Implementation of a Deep Learning-Based Computer-Aided Detection System for the Interpretation of Chest Radiographs in Patients Suspected for COVID-19.

Implementation of a Deep Learning-Based Computer-Aided Detection System for the Interpretation of Chest Radiographs in Patients Suspected for COVID-19. Korean J Radiol. 2020 Jul 17;: Authors: Hwang EJ, Kim H, Yoon SH, Goo JM, Park CM Abstract OBJECTIVE: To describe the experience of implementing a deep learning-based computer-aided detection (CAD) system for the interpretation of chest X-ray radiographs (CXR) of suspected coronavirus disease (COVID-19) patients and investigate the diagnostic performance of CXR interpretation with CAD assistance. MATERIALS AND METHODS: In this single-center retrospective study, initial CXR of patients with suspected or confirmed COVID-19 were investigated. A commercialized deep learning-based CAD system that can identify various abnormalities on CXR was implemented for the interpretation of CXR in daily practice. The diagnostic performance of radiologists with CAD assistance were evaluated based on two different reference standards: 1) real-time reverse transcriptase-polymerase chain reaction (rRT-PCR) results for COVID-19 and 2) pulmonary abnormality suggesting pneumonia on chest CT. The turnaround times (TATs) of radiology reports for CXR and rRT-PCR results were also evaluated. RESULTS: Among 332 patients (male:female, 173:159; mean age, 57 years) with available rRT-PCR results, 16 patients (4.8%) were diagnosed with COVID-19. Using CXR, radiologists with CAD assistance identified rRT-PCR positive COVID-19 patie...
Source: Korean Journal of Radiology - Category: Radiology Tags: Korean J Radiol Source Type: research

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We report three patients with history of fever and different clinical signs. During the height of the pandemic in Italy (March to May 2020), these patients underwent chest computed tomography (CT) scans that showed lung alterations typical of COVID-19 with multiple negative RT-PCR tests and positive serology for SARS-CoV-2.
Source: Radiography - Category: Radiology Authors: Tags: Case report Source Type: research
h H Abstract CLINICAL ISSUE: Since its emergence in late 2019, the disease caused by the novel coronavirus, termed COVID-19, has been declared a pandemic by the World Health Organization. Reference standard for the diagnosis of COVID-19 is a positive reverse transcription polymerase chain reaction (RT-PCR) test. While the RT-PCR shows a high specificity, its sensitivity depends on the duration of symptoms, viral load, quality of the sample, and the assay used. STANDARD RADIOLOGICAL METHODS: Chest radiography and computed tomography (CT) of the chest are the imaging modalities primarily used for...
Source: Der Radiologe - Category: Radiology Authors: Tags: Radiologe Source Type: research
CONCLUSIONS: We recommend extreme caution in using CP in critically ill patients more than 2 weeks after the onset of COVID-19 pneumonia. PMID: 32770691 [PubMed - as supplied by publisher]
Source: Transfusion - Category: Hematology Authors: Tags: Transfusion Source Type: research
ConclusionIt seems unnecessary to perform chest imaging in children to diagnose COVID-19. Chest radiography can be used in symptomatic children to assess airway infection or pneumonia. CT should be reserved for when there is clinical concern to assess for possible complications, especially in children with coexisting medical conditions.
Source: Pediatric Radiology - Category: Radiology Source Type: research
Coronavirus Disease 2019 (COVID-19) has caused a large number of related deaths and multiple healthcare associated outbreaks [1,2,3,4]. Investigators have summarized the clinical characteristics of patients with initial onset [3,4], in which, some had atypical clinical manifestations, e.g., severe patients merely had moderate or low fever or even no fever [5], while some mild patients may not have pneumonia and only had low fever or mild fatigue [5,6]. One report revealed that no radiographic or CT abnormalities were found in 17.9% of non-severe patients and in 2.9% of severe patients [6].
Source: International Journal of Infectious Diseases - Category: Infectious Diseases Authors: Source Type: research
Conclusions: On the whole, the children were previously healthy and are more than 1 year old. Respiratory symptoms were the leading cause of PICU admission, making respiratory support the principal therapy. Patients requiring mechanical ventilation showed deterioration on the first day of admission. These children seemed to require close monitoring, and multicenter studies are necessary.
Source: Pediatric Critical Care Medicine - Category: Pediatrics Tags: Online Brief Reports Source Type: research
Authors: Jung HK, Kim JY, Lee MS, Lee JY, Park JS, Hyun M, Kim HA, Kwon YS, Choi SW, Moon SM, Suh YJ Abstract OBJECTIVE: We investigated the prevalence of pneumonia in novel coronavirus disease 2019 (COVID-19) patients using chest radiographs to identify the characteristics of those with initially negative chest radiographs, who were positive for pneumonia on follow-up. MATERIALS AND METHODS: Retrospective cohort data of 236 COVID-19 patients were reviewed. Chest radiography was performed on admission, with serial radiographs obtained until discharge. The 'positive conversion group' was defined as patients whos...
Source: Korean Journal of Radiology - Category: Radiology Tags: Korean J Radiol Source Type: research
Conclusion: If the gap in identifying of all viral pneumonias is not filled with effective automation of chest disease detection the healthcare industry may have to bear unfavorable circumstances. PMID: 32624700 [PubMed - in process]
Source: International Journal of Medical Sciences - Category: Biomedical Science Tags: Int J Med Sci Source Type: research
In this study, we aimed to investigate whether obesity played a role in clinical manifestations and prognosis in patients infected with SARS-CoV-2.MethodsThis is a retrospective multicenter clinical study. A total of 96 patients hospitalized with SARS-CoV-2 infection were enrolled from Dongguan People ’s Hospital, Nanfang hospital and the First Affiliated Hospital of Xiamen University between 23 January and 14 February 2020. Demographic and clinical data were extracted from medical records. Acute respiratory distress syndrome (ARDS) was defined as oxygenation index (PaO2/FiO2)  ≤ 300 mmHg. We ...
Source: Infectious Diseases of Poverty - Category: Infectious Diseases Source Type: research
This article aimed to demonstrate the chest imaging findings of COVID-19 on different modalities: chest radiography, computed tomography, and ultrasonography. In addition, it intended to review recommendations on imaging assessment of COVID-19 and to discuss the use of a structured chest computed tomography report. Chest radiography, despite being a low-cost and easily available method, has low sensitivity for screening patients. It can be useful in monitoring hospitalized patients, especially for the evaluation of complications such as pneumothorax and pleural effusion. Chest computed tomography, despite being highly sens...
Source: Clinics - Category: General Medicine Source Type: research
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