objectives to evaluate morphologic variations at the aortic isthmus with particular attention to ductus diverticulum, a mimicker of traumatic pseudoaneurysm, and to describe differences using computed tomography (ct) images. patients and methods from december 2013 to december 2014, patients who underwent a chest ct examination after blunt trauma at our emergency department were included. aortic...

the possibility of abnormal avf was considered and it was confirmed on contrast-enhanced computed tomography (ct), inferring that this modality is not only fast and non-invasive, but also accurate in detecting vascular abnormalities. herein, we report a 42-year-old woman with congenital avf between the external carotid artery and external jugular vein, presenting with palpitation and dyspnea. t...

the reversed halo sign (rhs) may sometimes be seen in patients with cryptogenic organizing pneumonia (cop), but is rarely associated with other diseases. herein, we present a case of a 21-year-old woman with chronic eosinophilic pneumonia, with high resolution computed tomography (hrct) finding of rhs. this is an unusual and rare presentation of chronic eosinophilic pneumonia.

objectives: bone quality and quantity assessment is one of the most important steps in implant treatment planning. different methods such as computed tomography (ct) and recently suggested cone beam computed tomography (cbct) with lower radiation dose and less time and cost are used for bone density assessment. this in vitro study aimed to compare the tissue density values in hounsfield units (...

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background malignant pleural mesothelioma (mpm) is an uncommon neoplasm. mpm occurs more frequently in patients born or living in certain villages of turkey. objectives we aimed to review radiological findings of mpm. patients and methods we reviewed the ct findings in 219 biopsy-proven mpm patients admitted to our clinic between 1993 and 2008. results the most common ct findings included pleur...

pulmonary adenocarcinoma is one of the major types of lung cancers in which metastasis is not uncommon. hereby, we report a case of pulmonary adenocarcinoma with multiple muscular, cutaneous, pancreatic and peritoneal metastases. actually, all these features occurring in one patient makes it an extraordinary case. a rare anatomic variation, double inferior vena cava (ivcs), was another rare man...

introduction high doses of ionizing radiation can lead to adverse health outcomes such as cancer induction in humans. although the consequences are less evident at very low radiation doses, the associated risks are of societal importance. this study aimed at assessing entrance skin doses (esds) in patients undergoing selected diagnostic x-ray examinations at public hospitals of akwa ibom state,...

introduction: chest x–ray is one of the most common method of imaging. cardio thoracic ratio ( ctr ) is one of the parameters of chest x–ray that is used for determining cardiac enlargement. echocardiography as compared to chest x–ray is expensive and all centers dont have it, but it can determine heart size, valvular diseases, ejection fraction, left ventricular hypertrophy (lvh), pericardial ...

naturally occurring radionuclides have different amount of activity concentration for 226 ra, 232 th and 40 k in building materials. in this study, natural radioactivity has been measured for bricks used in tehran. for this work, 9 samples of three types of bricks, clay brick (cb), making the facade brick (mfb) and firebrick (fb) has been selected from different regions and factories in tehran....