Journal of Thoracic Imaging最新文献

{"title":"Correcting Posterior Paraspinal Muscle Computed Tomography Density for Intravenous Contrast Material Independent of Sex and Vascular Phase.","authors":"Jevin Lortie, Benjamin Rush, Grace Gage, Ravi Dhingra, Scott Hetzel, Perry J Pickhardt, Timothy P Szczykutowicz, Adam J Kuchnia","doi":"10.1097/RTI.0000000000000743","DOIUrl":"10.1097/RTI.0000000000000743","url":null,"abstract":"<p><strong>Purpose: </strong>Intravenous contrast poses challenges to computed tomography (CT) muscle density analysis. We developed and tested corrections for contrast-enhanced CT muscle density to improve muscle analysis and the utility of CT scans for the assessment of myosteatosis.</p><p><strong>Materials and methods: </strong>Using retrospective images from 240 adults who received routine abdominal CT imaging from March to November 2020 with weight-based iodine contrast, we obtained paraspinal muscle density measurements from noncontrast (NC), arterial, and venous-phase images. We used a calibration sample to develop 9 different mean and regression-based corrections for the effect of contrast. We applied the corrections in a validation sample and conducted equivalence testing.</p><p><strong>Results: </strong>We evaluated 140 patients (mean age 52.0 y [SD: 18.3]; 60% female) in the calibration sample and 100 patients (mean age 54.8 y [SD: 18.9]; 60% female) in the validation sample. Contrast-enhanced muscle density was higher than NC by 8.6 HU (SD: 6.2) for the arterial phase (female, 10.4 HU [SD: 5.7]; male, 6.0 HU [SD:6.0]) and by 6.4 HU [SD:8.1] for the venous phase (female, 8.0 HU [SD: 8.6]; male, 4.0 HU [SD: 6.6]). Corrected contrast-enhanced and NC muscle density was equivalent within 3 HU for all correctionns. The -7.5 HU correction, independent of sex and phase, performed well for arterial (95% CI: -0.18, 1.80 HU) and venous-phase data (95% CI: -0.88, 1.41 HU).</p><p><strong>Conclusions: </strong>Our validated correction factor of -7.5 HU renders contrast-enhanced muscle density statistically similar to NC density and is a feasible rule-of-thumb for clinicians to implement.</p>","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10950837/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41153486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Findings on High Resolution Computed Tomography in Symptomatic Veterans with Deployment-Related Lung Disease.","authors":"Cecile S Rose, Lauren M Zell-Baran, Carlyne Cool, Camille M Moore, Jenna Wolff, Andrea S Oh, Tilman Koelsch, John C Richards, Silpa D Krefft, Carla G Wilson, David A Lynch","doi":"10.1097/RTI.0000000000000742","DOIUrl":"10.1097/RTI.0000000000000742","url":null,"abstract":"<p><strong>Purpose: </strong>Military deployment to dusty, austere environments in Southwest Asia and Afghanistan is associated with symptomatic airways diseases including asthma and bronchiolitis. The utility of chest high-resolution computed tomographic (HRCT) imaging in lung disease diagnosis in this population is poorly understood. We investigated visual assessment of HRCT for identifying deployment-related lung disease compared with healthy controls.</p><p><strong>Materials and methods: </strong>Chest HRCT images from 46 healthy controls and 45 symptomatic deployed military personnel with clinically confirmed asthma and/or biopsy-confirmed distal lung disease were scored by 3 independent thoracic radiologists. We compared demographic and clinical characteristics and frequency of imaging findings between deployers and controls, and between deployers with asthma and those with biopsy-confirmed distal lung disease, using χ2, Fisher exact or t tests, and logistic regression where appropriate. We also analyzed inter-rater agreement for imaging findings.</p><p><strong>Results: </strong>Expiratory air trapping was the only chest CT imaging finding that was significantly more frequent in deployers compared with controls. None of the 24 deployers with biopsy-confirmed bronchiolitis and/or granulomatous pneumonitis had HRCT findings of inspiratory mosaic attenuation or centrilobular nodularity. Only 2 of 21 with biopsy-proven emphysema had emphysema on HRCT.</p><p><strong>Conclusions: </strong>Compared with surgical lung biopsy, visual assessment of HRCT showed few abnormalities in this small cohort of previously deployed symptomatic veterans with normal or near-normal spirometry.