{"title":"Diagnostic value of ground-glass opacity in suspected coronavirus disease 2019 patients: A meta-analysis","authors":"Yan-An Zhu, Cui-Qing Yan, Ya-Ni Duan, Lei-lei Tang, Jun-ying Zhu, Xiuzheng Chen, Yun-xu Dong, Weimin Liu, Wenjie Tang, Yuefei Guo, J. Qin","doi":"10.4103/RID.RID_7_21","DOIUrl":"https://doi.org/10.4103/RID.RID_7_21","url":null,"abstract":"OBJECTIVE: The aim of the study was to evaluate the diagnostic efficiency of ground-glass opacity (GGO) for coronavirus disease 2019 (COVID-19) in suspected patients. MATERIALS AND METHODS: In this systematic review and meta-analysis, PubMed, Embase, Cochrane Library, Scopus, Web of Science, CNKI, and Wanfang databases were searched from November 01, 2019 to November 29, 2020. Studies providing the diagnostic test accuracy of chest computed tomography (CT) and description of detailed CT features for COVID-19 were included. Data were extracted from the publications. The sensitivity, specificity, and summary receiver operating characteristic curves were pooled. Heterogeneity was detected across included studies. RESULTS: Eleven studies with 1618 cases were included. The pooled sensitivity, specificity and area under the curve were 0.74 (95% confidence interval [CI], 0.61–0.84), 0.52 (95% CI, 0.33–0.70), and 0.70 (95% CI, 0.66–0.74), respectively. There was obvious heterogeneity among included studies (P < 0.05). Differences in the study region, inclusion criteria, research quality, or research methods might have contributed to the heterogeneity. The included studies had no significant publication bias (P > 0.1). CONCLUSIONS: COVID-19 was diagnosed not only by GGO with a medium level of diagnostic accuracy but also by white blood cell counts, epidemic history, and revers transcription-polymerase chain reaction testing.","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"49 1","pages":"31 - 41"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81146714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lemierre's syndrome secondary to Streptococcus pneumoniae oropharyngeal infection","authors":"WilliamH. S. Spiller, D. Leger","doi":"10.4103/rid.rid_19_21","DOIUrl":"https://doi.org/10.4103/rid.rid_19_21","url":null,"abstract":"","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90898860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Lesion types, pathogenesis, pathological manifestations, and imaging findings of cardiovascular complications induced by coronavirus disease 2019: Current status","authors":"Feiran Yu, Qimin Zhou, Dexin Yu","doi":"10.4103/RID.RID_6_21","DOIUrl":"https://doi.org/10.4103/RID.RID_6_21","url":null,"abstract":"The coronavirus disease 2019 (COVID-19) has formed a worldwide pandemic trend. Despite the virus usually invades lungs and presents with various respiratory symptoms, it can also affect the cardiac function in multiple ways and result in high mortality. Various possible mechanisms have been proposed to explain these manifestations at present, including cytokine storm and direct invasion of the virus. There are a series of feasible schemes in clinical work to reduce the incidence of complications now, but the layered management of hospitalized patients, the early prevention, and the early detection of complications seem to be more important. Cardiac imaging examinations (such as computed tomography coronary angiography, magnetic resonance imaging multi-parameter scan, and enhanced scan, etc.) are very essential in these aspects. However, radiological data of the cardiac complications are not comprehensive enough in accessing the prognosis due to the limitation of examination. This paper summarized the imaging findings of cardiac complications of COVID-19, providing the possible morphological basis or hypothesis for cardiac multimode imaging by analyzing the pathological manifestations retrospectively.","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"21 1","pages":"45 - 53"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79960065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Shalaka, Najah Gurad, Salam Alawasi, Nuha R Mansour, Ala Ali, Khaled Elobidy, Mohamed Algumati, Hossam Swisi, Elham Elhshik, Ziyad Mukhtar, Alfitouri Abojamra
