a 36-year-old woman, diagnosed with systemic lupus erythematosus (sle), showed bulbar symptoms including impaired memory, slurred speech and swallowing difficulty 7 days before admission. magnetic resonance imaging (mri) showed symmetric confluent hyperintensities in the bilateral cerebral white matter on t2 weighted imaging (t2-wi), extended into the genu of the internal capsule and the crus c...

objective(s): in positron emission tomography (pet) studies, thoracic movement under free-breathing conditions is a cause of image degradation. respiratory gating (rg) is commonly used to solve this problem. two different methods, i.e., phase-gating (pg) and amplitude-gating (ag) pet, are available for respiratory gating. it is important to know the strengths and weaknesses of both methods when...

background & aim: dental implants should be surrounded with at least 1mm bone. assessing ridge width is an important part to achieve this goal. the use of ridge mapping to assess bone levels available avoids some of the problems associated with ct-scanning. the aim of this study was to assess the accuracy of ridge-mapping compared to ct-scan in determination of bony ridge widths. methods & mate...

introduction: pulmonary involvement secondary to systemic sclerosis (ssc) is the major cause of morbidity and mortality in ssc patients. we designed this study to determine the correlation of important lung function parameters with lung high resolution ct (hrct) scan findings.materials and methods: thirty–two consecutive diffuse ssc patients with pulmonary fibrosis were enrolled in this cross-s...

conclusions most patients are referred for restaging and demonstrate evidence of regional or distant metastasis with significant value for further treatment planning. providing insurance coverage and familiarizing referring physicians about appropriate indications of this relatively new diagnostic modality will be to the best interest of head and neck cancer patients in long term. methods we re...

introduction: the selection of   optimal treatment of obstructive nephrouropathy requires information about the functional status of each kidney. nuclear renal scanning objectively measure differential renal function, multiple studies have demonstrated the role of assessment of renal perfusion and gfr with triphasic ct. the aim of this study is to assess the role of ct based on renal parenchyma...

introduction: optimized production and quality control of 68ga-dotatate as an efficient and preferable pet radiotracer for somatostatin receptor imaging in neuroendocrine tumors is of great interest. in this study effort has been made to present a fast, efficient, cost-effective and facile protocol for 68ga-dotatate productions for clinical trials. methods:68ga-dotatatewas prepared using genera...

metastasis of gastroesphageal junction (gej) adenocarcinoma in skeletal muscle is rare and primary sites for skeletal muscle metastases are usually lung, renal and colorectal cancer. we have encountered with the first case report of solitary psoas muscle metastasis of gej adenocarcinoma. here we describe a 65 years old man was diagnosed with gej adenocarcinoma in tertiary hospital, tehran, iran...

eosinophilic granuloma is benign end of the spectrum of the langerhans cell histiocytosis (lch) which is characterized by solitary or multiple lesions in bones, skin, lung, lymph node etc. here, we present a case of a 13-year old boy with pain and swelling in the right parietal region of skull with no other complaint. a computerized tomography (ct) scan and subsequent fine needle aspiration cyt...

background: pre-clinical investigation of stem cells for repairing damaged myocardium predominantly used rodents, however large animals have cardiac circulation closely resembling the human heart. the aim of this study was to evaluate whether spect/ct myocardial perfusion imaging (mpi) could be used for assessing sheep myocardium following an acute myocardial infarction (mi) and response to int...