scholarly journals Coronavirus Disease-2019 Pneumonia

2021 ◽  
Author(s):  
Rashid S. Al Umairi ◽  
Ishaq Al Salmi ◽  
Jokha Al Kalbani ◽  
Atheel Kamona ◽  
Saqar Al Tai ◽  
...  
Keyword(s):  
Ground Glass Opacity ◽  
Chest Radiographs ◽  
Ground Glass ◽  
Common Finding ◽  
Radiographic Examination ◽  
Type I ◽  
Lung Field ◽  
X Ray ◽  
Type Iv ◽  
Chest X Ray

Objectives: The aim of this study is to assess the correlation between the severity of the initial chest x-ray abnormalities in patients with confirmed diagnosis of coronavirus disease 2019 (COVID-19) and the final outcomes. Methods: Retrospectively, we identified serial chest radiographs of 64 patients (57 men, 7 women, with mean age of 50 years) admitted to the Royal Hospital between March 15, 2020 and May 30, 2020 with confirmed diagnosis of COVID-19. The chest radiographs were examined for presence, extent, distribution and progression pattern of radiological abnormalities. Each lung field was divided into 3 zones on each CXR and a score was allocated for each zone. The scores (0 [normal], 1 [mild] to 4 [severe]) for all six zones per chest radiographic examination were summed to provide a cumulative chest radiographic score (range, 0–24). Results: The initial CXR was abnormal in 60 patients (93.8%). The most common finding was ground glass opacity (58/64, 90.6%), followed by consolidation (50/64, 78.1%). The majority of the patients had bilateral (51/64, 85%), multifocal (57/64 95%) combined central and peripheral (36/64, 60%) lung abnormalities. The median score of initial CXR for deceased patients was significantly higher than those who recovered (17 vs 11 respectively; P = 0.009). Five CXR evolution patterns were identified: type I (initial radiograph deteriorates then improves), type II (fluctuate), type III (static), type IV (progressive deterioration) and type V (progressive improvement). Conclusion: Higher baseline chest radiograph score is associated with higher mortality rate and poor prognosis in those with COVID-19 pneumonia. Keywords: SARS-CoV-2; COVID-19; Chest X-ray; Scoring System; Pneumonia; Prognosis; Outcome; Severity; Consolidation; Ground-glass.

Chest X-Rays Findings in Patients Positive for COVID 19 at Sheikh Zayed Hospital Lahore

2021 ◽  
Vol 15 (5) ◽  
pp. 1196-1199
Author(s):  
A. Z. Sheikh ◽  
Z. Tariq ◽  
S. Noor ◽  
A. Ambreen ◽  
S. Awan ◽  
...  
Keyword(s):  
Ground Glass Opacity ◽  
British Society ◽  
Ground Glass ◽  
Care Hospital ◽  
X Rays ◽  
Middle Zone ◽  
Rt Pcr ◽  
Thoracic Imaging ◽  
X Ray ◽  
Chest X Ray

Aim: To assess the results of chest x ray radiographs of patients positive for Covid-19, presented at the tertiary care hospital according to the classification by the British Society of Thoracic Imaging (BSTI. Place and Duration: In COVID-19 Ward (Department of Medicine) Sheikh Zayed Hospital, Lahore for three months duration from January 2021 to March 2021. Methods: A total of 96 patients were selected. In this observational study, positive COVID-19 patient determined by the reverse transcriptase polymerase chain reaction (RT-PCR) were enrolled for this study above the age of 14 years. CXR results were classified conferring to BSTI documentation and classification in terms of percentage and frequency. Results: Chest rays of 96 patients who tested positive for Covid-19 by RT-PCR over the age of 14 years were examined. Chest X-rays are classified according to the BSTI Covid-19 X-ray classification. Out of 96 patients, 10 patients (10.41%) had normal chest x-rays, 19 (19.80%) patients had classic bilateral, peripheral and basal consolidation / ground glass opacity (GMO), 60 (62.5%) had unspecified group,7(7.29%) patients have poor quality X-ray film. The unilateral involvement was noticed in 15 and bilateral in 49 patients, 12 of the patients had diffuse involvement on chest radiograph and peripheral involvement in 39 patients. According to regional dominance, 41 of the unspecified (42.70%) had middle and lower lung involvement, 7 (7.29%) had only the middle zone, and 8 (8.33%) had involvement of lower zone. Conclusions: In this study, Covid-19 chest X-rays are usually presented as ground glass opacity, mixed consolidation with GGOs in the middle and lower peripheral areas of the bilateral lung. Chest X-ray BSTI classification is used to classify Covid-19 severity in our patients, thus differentiating in the classic Covid-19 of the middle zone versus low zone involvement. Keywords: Consolidation, Covid, Ground Glass Opacity, Chest Image.