</p>","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10940183/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41140822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Rare Case of Localized Pulmonary Alveolar Proteinosis With Part-solid Ground-glass Nodule-like Appearance","authors":"Akiko Koga, Tomonori Chikasue, Akiko Sumi, Shuichi Tanoue, Toshi Abe, Saeko Tokisawa, Toshihiro Hashiguchi, Masaki Kashihara, Koichi Ohshima, Kiminori Fujimoto","doi":"10.1097/rti.0000000000000738","DOIUrl":"https://doi.org/10.1097/rti.0000000000000738","url":null,"abstract":"Koga, Akiko MD*; Chikasue, Tomonori MD*; Sumi, Akiko MD, PhD*; Tanoue, Shuichi MD, PhD*; Abe, Toshi MD, PhD*; Tokisawa, Saeko MD†; Hashiguchi, Toshihiro MD, PhD‡; Kashihara, Masaki MD, PhD‡; Ohshima, Koichi MD, PhD§; Fujimoto, Kiminori MD, PhD* Author Information","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135098342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three Cases of Coronavirus Disease 2019 Vaccine-associated Organizing Pneumonia","authors":"Takafumi Ono, Takashi Koyama, Kenji Notohara, Yuki Sakata, Yoko Akaike, Junya Itakura, Takafumi Yamano, Momoko Hayase, Tadashi Ishida","doi":"10.1097/rti.0000000000000740","DOIUrl":"https://doi.org/10.1097/rti.0000000000000740","url":null,"abstract":"Ono, Takafumi MD, PhD*; Koyama, Takashi MD, PhD*; Notohara, Kenji MD, PhD†; Sakata, Yuki MD*; Akaike, Yoko MD, PhD†; Itakura, Junya MD, PhD†; Yamano, Takafumi MD‡; Hayase, Momoko MD‡; Ishida, Tadashi MD, PhD‡ Author Information","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135205115","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Elastic Registration Algorithm Based on Three-dimensional Pulmonary MRI in Quantitative Assessment of Severity of Idiopathic Pulmonary Fibrosis.","authors":"Xiaoyan Yang,&nbsp;Pengxin Yu,&nbsp;Wenqing Xu,&nbsp;Haishuang Sun,&nbsp;Jianghui Duan,&nbsp;Yueyin Han,&nbsp;Lili Zhu,&nbsp;Bingbing Xie,&nbsp;Jing Geng,&nbsp;Sa Luo,&nbsp;Shiyao Wang,&nbsp;Yanhong Ren,&nbsp;Rongguo Zhang,&nbsp;Min Liu,&nbsp;Huaping Dai,&nbsp;Chen Wang","doi":"10.1097/RTI.0000000000000735","DOIUrl":"10.1097/RTI.0000000000000735","url":null,"abstract":"<p><strong>Purpose: </strong>To quantitatively analyze lung elasticity in idiopathic pulmonary fibrosis (IPF) using elastic registration based on 3-dimensional pulmonary magnetic resonance imaging (3D-PMRI) and to assess its' correlations with the severity of IPF patients.</p><p><strong>Material and methods: </strong>Thirty male patients with IPF (mean age: 62±6 y) and 30 age-matched male healthy controls (mean age: 62±6 y) were prospectively enrolled. 3D-PMRI was acquired with a 3-dimensional ultrashort echo time sequence in end-inspiration and end-expiration. MR images were registered from end-inspiration to end-expiration with the elastic registration algorithm. Jacobian determinants were calculated from deformation fields on color maps. The log means of the Jacobian determinants (Jac-mean) and Dice similarity coefficient were used to describe lung elasticity between 2 groups. Then, the correlation of lung elasticity with dyspnea Medical Research Council (MRC) score, exercise tolerance, health-related quality of life, lung function, and the extent of pulmonary fibrosis on chest computed tomography were analyzed.</p><p><strong>Results: </strong>The Jac-mean of IPF patients (-0.19, [IQR: -0.22, -0.15]) decreased (absolute value), compared with healthy controls (-0.28, [IQR: -0.31, -0.24], P<0.001). The lung elasticity in IPF patients with dyspnea MRC≥3 (Jac-mean: -0.15; Dice: 0.06) was significantly lower than MRC 1 (Jac-mean: -0.22, P=0.001; Dice: 0.10, P=0.001) and MRC 2 (Jac-mean: -0.21, P=0.007; Dice: 0.09, P<0.001). In addition, the Jac-mean negatively correlated with forced vital capacity % (r=-0.487, P<0.001), forced expiratory volume 1% (r=-0.413, P=0.004), TLC% (r=-0.488, P<0.001), diffusing capacity of the lungs for carbon monoxide % predicted (r=-0.555, P<0.001), 6-minute walk distance (r=-0.441, P=0.030) and positively correlated with respiratory symptoms (r=0.430, P=0.042). Meanwhile, the Dice similarity coefficient positively correlated with forced vital capacity % (r=0.577, P=0.004), forced expiratory volume 1% (r=0.526, P=0.012), diffusing capacity of the lungs for carbon monoxide % predicted (r=0.435, P=0.048), 6-minute walk distance (r=0.473, P=0.016), final peripheral oxygen saturation (r=0.534, P=0.004), the extent of fibrosis on chest computed tomography (r=-0.421, P=0.021) and negatively correlated with activity (r=-0.431, P=0.048).