Segmentation and classification of lungs CT-scan for detecting COVID-19 abnormalities by deep learning technique: U-Net model.

Background: Artificial intelligence (AI) techniques have been ascertained useful in the analysis and description of infectious areas in radiological images promptly. Our aim in this study was to design a web-based application for detecting and labeling infected tissues on CT (computed tomography) lung images of patients based on the deep learning (DL) method as a type of AI.

Materials And Methods: The U-Net architecture, one of the DL networks, is used as a hybrid model with pre-trained densely connected convolutional network 121 (DenseNet121) architecture for the segmentation process.

Bone mineral density status in patients with recent-onset rheumatoid arthritis.

Background: Osteoporosis is a sizable comorbidity complication in Rheumatoid Arthritis (RA) sufferers. In the current study, the prevalence of osteopenia and osteoporosis in active RA sufferers and the association of disease-related factors of osteoporosis and reduced bone mineral density (BMD) have been examined.

Methods: In this cross-sectional study, 300 new-onset symptoms (less than one year) RA patients without a history of glucocorticoids or DMARDs were selected.

Assessment of ACE1 variants and ACE1/ACE2 expression in COVID-19 patients.

Contribution of the renin-angiotensinogen system in the risk of COVID-19 and related complications have been assessed by several groups. However, the results are not consistent. We examined levels of ACE1 and ACE2 in the circulation of two groups of COVID-19 patients (ICU-admitted and general ward-admitted patients) compared with healthy controls.

Penicillin in oral aphthosis, new insight for an old drug: A randomized, double-blind, controlled clinical trial.

Background: Oral aphthosis is a painful ulceration of mucus membranes characterized by round or oval lesions with central necrosis and erythematous haloes. Due to unknown etiology, treatment is highly controversial and based mainly on individual experience. The aim of this study was to investigate the safety and efficacy of topical penicillin 6.

Thromboangiitis obliterans with cryoglobulinemia.

Thromboangiitis obliterans (TAO), or Buerger's disease, is a vascular occlusive disease associated with cigarette smoking. It typically affects medium sized vessels of extremities. Basic pathology of TAO is described to be endothelial activation with highly inflammatory intraluminal thrombosis preserving internal elastic membrane.

Systemic aspects of soft tissue rheumatic disorders (STRDs).

Objective: To determine the markers of systemic inflammation in soft tissue rheumatic disorders (STRDs).

Study Design: Case series.

Place And Duration Of Study: Rheumatology Clinic, Yazd, Iran, from November 2010 to December 2011.

Bedtime single-dose prednisolone in clinically stable rheumatoid arthritis patients.

Introduction. Sign and symptoms of rheumatoid arthritis have circadian rhythms and are more prominent in the morning. Timing of glucocorticoid administration may be important with respect to the natural secretion of endogenous glucocorticoids.

Pattern of rheumatic diseases in two outpatient clinics in Iran: similarities with some different features.

Background: Rheumatic diseases are among the most prevalent diseases recognized in the world. Musculoskeletal disorders are one of the main causes of disability around the world and expend a large amount of health care and social resources and have a substantial impact on the quality of life of those affected. To identify preventable risk factors and to gain insights into the burden of the diseases, it is important to know the prevalence and demographics of them.

Adult-onset Still's disease: a review.

Objective: This article is an attempt to review recent literature regarding pathogenesis and clinical and laboratory findings in adult-onset Still's disease (AOSD).

Materials And Methods: A search was conducted in PubMed and Ovid for English language publications, using individual or linked search terms "adult-onset Still's disease," "adult Still's disease," "Still's disease," "AOSD," and other related terms, from 1996 to 2009, and the clinically relevant articles were subsequently selected.

Results: More than 1000 titles were reviewed by the authors, and the most important concepts were selected from 143 full-text articles.

Adult-onset Still's disease: a report of 28 cases and review of the literature.

Adult-onset Still's disease (AOSD) is a rare systemic inflammatory disorder of unknown etiology. It is characterized by fever, skin rash, polyarthralgias or polyarthritis, sore throat, hepatosplenomegaly, lymphadenopathy, leukocytosis, liver enzyme elevation, and high serum level of ferritin. Several kinds of skin lesions have been reported in this condition.