{"title":"The diagnostic performance of chest computed tomography scanning in the diagnosis of coronavirus disease 2019 compared to polymerase chain reaction: A retrospective study of 1240 cases from Tripoli University Hospital, Libya","authors":"N. Shalaka, Najah Gurad, Salam Alawasi, Nuha R Mansour, Ala Ali, Khaled Elobidy, Mohamed Algumati, Hossam Swisi, Elham Elhshik, Ziyad Mukhtar, Alfitouri Abojamra","doi":"10.4103/RID.RID_4_21","DOIUrl":"https://doi.org/10.4103/RID.RID_4_21","url":null,"abstract":"OBJECTIVE: The increasing prevalence of suspected cases of coronavirus disease 2019 (COVID-19) presenting to emergency departments (EDs) requires a rapid and reliable triaging tool. The diagnostic performance of chest computed tomography (CT) has yet to be validated for triaging cases in the ED. We aimed to assess the diagnostic performance of chest CT compared to GeneXpert Xpress Xpert severe acute respiratory syndrome coronavirus 2 test in rapidly diagnosing COVID-19 among patients with respiratory symptoms presenting to the ED. MATERIALS AND METHODS: This was a retrospective, single-center study at Tripoli University Hospital including cases with respiratory symptoms who underwent chest CT as well as polymerase chain reaction (PCR) testing for suspected COVID-19 between May 18 and August 18, 2020. RESULTS: A total of 1240 cases were included, among whom 570 had radiologically evident COVID-19 on chest CT (46%). Five hundred and sixty-five cases had positive PCR results (45.6%), of whom 557 had radiologically evident COVID-19 on chest CT (97.7%). The calculated accuracy, sensitivity, specificity, positive predictive value, and negative predictive value were 98%, 98.5%, 98%, 97.7%, and 98.8%, respectively, in relation to the PCR results. CONCLUSION: During the current pandemic, chest CT is a quick and reliable diagnostic tool for COVID-19 in the ED.","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"30 1","pages":"25 - 30"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88552562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An artificial intelligence-based radiomics model for differential diagnosis between coronavirus disease 2019 and other viral pneumonias","authors":"Mudan Zhang, Wuchao Li, Xuntao Yin, Xianchun Zeng, Xinfeng Liu, Xiaochun Zhang, Qi Chen, Chencui Huang, Zhen Zhou, Rongpin Wang","doi":"10.4103/RID.RID_1_21","DOIUrl":"https://doi.org/10.4103/RID.RID_1_21","url":null,"abstract":"OBJECTIVE: To set up a differential diagnosis radiomics model to identify coronavirus disease 2019 (COVID-19) and other viral pneumonias based on an artificial intelligence (AI) approach that utilizes computed tomography (CT) images. MATERIALS AND METHODS: This retrospective multi-center research involved 225 patients with COVID-19 and 265 patients with other viral pneumonias. The least absolute shrinkage and selection operator algorithm was used for the optimized features selection from 1218 radiomics features. Finally, a logistic regression (LR) classifier was applied to construct different diagnosis models. The receiver operating characteristic curve analysis was applied to evaluate the accuracy of different models. RESULTS: The patients were divided into a training set (313 of 392, 80%), an internal test set (79 of 392, 20%) and an external test set (n = 98). Thirteen features were selected to build the machine learning-based CT radiomics models. LR classifiers performed well in the training set (area under the curve [AUC] = 0.91), internal test set (AUC = 0.94), and external test set (AUC = 0.91). Delong tests suggested there was no significant difference between training and the two test sets (P > 0.05). CONCLUSION: The use of an AI-based radiomics model enables rapid discrimination of patients with COVID-19 from other viral infections, which can aid better surveillance and control during a pneumonia outbreak.","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"9 1","pages":"1 - 8"},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78694812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Major events in the development of infectious disease radiology","authors":"Meiji Ren, Honjun Li","doi":"10.1016/j.jrid.2020.11.002","DOIUrl":"10.1016/j.jrid.2020.11.002","url":null,"abstract":"<div><p>With the rapid development of modern visual imaging technology, the changes to Peoples life and work patterns in the information age, a series of alterations in the spectrum of diseases have resulted in the emergence of an independent patient group of infectious diseases. The birth of the groups imaging theory system, guideline, standards, and diagnostic and treatment technology platform, followed by the emergence of an innovative discipline-the international infectious diseases imaging discipline construction system, including the aspects detailed below.</p></div>","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"7 4","pages":"Pages 170-175"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jrid.2020.11.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85178558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yue Zhao , Yue Wang , Wenshuai Duan , Wei Du , Xinhua Wu , Bin Yang
