Introduction: In nuclear medicine imaging, detection of the scattered photons along with the primary photons is one of the major problems that can lead to a decrease in ddiagnostic accuracy. Therefore, use of a suitable scatter correction method can help to improve of the image quality and increase of diagnostic accuracy. The aim of this study is evaluation of five energy wind...

Background Tissues within the dipolar field of superparamagnetic contrast agents experience a frequency shift that enables positive contrast MRI with acquisition schemes using on-resonant saturation (Figure 1a,b). The administration of iron oxide based agents enables a plethora of applications using positive contrast MRI. They have been widely explored and mainly focused on lymphography, angiog...

PURPOSE To evaluate visual outcome and the changes of contrast sensitivity (CS) after diffuse lamellar keratitis (DLK). METHODS Using retrospective chart review, 48 eyes of 25 patients who underwent laser in situ keratomileusis (LASIK) with Visx S4 (VISX Inc., Santa Clara, CA) and M2 (Moria, France) and who were followed for at least six months were included. They were divided into two groups...

Introduction Various experiments have been performed to use MRI to directly detect magnetic fields produced by neuronal currents (termed ncMRI). However, feasibility of ncMRI has not been completely demonstrated due to limited sensitivity of MRI to neuronal currents. To increase the possibility of detecting ncMRI signal, it is necessary to improve the detection method to achieve higher detectio...

Software Process Simulation Modeling (SPSM) research has increased in the past two decades, especially since the first ProSim Workshop held in 1998. Our research aims to systematically assess how SPSM has evolved during the past 10 years in particular whether the purposes for SPSM, the simulation paradigms, tools, research topics, and the model scopes and outputs have changed. We performed a sy...

purpose: to determine the effect of occluding a normal eye on visual acuity, contrast sensitivity and stereopsis in amblyopic school children. methods: amblyopic children from primary schools of region 2 in mashhad were identified and referred to optometry clinics of mashhad medical university through a screening program. informed consent was obtained from the parents. all subjects underwent an...