Background and Purpose:  Due to the important role of imaging in the diagnosis and treatment plan in orthodontics, CBCT (Cone Beam Computed Tomography) images because of their three-dimensional nature, can minimize the disadvantages of two-dimensional images such as magnification, distortion, or superimposition. The purpose of this study was to evaluate the accuracy of conventional cephalograms...

Abstract Background COVID-19 was discovered in February China. Due to the high prevalence of disease, early detection and rapid isolation patients are vital points for controlling outbreak. The purpose this study determine correct location chest CT scan diagnosis COVID-19. Main text current is a systematic review meta-analysis. 2959 papers were found all national international databases. has be...

the relationship between qt dispersion and myocardial ischemia is still controversial. therefore, we aimed to investigate the relationship between qtd and the severity and extent of myocardial ischemia. in this cross-sectional study, 141 patients having symptoms of cad who referred to our medical center during 2009-2010, and were examined with myocardial isotope scan and ecg, were enrolled. bas...

reverse redistribution pattern is defined as decreased activity in the myocardium in the rest phase of the myocardial perfusion scan in comparison with the stress images. there are many studies concerning the etiology and clinical significant of this phenomenon in nuclear medicine literature. the dominant idea about etiology of reverse redistribution is early wash out of the radiotracer from th...

statement of the problem periodontitis is a common infectious disease that can be affected by different factors.periodontal conditions can be influenced by systemic diseases and they also can act as risk factors for some systemic diseases. several studies have been carried out on the relationship between cardiovascular disease and periodontal disease. purpose the purpose of our study was to eva...

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