scholarly journals Evaluasi Dengan High Resolution Computed Tomography (HRCT) Setelah Infeksi Covid-19: Laporan Kasus di Rumah Sakit dr. Kariadi Semarang

2020 ◽  
Vol 7 (1A) ◽  
pp. 189-194
Author(s):  
Bambang Satoto ◽  
Maya Nuriya Widyasari ◽  
Apriansah Apriansah
Keyword(s):  
Severe Acute Respiratory Syndrome ◽  
The United States ◽  
Ground Glass ◽  
Normal Lung ◽  
Lung Field ◽  
Thoracic Imaging ◽  
X Ray ◽  
History Of ◽  
Chest X Ray

Pendahuluan SARS-CoV-2 merupakan virus RNA yang terutama menginfeksi sel-sel pada saluran napas pelapis alveoli. Virus SARS-CoV-2 yang terhirup mengikat sel epitel di rongga hidung dan mulai bereplikasi. Virus ini menyebar serta bermigrasi ke saluran pernapasan, memicu respons imun bawaan dan pada akhirnya berkembang menjadi Acute Respiratory Distress Syndrome (ARDS). Gambaran ground glass infiltrates dapat terdeteksi pada pencitraan toraks. Pemeriksaan X-ray toraks dan MSCT toraks memegang peranan penting dalam deteksi dan follow up COVID-19. Metode dan Bahan Laporan kasus 2 pasien laki-laki yang terkonfirmasi COVID-19 umur 43 tahun dan 48 tahun dengan keluhan utama sesak napas, batuk dan demam. Pasien pertama mempunyai riwayat perjalanan ke Amerika Serikat 3 minggu sebelum masuk rumah sakit, sedangkan pasien kedua mempunyai riwayat kontak dengan pasien terkonfirmasi COVID-19. Pada pemeriksaan X-ray toraks kedua pasien menunjukkan gambaran konsolidasi disertai air bronchogram pada lapangan paru bilateral yang tampak dominan pada perifer. Berdasarkan pedoman Severe Acute Respiratory Syndrome (SARS) terdahulu, evaluasi dapat dilakukan 2 bulan dan 6 bulan setelah terinfeksi. Dua bulan setelah terinfeksi COVID-19 dilakukan pemeriksaan HRCT toraks dengan hasil normal. Kesimpulan Lesi berupa konsolidasi disertai air bronchogram dengan distribusi yang dominan pada perifer merupakan gambaran radiologis yang khas pada pasien Covid-19 seperti yang ditemukan pada kedua kasus yang dipaparkan dalam artikel ini. Evaluasi sequele dengan pemeriksaan HRCT yang dilakukan 2 bulan pasca penyembuhan menunjukkan gambaran paru paru yang normal, tidak ada infiltrat maupun fibrosis pada kedua pasien tersebut. Kata kunci X-ray toraks, konsolidasi, air bronchogram, COVID-19   Introduction SARS-CoV-2 is an RNA virus that mainly infects cells in the alveoli lining airways. The inhaled virus binds to epithelial cells in the nasal cavity then begins to replicate. This virus spreads, migrates to the respiratory tract, triggering an innate immune response, and develop to Acute Respiratory Syndrome. The ground-glass opacities can be detected in thoracic imaging eventually. Chest X-ray and CT-scan have an important role in the detection and follow-up of COVID-19. Materials and Methods The case report of 2 male patients confirmed COVID-19 aged 43 years and 48 years with major complaints of shortness of breath, coughing, and fever. The first patient had a history of raveling to the United States 3 weeks before hospitalization, while the second patient had a history of contact with a confirmed COVID-19 patient. On chest X-ray examination, both patients showed multiple consolidation with air bronchogram in bilateral lung field which appeared dominant in the periphery. According to the previous Severe Acute Respiratory Syndrome (SARS) guideline, evaluation for patients can be done in two months and six months after firstly infected. Two months after COVID-19 infection, a chest HRCT examination was performed with normal results. Conclusion Consolidation with air bronchogram which dominantly seen in peripheral distribution is a typical radiological picture in COVID-19 patients as found in two cases described in this article. Sequelae evaluation with chest HRCT conducted 2 months after healing showed normal lung appearance with no sign of infiltrates or fibrosis seen in both patients. Keywords:  Chest X-ray, consolidation, air bronchogram, COVID-19