</p><p><strong>Conclusion: </strong>Lung elasticity decreased in IPF patients and correlated with dyspnea, exercise tolerance, health-related quality of life, lung function, and the extent of pulmonary fibrosis. The lung elasticity based on elastic registration of 3D-PMRI may be a new nonradiation imaging biomarker for quantitative evaluation of the severity of IPF.</p>","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/31/aa/rti-38-358.PMC10597429.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41149345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Differentiating Imaging Features of Post-lobectomy Right Middle Lobe Torsion.","authors":"Farah Tamizuddin,&nbsp;Selin Ocal,&nbsp;Danielle Toussie,&nbsp;Lea Azour,&nbsp;Maj Wickstrom,&nbsp;William H Moore,&nbsp;Amie Kent,&nbsp;James Babb,&nbsp;Kush Fansiwala,&nbsp;Eric Flagg,&nbsp;Jane P Ko","doi":"10.1097/RTI.0000000000000736","DOIUrl":"https://doi.org/10.1097/RTI.0000000000000736","url":null,"abstract":"<p><strong>Purpose: </strong>The purpose of this study was to identify differences in imaging features between patients with confirmed right middle lobe (RML) torsion compared to those suspected yet without torsion.</p><p><strong>Materials and methods: </strong>This retrospective study entailing a search of radiology reports from April 1, 2014, to April 15, 2021, resulted in 52 patients with suspected yet without lobar torsion and 4 with confirmed torsion, supplemented by 2 additional cases before the search period for a total of 6 confirmed cases. Four thoracic radiologists (1 an adjudicator) evaluated chest radiographs and computed tomography (CT) examinations, and Fisher exact and Mann-Whitney tests were used to identify any significant differences in imaging features (P<0.05).</p><p><strong>Results: </strong>A reversed halo sign was more frequent for all readers (P=0.001) in confirmed RML torsion than patients without torsion (83.3% vs. 0% for 3 readers, one the adjudicator). The CT coronal bronchial angle between RML bronchus and bronchus intermedius was larger (P=0.035) in torsion (121.28 degrees) than nontorsion cases (98.26 degrees). Patients with torsion had a higher percentage of ground-glass opacity in the affected lobe (P=0.031). A convex fissure towards the adjacent lobe on CT (P=0.009) and increased lobe volume on CT (P=0.001) occurred more often in confirmed torsion.</p><p><strong>Conclusion: </strong>A reversed halo sign, larger CT coronal bronchial angle, greater proportion of ground-glass opacity, fissural convexity, and larger lobe volume on CT may aid in early recognition of the rare yet highly significant diagnosis of lobar torsion.</p>","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41153752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Case of Placental Transmogrification of Bilateral Lung","authors":"Mariko Kumazawa, Hiroaki Arakawa, Takahiro Nakajima, Masayuki Chida, Yoshimasa Nakazato","doi":"10.1097/rti.0000000000000737","DOIUrl":"https://doi.org/10.1097/rti.0000000000000737","url":null,"abstract":"Kumazawa, Mariko MD*; Arakawa, Hiroaki MD*; Nakajima, Takahiro MD†; Chida, Masayuki MD†; Nakazato, Yoshimasa MD‡ Author Information","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135498248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cardiothoracic Radiologist Workload, Work Capacity, and Burnout Post-COVID: Results of a Survey From the Society of Thoracic Radiology.","authors":"Cristopher A Meyer,&nbsp;Jeffrey S Klein,&nbsp;Rokas Liubauskas,&nbsp;Sanjeev Bhalla,&nbsp;Ronald L Eisenberg","doi":"10.1097/RTI.0000000000000710","DOIUrl":"https://doi.org/10.1097/RTI.0000000000000710","url":null,"abstract":"<p><p>In this report and analysis of the results of a late 2021 post-COVID pandemic survey of members of the Society of Thoracic Radiology, we compared cardiothoracic radiologist workloads and burnout rates with those obtained from a prepandemic survey of society members. The more recent survey also asked respondents to provide a subjective assessment of their individual workload capacity should they be required to read cases at a section average daily case work volume, and this assessment was correlated with burnout rates. To measure nonrelative value unit workload, we requested data on non-case-related work responsibilities including teaching and