introduction: pulmonary embolism (pe) is a common lethal disease that its clinical symptoms may be seen in many other diseases. computed tomography pulmonary angiography (ctpa) is a valuable diagnostic modality for detection of pe. in addition, it can accurately detect the other diseases with clinical symptoms similar to pe. the aim of this study is to evaluate the frequency of pe and nonemboli...

magnetic resonance imaging (mri) uses a constant magnetic field and radio waves, a non-invasive method for examining tissues, organs and the skeletal system. the advantages and disadvantages of mri is not fully understood. in the computerized tumor (ct) scan, as an invasive method, the x-rays of the body is used for tomography; which different x-ray attenuation coefficient in tissues as well as...

multifocal avascular osteonecrosis is an uncommon entity having a predominant association with steroids and less commonly with alcohol abuse. in literature only few cases of alcohol induced multifocal avascular osteonecrosis involving both hips and shoulder are reported. to the best of our understanding this is the first case report or contribution from nuclear medicine court and it would help ...

thirty one patients with biologic and clinical diagnosis of hyperparathyroidism were submitted to thalium-technetium scan prior to exploration of the neck. scan findings were compared with the pathologic results. surgical exploration of the neck showed a parathyroid adenoma in 24 patients, parathyroid carcinoma in one patient, normal parathyroid in another patient and parathyroid hyperplasia in...

despite the long history of the worldwide use of bacillus calmette-guerin (bcg) vaccine, a wide spectrum of adverse reactions has been observed in a small proportion of immunized infants; the most severe complication, disseminated bcgitis, is often fatal but exceedingly rare and is considered to result from host immunodeficiency. at present, ct scan, ultrasound, x-ray and bone marrow aspiration...

conclusions performing the routine chest ct in high-energy blunt trauma patients (with a mean injury severity of 9), although leading to the diagnosis of some occult injuries, has no impact on the outcome and does not decrease the in-hospital stay and icu admission time. it seems that performing the routine chest ct in these patients may lead to overtreatment of nonsignificant injuries. the dec...

tc-99m pertechnetate scintigraphy is the modality of choice for diagnosis of meckel's diverticulum. interpretation of meckel's scan identifies a focal area of radiopharmaceutical uptake in the anterior abdomen similar to normal gastric mucosa. the activity must be of the same pattern and intensity as gastric uptake. we present a 13-year-old patient with gastrointestinal bleeding and a...