{"title":"Low-dose chest CT presentation and dynamic changes in patients with novel coronavirus disease 2019","authors":"Yue Zhao , Yue Wang , Wenshuai Duan , Wei Du , Xinhua Wu , Bin Yang","doi":"10.1016/j.jrid.2020.08.001","DOIUrl":"10.1016/j.jrid.2020.08.001","url":null,"abstract":"<div><h3>Objective</h3><p>To investigate the low-dose chest computed tomography (CT) presentation and dynamic changes in patients with novel coronavirus disease 2019 (COVID-19) to improve understanding of this highly infectious disease.</p></div><div><h3>Methods</h3><p>The clinical and CT data of 16 patients with COVID-19 were retrospectively analyzed. Dynamic CTs were performed continuously after admission.</p></div><div><h3>Results</h3><p>Of the patients, 14 were moderate cases, and 2 were severe. Twelve patients underwent CT at the early onset stage. Single nodules or ground-glass opacities (GGOs) were found in 2 patients and multiple bilateral pulmonary lesions in 8 (consolidation-like opacities with or without small nodules in five and large GGOs with interlobular septal thickening in three). Ten had lesion growth and enlargement on the second CT. Fourteen patients underwent CT during the progressive stage, which revealed GGOs and focal consolidation in 6 of them, lung consolidation opacities in 5, and simple, large GGOs with interlobular septal thickening in 3. In both severe cases, the lesions continued to enlarge and grow, and the extent of consolidation continued to expand.</p></div><div><h3>Conclusion</h3><p>Low-dose chest CT can clearly reflect the morphology, density, and extent of COVID-19 nodules, and is beneficial for observing dynamic nodule changes and disease screening and monitoring.</p></div>","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"7 4","pages":"Pages 186-194"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jrid.2020.08.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"25316654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Granulomatous amoebic encephalitis presenting as a solitary mass lesion","authors":"Nian Xia Fu, Jianxun Song, Xu Huang, Guo Hui Lin","doi":"10.1016/j.jrid.2020.09.001","DOIUrl":"10.1016/j.jrid.2020.09.001","url":null,"abstract":"<div><p>Granulomatous amoebic encephalitis is a rare progressive infectious disease of the central nervous system with a high mortality rate. It usually presents as multiple ring-enhancing lesions in the brain with surrounding edema evident, while the granulomatous amoeba encephalitis reported in this case is manifested as a solitary mass in the right frontal lobe mimicking intracranial tumors. For the same disease with different imaging manifestations, clinical diagnosis of granulomatous amoeba encephalitis is difficult and may delay the diagnosis and treatment, resulting in increased mortality. The purpose of this article is to raise awareness of this disease and avoid misdiagnosis, given that early diagnosis is crucial for the correct treatment of patients.</p></div>","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"7 4","pages":"Pages 204-207"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jrid.2020.09.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79128244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The imaging diagnostic criteria of acquired immunodeficiency syndrome associated with primary central nervous system lymphoma","authors":"Hanqiu Liu , Hongjun Li","doi":"10.1016/j.jrid.2020.11.001","DOIUrl":"10.1016/j.jrid.2020.11.001","url":null,"abstract":"<div><p>Acquired immune deficiency syndrome (AIDS) related primary central nervous system lymphoma (PCNSL) has unique imaging characteristics. Based on the cases fro; literature and latest research evidence, we formed an updated imaging diagnostic recommendation. MRI with and without contrast media is the strongly recommended imaging technique for AIDS-related PCNSL. Imaging signs or findings are summarized as follows: three high indexes, increased diffusion weighted imaging (DWI) signal in solid parts of the tumor, high density of CT without contrast media, and basically uniform enhancement; two low indexes, hypo-intensity of apparent diffusion coefficient (ADC) maps, iso-or hypo-intensity of T1WI without contrast media and T2WI. Three common indexes, mostly located in the midline area of the brain, often manifesting as multiple cystic changes. The special MRI enhancement was characterized by “Notch sign” “Sharp Angle sign” “Snow-holding sign” and “Jagged or Spinous shape”. For clinically suspected cases, if the imaging findings meet the above imaging findings, it can be used as the imaging diagnostic criteria for the diagnosis of AIDS-related PCNSL. The diagnostic criteria can provide clinicians with abundant and accurate diagnostic information with clear diagnostic basis, which can effectively improve the early diagnosis of AIDS-related PCNSL. It helps to form the best decision-making scheme and to achieve the purpose of early and precise treatment.</p></div>","PeriodicalId":101055,"journal":{"name":"Radiology of Infectious Diseases","volume":"7 4","pages":"Pages 149-159"},"PeriodicalIF":0.0,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.jrid.2020.11.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78259207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}