multidisciplinary conferences that were not assessed in the first survey. In addition, we asked respondents to provide information on the availability of support services, personnel, and hardware and software tools that could improve work efficiency and reduce radiologist stress levels thereby mitigating burnout. We found that postpandemic case workload and cardiothoracic radiologists' burnout rates were similarly high compared with prepandemic levels with an overall burnout rate of 88% including a 100% burnout rate among women which had significantly increased. The range of radiologists' workload capacity is broad, although 80% of respondents reported that reading at an average sectional case volume was at or above their capacity, and the perceived capacity correlated with burnout measures. The presence of fellows and computer-aided diagnosis/artificial intelligence tools were each associated with significant decreases in burnout, providing 2 potential strategies that could be employed to address high cardiothoracic radiologist burnout rates.</p>","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10036764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Diagnostic Guidelines for Usual Interstitial Pneumonia and Progressive Pulmonary Fibrosis.","authors":"Andrea S Oh,&nbsp;David A Lynch","doi":"10.1097/RTI.0000000000000723","DOIUrl":"10.1097/RTI.0000000000000723","url":null,"abstract":"","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10412040","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Respiratory Invariant Textures From Static Computed Tomography Scans for Explainable Lung Function Characterization.","authors":"Yu-Hua Huang,&nbsp;Xinzhi Teng,&nbsp;Jiang Zhang,&nbsp;Zhi Chen,&nbsp;Zongrui Ma,&nbsp;Ge Ren,&nbsp;Feng-Ming Spring Kong,&nbsp;Hong Ge,&nbsp;Jing Cai","doi":"10.1097/RTI.0000000000000717","DOIUrl":"10.1097/RTI.0000000000000717","url":null,"abstract":"<p><strong>Purpose: </strong>The inherent characteristics of lung tissue independent of breathing maneuvers may provide fundamental information for function assessment. This paper attempted to correlate textural signatures from computed tomography (CT) with pulmonary function measurements.</p><p><strong>Materials and methods: </strong>Twenty-one lung cancer patients with thoracic 4-dimensional CT, DTPA-single-photon emission CT ventilation ( VNM ) scans, and available spirometry measurements (forced expiratory volume in 1 s, FEV 1 ; forced vital capacity, FVC; and FEV 1 /FVC) were collected. In subregional feature discovery, function-correlated candidates were identified from 79 radiomic features based on the statistical strength to differentiate defected/nondefected lung regions. Feature maps (FMs) of selected candidates were generated on 4-dimensional CT phases for a voxel-wise feature distribution study. Quantitative metrics were applied for validations, including the Spearman correlation coefficient (SCC) and the Dice similarity coefficient for FM- VNM spatial agreement assessments, intraclass correlation coefficient for FM interphase robustness evaluations, and FM-spirometry comparisons.</p><p><strong>Results: </strong>At the subregion level, 8 function-correlated features were identified (effect size>0.330). The FMs of candidates yielded moderate-to-strong voxel-wise correlations with the reference VNM . The FMs of gray level dependence matrix dependence nonuniformity showed the highest robust (intraclass correlation coefficient=0.96 and P <0.0001) spatial correlation, with median SCCs ranging from 0.54 to 0.59 throughout the 10 breathing phases. Its phase-averaged FM achieved a median SCC of 0.60, a median Dice similarity coefficient of 0.60 (0.65) for high (low) functional lung volumes, and a correlation of 0.565 (0.646) between the spatially averaged feature values and FEV 1 (FEV 1 /FVC).</p><p><strong>Conclusions: </strong>The results provide further insight into the underlying association of specific pulmonary textures with both local ( VNM ) and global (FEV 1 /FVC, FEV 1 ) functions. Further validations of the FM generalizability and the standardization of implementation protocols are warranted before clinically relevant investigations.</p>","PeriodicalId":49974,"journal":{"name":"Journal of Thoracic Imaging","volume":null,"pages":null},"PeriodicalIF":3.3,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10037349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}