introduction: traumatic chest injuries (tci) are one of the most common causes of referring to the emergency departments, with high mortality and disability. this study was designed to evaluate the diagnostic accuracy of ultrasonography versus chest x ray (cxr) in detection of hemo-pneumothorax for patients suffering penetrating tci. methods: the present cross-sectional study was performed to e...

introduction quality control (qc) techniques are used in monitoring and maintenance of the components of an x-ray system. qc of radiology devices plays a significant role in reduction of medication dose and optimization of image quality. this study aimed to conduct qc tests on randomly selected radiology devices, installed in diagnostic imaging departments of iran. materials and methods in tota...

abstract background: misdiagnosis of the acute appendicitis may increase the rate of negative appendectomies, which involve a huge waste of resources and are sometimes associated with severe complications. furthermore, false negative result of ultrasonography (us) could lead to perforation of appendix. since ultrasonography is still the most common imaging technique used in iranian appendicitis...

conclusions the tmd, with a cut-off point of 65 mm, had superior diagnostic value compared with the hmdr and mallampati score. therefore, the tmd could be used in malay patients to predict the difficulty of larynx visualization during laryngoscopy. results difficulty in visualizing the larynx was found in 28 (10.1%) patients. the auc, sensitivity, and specificity for the three airway predictors...

background disability is a relatively common problem in children. the pattern of admission in these children and their common infections may differ from other children because of their special disabilities. objectives we aimed to determine common infectious diseases resulting in admission of these children to our hospital. patients and methods between september 2006 and september 2007, 60 disab...

suspended particles with aerodynamic diameters not greater than 2.5 μm (pm2.5) were sampledat the urban background, regional background and urban traffic points in southern poland. in total, 120 sampleswere collected between 2nd august 2009 and 27th december 2010. 16 polycyclic aromatic hydrocarbons (pahs)and organic carbon (oc) were determined in each sample. the samples were collected with a ...

results pain scores, analgesic requirements assessed at 24 hours and operation duration were significantly lower in the non-closure group as compared to the closure group. febrile conditions and changes in hemoglobin levels were similar in both groups. conclusions non-closure of both visceral and the parietal peritoneum when performing a cs produces a significant reduction in pain, fewer analge...

Reputation systems provide mechanisms through which multiple parties can quantify the trust between one another. These systems seek to generate an accurate assessment in the face of unprecedented community size, while providing anonymity and resilience to malicious attacks. We focus on attacks and defense mechanisms in reputation systems. We present an analysis framework that allows for general...

Herein, we review the current findings of how a variety of accessory cells could participate in shaping the tumor microenvironment and supporting the mechanisms by which cancer cells undertake the epithelial-mesenchymal transition (EMT). EMT, a complex of phenotypic changes, promotes cancer cell invasion and creates resistance to chemotherapies. Among the accessory cells present in the EMT, imm...