":"Shima","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryobu","family":"Mori","sequence":"additional","affiliation":[{"name":"Department of Respiratory Medicine"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9781-7321","authenticated-orcid":false,"given":"Tomomi W.","family":"Nobashi","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1310-9403","authenticated-orcid":false,"given":"Ryo","family":"Sakamoto","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3397-4472","authenticated-orcid":false,"given":"Takeshi","family":"Kubo","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Imaging and Nuclear Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2803-1488","authenticated-orcid":false,"given":"Atsuko","family":"Kurosaki","sequence":"additional","affiliation":[{"name":"Department of Diagnostic Radiology, Fukujuji Hospital, Kiyose, Tokyo, Japan; 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