scholarly journals Efficacy of chest X-ray in the diagnosis of COVID-19 pneumonia: comparison with computed tomography through a simplified scoring system designed for triage

2021 ◽  
Vol 52 (1) ◽  
Author(s):  
Akın Çinkooğlu ◽  
Selen Bayraktaroğlu ◽  
Naim Ceylan ◽  
Recep Savaş
Keyword(s):  
Computed Tomography ◽  
Intensive Care ◽  
Intensive Care Units ◽  
Scoring System ◽  
Imaging Modality ◽  
Ground Glass Opacity ◽  
Initial Presentation ◽  
X Ray ◽  
Chest X Ray

Abstract Background There is no consensus on the imaging modality to be used in the diagnosis and management of Coronavirus disease 2019 (COVID-19) pneumonia. The purpose of this study was to make a comparison between computed tomography (CT) and chest X-ray (CXR) through a scoring system that can be beneficial to the clinicians in making the triage of patients diagnosed with COVID-19 pneumonia at their initial presentation to the hospital. Results Patients with a negative CXR (30.1%) had significantly lower computed tomography score (CTS) (p < 0.001). Among the lung zones where the only infiltration pattern was ground glass opacity (GGO) on CT images, the ratio of abnormality seen on CXRs was 21.6%. The cut-off value of X-ray score (XRS) to distinguish the patients who needed intensive care at follow-up (n = 12) was 6 (AUC = 0.933, 95% CI = 0.886–0.979, 100% sensitivity, 81% specificity). Conclusions Computed tomography is more effective in the diagnosis of COVID-19 pneumonia at the initial presentation due to the ease detection of GGOs. However, a baseline CXR taken after admission to the hospital can be valuable in predicting patients to be monitored in the intensive care units.

Przewlekły kaszel jako główna manifestacja chłoniaka Hodgkina – opis przypadku

2019 ◽  
Vol 23 (3) ◽  
Author(s):  
Katarzyna Wójcicka ◽  
Andrzej Pogorzelski
Keyword(s):  
Chronic Cough ◽  
Correct Diagnosis ◽  
Diagnostic Methods ◽  
Radiographic Examination ◽  
Older Children ◽  
X Ray ◽  
Volume Curve ◽  
Flow Volume Curve ◽  
Mediastinal Widening ◽  
Chest X Ray

A cough lasting longer than 4-8 weeks, defined as chronic cough, always requires thorough diagnostic evaluation. In addition to detailed history-taking and physical examination, simple and available diagnostic methods, such as chest x-ray and spirometry, should be performed. They may be helpful tool to establish the underlying cause of cough. Many younger children may have difficulties in performing the forced expiratory maneuvers and fulfilling repeatability criteria for spirometry. The disturbances resulting from insufficient cooperation should be considered in interpratation of the obtained results. The shape of the flow-volume curve, which suggests upper or central airways obstruction, can not be ignored and always requires further investigation for diagnosis of respiratory pathology. The chest x-ray is the most frequently performed radiographic examination in children. Accurate interpretation is essential in reaching a correct diagnosis. Mediastinal widening on the chest x-ray in children can occur due to a large variety of causes. The normal thymus can take on a variety of sizes and shapes and still be considered normal in the first few years of life. In older children mediastinal widening should be differentiated from mediastinal masses. Lymph node enlargement represents a frequent cause, usually as a result of infection or malignancy. The article reports a case of a 12-year-old boy with chronic cough, mediastinal widening on the chest X-ray and abnormal spirometry results, who was finally diagnosed with stage III Hodgkin’s lymphoma.

