カナイ　タカユキ   Kanai Takayuki   金井　貴幸    所属   医学部 医学科（東京女子医科大学病院）    職種   講師
論文種別	原著
言語種別	英語
査読の有無	査読あり
表題	Assessment of a computed tomography-based radiomics approach for assessing lung function in lung cancer patients.
掲載誌名	正式名：Physica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics (AIFB) 略　 称：Phys Med ISSNコード：1724191X/11201797
掲載区分	国外
巻・号・頁	101,pp.28-35
著者・共著者	Ieko Yoshiro, Kadoya Noriyuki, Sugai Yuto, Mouri Shiina, Umeda Mariko, Tanaka Shohei, Kanai Takayuki, Ichiji Kei, Yamamoto Takaya, Ariga Hisanori, Jingu Keiichi
発行年月	2022/09
概要	PURPOSE:We aimed to assess radiomics approaches for estimating three pulmonary function test (PFT) results (forced expiratory volume in one second [FEV1], forced vital capacity [FVC], and the ratio of FEV1 to FVC [FEV1/FVC]) using data extracted from chest computed tomography (CT) images.METHODS:This retrospective study included 85 lung cancer patients (mean age, 75 years ±8; 69 men) who underwent stereotactic body radiotherapy between 2012 and 2020. Their pretreatment chest breath-hold CT and PFT data before radiotherapy were obtained. A total of 107 radiomics features (Shape: 14, Intensity: 18, Texture: 75) were extracted using two methods: extraction of the lung tissue (<-250 HU) (APPROACH 1), and extraction of small blood vessels and lung tissue (APPROACH 2). The PFT results were estimated using the least absolute shrinkage and selection operator regression. Pearson's correlation coefficients (r) were determined for all PFT results, and the area under the curve (AUC) was calculated for FEV1/FVC (<70 %). Finally, we compared our approaches with the conventional formula (Conventional).RESULTS:For the estimated FEV1/FVC, the Pearson's r were 0.21 (P =.06), 0.69 (P <.01), and 0.73 (P <.01) for Conventional, APPROACH 1, and APPROACH 2, respectively; the AUCs for FEV1/FVC (<70 %) were 0.67 (95 % confidence interval [CI]: 0.55, 0.79), 0.82 (CI: 0.72, 0.91; P =.047) and 0.86 (CI: 0.78, 0.94; P =.01), respectively.CONCLUSIONS:The radiomics approach performed better than the conventional equation and may be useful for assessing lung function based on CT images.
DOI	10.1016/j.ejmp.2022.07.003
PMID	35872396