abstractneuroimaging allows noninvasive evaluation of the anatomy, physiology, and function of the brain. it is widely used for diagnosis, treatment planning, and treatment evaluation of neurological disorders as well as understanding functions of the brain in health and disease. neuroimaging modalities include x-ray computed tomography (ct), magnetic resonance imaging (mri), single photon emis...

background extraperitoneal laparoscopy has become a common technique for many surgical procedures, especially for inguinal hernia surgery. investigations of physiological changes occurring during extraperitoneal carbon dioxide (co2) insufflation mostly focused on blood gas changes. to date, the impact of extraperitoneal co2 insufflation on respiratory mechanics remains unknown, whereas changes ...

diagnosis of cardiac tamponade has been mainly based on clinical features and echocardiography. however, ct may be an initial tool for the evaluation of cardiac tamponade because cutting edge ct is increasingly being installed in the emergency room, and presentation of cardiac tamponade can be nonspecific. importantly, ct has better spatial resolution compared with echocardiography. thus, ident...

t akotsubo cardiomyopathy (tcm), also known as stress-induced cardiomyopathy, is a clinical syndrome of transient left ventricular (lv) apical wall motion abnormality with relative preservation of the basal heart segments in the absence of any significant atherosclerosis. recurrence of this condition is rare. we report a postmenopausal woman, who experienced two episodes of tcm within 4 months ...

teratomas are rare germline tumors that originate from one or more embryonic germ cell layers. teratoma of the kidney is extremely rare, and less than 30 cases of primary intrarenal teratomas have been published to date. we report the main radiologic features of an unusual case of mature cystic teratoma arising from the left kidney in a two-year-old boy. a left-sided abdominal mass was detected...

conclusion considering the similar diagnostic efficacy of all voxel sizes, 300 µm voxel size can be used with adequate efficacy for detection of external root resorption defects with minimal patient radiation dose and the shortest scanning time. background selecting a voxel size that yields minimal radiation dose with no significant compromise of the diagnostic accuracy of cone beam computed to...

background coronary artery anomalies are not common, but could be very serious. objectives this study determines the frequency of coronary anomalies and normal variants by multi-detector-row computed tomography (mdct). patients and methods the results of cardiac mdct study in 2697 consecutive patients were analyzed retrospectively. acquisition was performed by a 64-detector row ct machine. imag...

objective: the diagnosis of vertical root fracture (vrf) in endodontically treated teeth is a clinical challenge due to lack of specific clinical and radiographic signs. although radiographic evaluation such as cbct is helpful, intracanal posts can produce artifacts and may impair the quality of cbct scans. this study aimed to compare the diagnostic accuracy of different resolutions of cbct in ...

background : medical x-rays are the largest man-made source of public exposure to ionizing radiation. while the benefits of computed tomography (ct) are well known in accurate diagnosis, those benefits are not risk-free. ct is a device with higher patient dose in comparison with other conventional radiation procedures. objective: this study is aimed at evaluating radiation dose to patients from...

in this report, we have presented 18fdg-pet findings of organized hematoma of the maxillary sinus (ohms) that showed an increased fdg uptake in the peripheral rim of the mass with central photopenia. to our knowledge, this is the first case report in the literature reporting fdg-pet/ct findings of ohms. careful interpretation of metabolic (fdg-pet/ct) and anatomic (ct and mri) images should be ...