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( Juwhan Choi ),( Sung Yong Lee ),( Zepa Yang ),( Jinhwan Lee ),( Jun Hee Lee ),( Hyun Koo Kim ),( Hwan Seok Yong ) 대한결핵 및 호흡기학회 2021 대한결핵 및 호흡기학회 추계학술대회 초록집 Vol.129 No.-
Purpose The usefulness of pulmonary rehabilitation in patients with reduced lung function before lung surgery remains unclear, and there is no adequate method for evaluating the effect of rehabilitation. We aimed to evaluate the usefulness of rehabilitation in patients with non-small cell lung cancer (NSCLC) undergoing lung cancer surgery. Materials and Materials and Methods We retrospectively analyzed the medical records of patients with NSCLC who underwent lung surgery at Korea University Guro Hospital between 2018 and 2020. Patients were divided into two groups depending on whether they underwent pulmonary rehabilitation. Pulmonary function test (PFT) data and muscle index determined using chest computed tomography (CT) images were analyzed. Because the baseline characteristics were different between the two groups, propensity score matching was performed. Results Of 325 patients, 75 (23.1%) and 250 (76.9%) were included in the rehabilitation and non-rehabilitation (control) groups, respectively. The rehabilitation group had a worse general condition at baseline. After propensity score matching, 45 patients remained in each group. Pulmonary function (forced expiratory volume in 1 s, %) (P = 0.001) and the muscle index (P = 0.001) were better preserved in the rehabilitation group. Muscle loss of 3.4% and 0.6% was observed in the control and rehabilitation groups, respectively (P = 0.003). In addition, the incidence of embolic events was low in the rehabilitation group (P = 0.044). Conclusion Pulmonary rehabilitation is useful in patients with NSCLC undergoing lung surgery. Pulmonary rehabilitation preserves lung function, muscle and reduces embolic events after surgery. Pulmonary rehabilitation is recommended for patients with NSCLC undergoing surgery.
Clinical validation of a deep-learning-based bone age software in healthy Korean children
Nam Hyo-Kyoung,Lea Winnah Wu-In,Yang Zepa,Noh Eunjin,Rhie Young-Jun,Lee Kee-Hyoung,Hong Suk-Joo 대한소아내분비학회 2024 Annals of Pediatirc Endocrinology & Metabolism Vol.29 No.2
Purpose: Bone age (BA) is needed to assess developmental status and growth disorders. We evaluated the clinical performance of a deep-learning-based BA software to estimate the chronological age (CA) of healthy Korean children.Methods: This retrospective study included 371 healthy children (217 boys, 154 girls), aged between 4 and 17 years, who visited the Department of Pediatrics for health check-ups between January 2017 and December 2018. A total of 553 left-hand radiographs from 371 healthy Korean children were evaluated using a commercial deep-learning-based BA software (BoneAge, Vuno, Seoul, Korea). The clinical performance of the deep learning (DL) software was determined using the concordance rate and Bland-Altman analysis via comparison with the CA.Results: A 2-sample <i>t</i>-test (<i>P</i><0.001) and Fisher exact test (<i>P</i>=0.011) showed a significant difference between the normal CA and the BA estimated by the DL software. There was good correlation between the 2 variables (<i>r</i>=0.96, <i>P</i><0.001); however, the root mean square error was 15.4 months. With a 12-month cutoff, the concordance rate was 58.8%. The Bland-Altman plot showed that the DL software tended to underestimate the BA compared with the CA, especially in children under the age of 8.3 years.Conclusion: The DL-based BA software showed a low concordance rate and a tendency to underestimate the BA in healthy Korean children.
Sang-Ji Kim,Hwan Seok Yong,Eun-Young Kang,Zepa Yang,Jung-Youn Kim,Young-Hoon Yoon 대한영상의학회 2024 대한영상의학회지 Vol.85 No.1
Purpose To evaluate whether the image quality of chest radiographs obtained using a camera-type portable X-ray device is appropriate for clinical practice by comparing them with traditional mobile digital X-ray devices. Materials and Methods Eighty-six patients who visited our emergency department and underwent endotracheal intubation, central venous catheterization, or nasogastric tube insertion were included in the study. Two radiologists scored images captured with traditional mobile devices before insertion and those captured with camera-type devices after insertion. Identification of the inserted instruments was evaluated on a 5-point scale, and the overall image quality was evaluated on a total of 20 points scale. Results The identification score of the instruments was 4.67 ± 0.71. The overall image quality score was 19.70 ± 0.72 and 15.02 ± 3.31 (p < 0.001) for the mobile and camera-type devices, respectively. The scores of the camera-type device were significantly lower than those of the mobile device in terms of the detailed items of respiratory motion artifacts, trachea and bronchus, pulmonary vessels, posterior cardiac blood vessels, thoracic intervertebral disc space, subdiaphragmatic vessels, and diaphragm (p = 0.013 for the item of diaphragm, p < 0.001 for the other detailed items). Conclusion Although caution is required for general diagnostic purposes as image quality degrades, a camera-type device can be used to evaluate the inserted instruments in chest radiographs.