The multiple signal classification (MUSIC) imaging method is applied to determine the locations of a collection of small anisotropic spherical scatterers in the framework of the total internal reflection tomography. Multiple scattering between scatterers is considered and the inverse scattering problem is nonlinear, which, however, is solved by the proposed fast analytical approach where no ass...

Background Dilated cardiomyopathy (DCM) occurring due to an unknown etiology or genetic predisposition is termed as idiopathic dilated cardiomyopathy (iDCM), although iDCM may also result from viral exposure. However, the incidence of myocardial inflammation and its relation to left ventricular (LV) function in iDCM remains unknown. Cardiovascular magnetic resonance (CMR) imaging allows for the...

In the case of neutrons the refractive index is slightly less than unity for most elements and their isotopes. Consequently, thermal and cold neutrons can be reflected from smooth surfaces at grazing-incidence angles. Hence, the optical technologies developed for x-ray astronomy can be applied for neutron focusing. The focusing capabilities of grazing incidence neutron imaging optics have been ...

lipomatosis of the nerve, also known as fibrolipomatous hamartoma, is characterized by the infiltration of the nerve by fibro-fatty tissue. the affected nerve becomes thicker, and it simulates a mass lesion. lipomatosis usually affects the median nerve and lipomatosis of the sciatic nerve is extremely rare. magnetic resonance imaging (mri) is the key to diagnosis, and it is usually pathognomoni...

conclusion these data indicate that while ce-mri will depict more positive results, there are cases in which dwi will show a positive result while ce-mri is negative. we suggest that the combination of these two imaging modalities might yield more positive results in diagnosing acute ms attack giving rise to a more accurate diagnosis. results ce-mri yielded positive results for 61 (87%) patient...

background hepatic fibrosis is a typical complication of chronic liver diseases resulting in cirrhosis that remains a major public health problem worldwide. liver biopsy is currently the gold standard for diagnosing and staging hepatic fibrosis. percutaneous liver biopsy; however, is an invasive procedure with risks of complications. therefore, there is need for alternative non-invasive techniq...

introduction: despite widespread use of 67gallium for lymphoma evaluation, timing of imaging after injection is a matter of controversy and to the extent of our knowledge no direct comparison has been made between early and delayed gallium images. we aimed to compare 24 and 48 hours post injection planar gallium imaging for evaluation of lymphoma recurrence. methods: 255 patients suspicious of...

The stability of CsI, CsI(Tl), Gd O S(Tb), Gd O S(Eu), Y O S(Eu) and Y O (Eu) thin "lms under bombardment by 9}18 keV X-rays is described. Both external photocurrent and scintillation light yield were measured as functions of accumulated dose at radiation #uxes of 10 }10 photons s mm on Beamline 2.2 of the Daresbury Synchrotron Radiation Source (SRS). All of the samples studied showed changes o...

conclusions the prevalence of both fv and fii variants are population based. iran is an ethnically diverse country. therefore, for a comprehensive analysis of a potential association of fv and/or fii mutations with stroke among iranian population, epidemiological studies could be conducted among different ethnic groups. patients and methods the study population consisted of 153 patients of diff...

background work-related injuries are the most important cause of work absence, disability, retirement, mutilation, and even mortality. in iran a great number of work-related injuries are occurred in construction industry. however, less than 12% of total workers are active in the construction sector. objectives this study aimed to determine the incidence rate of work-related injuries, the type o...