Entropy estimation of the fragments of chest X-ray images

2021 ◽  
pp. 20-26
Author(s):  
Aleksei Aleksandrovich Rumyantsev ◽  
Farkhad Mansurovich Bikmuratov ◽  
Nikolai Pavlovich Pashin
Keyword(s):  
Neural Network ◽  
Neural Networks ◽  
Binary Classification ◽  
Statistical Characteristics ◽  
Type I ◽  
Deep Convolutional Neural Networks ◽  
Preliminary Calculation ◽  
X Ray ◽  
The Matrix ◽  
Chest X Ray

The subject of this research is medical chest X-ray images. After fundamental pre-processing, the accumulated database of such images can be used for training deep convolutional neural networks that have become one of the most significant innovations in recent years. The trained network carries out preliminary binary classification of the incoming images and serve as an assistant to the radiotherapist. For this purpose, it is necessary to train the neural network to carefully minimize type I and type II errors. Possible approach towards improving the effectiveness of application of neural networks, by the criteria of reducing computational complexity and quality of image classification, is the auxiliary approaches: image pre-processing and preliminary calculation of entropy of the fragments. The article provides the algorithm for X-ray image pre-processing, its fragmentation, and calculation of the entropy of separate fragments. In the course of pre-processing, the region of lungs and spine is selected, which comprises approximately 30-40% of the entire image. Then the image is divided into the matrix of fragments, calculating the entropy of separate fragments in accordance with Shannon&rsquo;s formula based pm the analysis of individual pixels. Determination of the rate of occurrence of each of the 255 colors allows calculating the total entropy. The use of entropy for detecting pathologies is based on the assumption that its values differ for separate fragments and overall picture of its distribution between the images with the norm and pathologies. The article analyzes the statistical values: standard deviation of error, dispersion. A fully connected neural network is used for determining the patterns in distribution of entropy and its statistical characteristics on various fragments of the chest X-ray image.

Automatic detection method of lung cancers including ground-glass opacities from chest x-ray CT images

2002 ◽  
Author(s):  
Toshiharu Ezoe ◽  
Hotaka Takizawa ◽  
Shinji Yamamoto ◽  
Akinobu Shimizu ◽  
Tohru Matsumoto ◽  
...  
Keyword(s):  
Detection Method ◽  
Automatic Detection ◽  
Ct Images ◽  
Ground Glass ◽  
Lung Cancers ◽  
X Ray ◽  
Chest X Ray

scholarly journals The diagnostic value of chest X-ray in coronavirus disease 2019: A comparative study of X-ray and CT

2021 ◽  
Vol 104 (3) ◽  
pp. 003685042110162
Author(s):  
Fengxia Zeng ◽  
Yong Cai ◽  
Yi Guo ◽  
Weiguo Chen ◽  
Min Lin ◽  
...  
Keyword(s):  
Clinical Symptoms ◽  
Diagnostic Value ◽  
Rapid Identification ◽  
Chest Ct ◽  
Ct Scans ◽  
Ground Glass ◽  
X Ray ◽  
Chest X Ray ◽  
Laboratory Examinations ◽  
Sensitivity Specificity

