Introduction: Geometric distortion is a major shortcoming of magnetic resonance imaging (MRI), which has an important influence on the accuracy of volumetric measurements, an important parameter in neurology and oncology. Our goal is to design and construct a new three- dimensional phantom using a 3D printer in order to measure geometric distortion and its reproducibility in...

the protein profiles of different iranian clinical isolats of dermatophytes (microsporum and trichophyton) were compared bv sds polyacrilamide ge! electrophoresis. although some of the protein patterns were common in both genuses, there were some genus specific protein profiles. abo within the species variety of distinct protein were profiles obtained. protein patterns can therefore distinguish...

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the purpose of this ex-post facto research is study about relationship between executive function and cognitive distortion on delinquent juveniles and non-delinquent juveniles in tehran. statistical sample are 62 delinquent juveniles selected by purposeful selection from “the center of modification and training” and 82 people of non-delinquent juveniles selected by method of random sampling fro...

Introduction Echo-planar imaging (EPI) is a group of fast data acquisition methods commonly used in fMRI studies. It acquires multiple image lines in k-space after a single excitation, which leads to a very short scan time. A well-known problem with EPI is that it is more sensitive to distortions due to the used encoding scheme. Source of distortion is inhomogeneity in the static B0 field that ...

Introduction: Geometric distortion, an important parameter in neurology and oncology. The current study aimed to design and construct a new three-dimensional (3D) phantom using a 3D printer in order to measure geometric distortion and its 3D reproducibility. Material and Methods: In this study, a new phantom ...