Frontiers in Medicine, 2021 Background: The desaturation–distance ratio (DDR), the ratio of the desaturation area to the distance walked, is a promising, reliable, and simple physiologic tool for functional evaluation in subjects with interstitial lung diseases ...
Douglas Silva Queiroz +8 more
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Journal of Chest Surgery, 2021 Background: Predicting postoperative lung function after pneumonectomy is essential. We retrospectively compared postoperative lung function to predicted postoperative lung function based on computed tomography (CT) volumetry and perfusion scintigraphy
Hee Joon Kang, Seok Soo Lee
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Volumetry versus linear diameter lung nodule measurement: an ultra-low-dose computed tomography lung cancer screening study [PDF]
Digital Diagnostics, 2023 BACKGROUND: The DutchBelgian Randomized Lung Cancer Screening Trial (NELSON) used a volume-based protocol and significantly reduced the prevalence of false-positive results (2.1%).
Maria M. Suchilova +7 more
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Accurate measures of regional lung air volumes from chest X-rays of small animals [PDF]
, 2022 We present a robust technique for calculating regional volume changes within the lung from X-ray radiograph sequences captured during ventilation, without the use of computed tomography (CT). This technique is based on the change in transmitted X-ray intensity that occurs for each lung region as air displaces the attenuating lung tissue.
arxiv +1 more source
Automated Estimation of Total Lung Volume using Chest Radiographs and Deep Learning [PDF]
, 2021 Total lung volume is an important quantitative biomarker and is used for the assessment of restrictive lung diseases. In this study, we investigate the performance of several deep-learning approaches for automated measurement of total lung volume from chest radiographs.
arxiv +1 more source
Quantification of lung function on CT images based on pulmonary radiomic filtering [PDF]
, 2021 Purpose: To develop a radiomics filtering technique for characterizing spatial-encoded regional pulmonary ventilation information on lung CT. Methods: The lung volume was segmented on 46 CT images, and a 3D sliding window kernel was implemented across the lung volume to capture the spatial-encoded image information.
arxiv +1 more source
Measurement and Analysis of Lobar Lung Deformation After a Change of Patient Position During Video-Assisted Thoracoscopic Surgery [PDF]
, 2022 Video-assisted thoracoscopic surgery (VATS) is a minimally invasive surgical technique for the diagnosis and treatment of early-stage lung cancer. During VATS, large lung deformation occurs as a result of a change of patient position and a pneumothorax (lung deflation), which hinders the intraoperative localization of pulmonary nodules.
arxiv +1 more source
Changes in Cross-Sectional Area and Transverse Diameter of the Heart on Inspiratory and Expiratory Chest CT: Correlation with Changes in Lung Size and Influence on Cardiothoracic Ratio Measurement. [PDF]
PLoS ONE, 2015 The aim of this study was to investigate physiological changes in cardiac area and diameters between inspiratory and expiratory chest computed tomography (CT), and to assess their correlation with lung size change and influence on cardiothoracic ratio ...
Hayato Tomita +5 more
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Quantitative computerized tomography evaluation of the effects of COVID-19 pneumonia on lung volume
Cukurova Medical Journal, 2022 Purpose: The aim of this study was o assess the relationship between lung volume decrease and computed tomography (CT) findings in patients with COVID-19 pneumonia in early period.
Ayşe Özlem Balık, Buket Yağcı
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Elastocapillary network model of inhalation [PDF]
Physical Review Research, 2, 043382 (2020), 2020 The seemingly simple process of inhalation relies on a complex interplay between muscular contraction in the thorax, elasto-capillary interactions in individual lung branches, propagation of air between different connected branches, and overall air flow into the lungs.
arxiv +1 more source