As the coronavirus disease 2019 (COVID-19) epidemic spreads around the world, the demand for imaging examinations increases accordingly. The value of conventional chest radiography (CCR) remains unclear. In this study, we aimed to investigate the diagnostic value of CCR in the detection of COVID-19 through a comparative analysis of CCR and CT. This study included 49 patients with 52 CT images and chest radiographs of pathogen-confirmed COVID-19 cases and COVID-19-suspected cases that were found to be negative (non-COVID-19). The performance of CCR in detecting COVID-19 was compared to CT imaging. The major signatures that allowed for differentiation between COVID-19 and non-COVID-19 cases were also evaluated. Approximately 75% (39/52) of images had positive findings on the chest x-ray examinations, while 80.7% (42/52) had positive chest CT scans. The COVID-19 group accounted for 88.4% (23/26) of positive chest X-ray examinations and 96.1% (25/26) of positive chest CT scans. The sensitivity, specificity, and accuracy of CCR for abnormal shadows were 88%, 80%, and 87%, respectively, for all patients. For the COVID-19 group, the accuracy of CCR was 92%. The primary signature on CCR was flocculent shadows in both groups. The shadows were primarily in the bi-pulmonary, which was significantly different from non-COVID-19 patients ( p = 0.008). The major CT finding of COVID-19 patients was ground-glass opacities in both lungs, while in non-COVID-19 patients, consolidations combined with ground-glass opacities were more common in one lung than both lungs ( p = 0.0001). CCR showed excellent performance in detecting abnormal shadows in patients with confirmed COVID-19. However, it has limited value in differentiating COVID-19 patients from non-COVID-19 patients. Through the typical epidemiological history, laboratory examinations, and clinical symptoms, combined with the distributive characteristics of shadows, CCR may be useful to identify patients with possible COVID-19. This will allow for the rapid identification and quarantine of patients.

scholarly journals Study of Internal Morphology of Root-Canal Treated Single-Rooted Mandibular Second Molars in a Greek Population

2018 ◽  
Vol 22 (3) ◽  
pp. 146-149
Author(s):  
Maria-Elpida Kalaitzoglou ◽  
Charalampos Beltes ◽  
Eleni Kantilieraki ◽  
Panagiotis Beltes
Keyword(s):  
Root Canal ◽  
Greek Population ◽  
Radiographic Examination ◽  
Type I ◽  
Root Canals ◽  
Single Root ◽  
Type Iv ◽  
Dental Clinics ◽  
Internal Morphology ◽  
Clinical Records

SummaryBackground/Aim: To determine the prevalence of single-rooted mandibular second molars in a Greek population and examine their internal morphology with the aid of intraoral periapical radiography.Material and Methods: Clinical records of 531 root-canal treated permanent single-rooted mandibular second molars were collected from the Postgraduate Clinic of the Department of Endodontology, Dental School, Aristotle University of Thessaloniki, Greece and from private dental clinics in the same city. The clinical records, along with the radiographic examination, were evaluated to determine the overall frequency of single-rooted mandibular second molars together with the number of root canals and their course. The root canals were categorized using Vertucci’s classification with the addition of 3 further types where appropriate.Results: Out of 531 mandibular second molars; 102 (19.2%) presented a single root; 427 (80.4%) presented two roots; 2 (0.4%) presented three roots. In a total of 102 single-rooted mandibular second molars 31 (30.3%) presented with Type I, 18 (17.6%) with Type II, 14 (13.7%) with Type IV, 7 (7%) with 3 additional root canal types and 32 (31.4%) with a C-shaped root canal system.Conclusions: One out five mandibular second molars was single-rooted in a Greek population. The internal morphology of these teeth can be very complex with regard to the numbers and courses of root canals.

Is a routine chest X-ray indicated before discharge following paediatric cardiac surgery?

2009 ◽  
Vol 19 (4) ◽  
pp. 370-371 ◽  
Author(s):  
Kerstin Bosse ◽  
Thomas Krasemann
Keyword(s):  
Cardiac Surgery ◽  
Heart Surgery ◽  
Clinical Impact ◽  
Chest Radiographs ◽  
X Ray ◽  
Paediatric Cardiac Surgery ◽  
Routine Basis ◽  
Chest X Ray ◽  
Routine Chest

AbstractIn many paediatric cardiosurgical units, a chest X-ray is routinely performed before discharge. We sought to evaluate the clinical impact of such routine radiographs in the management of children after cardiac surgery.Of 100 consecutive children, a chest X-ray was performed in 71 prior to discharge. Of these, 38 were clinically indicated, while 33 were performed as a routine. Therapeutic changes were instituted on the basis of the X-ray in 4 patients, in all of whom the imaging had been clinically indicated. No therapeutic changes followed those radiographs performed on a routine basis.Conclusion: Routine chest radiographs can be omitted prior to discharging patients after paediatric heart surgery.

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