Effect of position and time held in that position on ground-glass opacity in computed tomography images of dogs

2017 ◽  
Vol 78 (3) ◽  
pp. 279-288 ◽  
Author(s):  
Sang-Kwon Lee ◽  
Seungjo Park ◽  
Byunggyu Cheon ◽  
Sohyeon Moon ◽  
Sunghwa Hong ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Ground Glass Opacity ◽  
Ground Glass ◽  
Computed Tomography Images

scholarly journals Characteristics of chest high resolution computed tomography images of COVID-19: A retrospective study of 46 patients

2021 ◽  
Vol 37 (3) ◽  
Author(s):  
Yibo Lu ◽  
Jingru Zhou ◽  
Yimei Mo ◽  
Shulin Song ◽  
Xue Wei ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Retrospective Study ◽  
High Resolution ◽  
Ground Glass Opacity ◽  
Ct Images ◽  
Ground Glass ◽  
High Resolution Computed Tomography ◽  
Creative Commons ◽  
Computed Tomography Images ◽  
Clinical Records

Objective: To analyze the characteristics of chest high resolution computed tomography (CT) images of coronavirus disease 2019 (COVID-19). Methods: This is a retrospective study analyzing the clinical records and chest high-resolution CT images of 46 consecutive patients who were diagnosed with COVID-19 by nucleic acid tests and treated at our hospitals between January 2020 and February 2020. Results: Abnormalities in the CT images were found in 44 patients (95.6%). The lesions were unilateral in eight patients (17.4%), bilateral in 36 patients (78.3%), single in seven patients (15.9%), and multiple in 37 patients (84.1%). The morphology of the lesions was scattered opacity in 10 patients (21.7%), patchy opacity in 38 patients (82.6%), fibrotic cord in 17 patients (37.0%), and wedge-shaped opacity in two patients (4.3%). The lesions can be classified as ground-glass opacity in eight patients (17.4%), consolidation in one patient (2.2%), and ground-glass opacity plus consolidation in 28 patients (60.9%). Conclusion: Most COVID-19 patients showed abnormalities in chest CT images and the most common findings were ground-glass opacity plus consolidation. Abbreviations:COVID-19: coronavirus disease 2019, CT: computed tomography,SARS-CoV-2: severe acute respiratory syndrome coronavirus 2, RNA: ribonucleic acid. doi: https://doi.org/10.12669/pjms.37.3.3504 How to cite this:Lu Y, Zhou J, Mo Y, Song S, Wei X, Ding K. Characteristics of Chest high resolution computed tomography images of COVID-19: A retrospective study of 46 patients. Pak J Med Sci. 2021;37(3):---------. doi: https://doi.org/10.12669/pjms.37.3.3504 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Pure ground-glass opacity on chest computed tomography: predictive factors for invasive adenocarcinoma

2016 ◽  
Vol 8 (7) ◽  
pp. 1561-1570 ◽  
Author(s):  
Youngkyu Moon ◽  
Sook Whan Sung ◽  
Kyo Young Lee ◽  
Sung Bo Sim ◽  
Jae Kil Park
Keyword(s):  
Computed Tomography ◽  
Predictive Factors ◽  
Ground Glass Opacity ◽  
Ground Glass ◽  
Invasive Adenocarcinoma ◽  
Chest Computed Tomography

Features Based on Thin-section Computed Tomography Identify the Typeof lung Adenocarcinoma

2020 ◽  
Author(s):  
Zhiqiang Li ◽  
Hongwei Zheng ◽  
Shanshan Liu ◽  
Xinhua Wang ◽  
Lei Xiao ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Lung Adenocarcinoma ◽  
Thin Section ◽  
Ground Glass Opacity ◽  
Smoking History ◽  
Ground Glass ◽  
Quantitative Aspect ◽  
Adenocarcinoma In Situ ◽  
Invasive Adenocarcinoma ◽  
Pleural Invasion

Abstract Background: To investigate whether thin-section computed tomography (TSCT) features may efficiently guide the invasiveness basedclassification of lung adenocarcinoma. Methods: Totally, 316 lung adenocarcinoma patients (from 2011-2015) were divided into three groups: 56 adenocarcinoma in situ (AIS), 98 minimally invasive adenocarcinoma (MIA), and 162 invasive adenocarcinoma (IAC) according their pathological results. Their TSCT features, including nodule pattern, shape, pleural invasion, solid proportion, border, margin, vascular convergence, air bronchograms, vacuole sign, pleural indentation, diameter, solid diameter, and CT values of ground-glass nodules (GGN) were analyzed. Pearson’s chi-square test, Fisher’s exact test and One-way ANOVA were adopted tocomparebetweengroups. Receiver operating characteristic (ROC) analysis wereperformedto assess its value for prediction and diagnosis. Results: Patients with IAC were significantly elder than those in AIS or MIA group,and more MIA patients had a smoking history than AIS and IAC. No recurrence happened in the AIS and MIA groups, while 4.3% recurrences were confirmed in the IAC group. As for TSCT variables, we found AIS group showed dominantly higher 91.07%PGGN pattern and 87.50% round/oval nodules than that in MIA and IAC group. In contrast, MIA group showed more cases with undefined border and vascular convergence than AIS and IAC group. Importantly, IAC group uniquely showed higher frequency of pleural invasion compared with MIA and AIS group. The majority of patients (82.1%) in IAC group showed ≥ 50% solid proportion. We found diameter and solid diameter of the lesions were notably larger in the IAC group compared with AIS and MIA groupin quantitative aspect. In addition, for MGGNs, the CT values of ground-glass opacity (GGO) and ground-glass opacity solid portion (GGO-solid) were both higher in the IAC group than AIS and MIA. Finally, we also observed that smooth margin took a dominant proportion in the AIS group while most cases in the IAC group had a lobulate margin. Patients in MIA and IAC group shared higher level of air bronchograms and vacuole signs than AIS group. Conclusions: The unique features in different groups identified by TSCT had diagnosis value for lung adenocarcinoma.

Investigation of optimal viewing size for detecting nodular ground-glass opacity on high-resolution computed tomography with cine-mode display

2010 ◽  
Vol 4 (1) ◽  
pp. 13-18 ◽  
Author(s):  
Michihiro Yamaguchi ◽  
Yuichi Bessho ◽  
Tatsuro Inoue ◽  
Yoshiyuki Asai ◽  
Tomoshige Matsumoto ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Ground Glass Opacity ◽  
Ground Glass ◽  
High Resolution Computed Tomography
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