the aim of the present study was to clarify if old n-mri rat, a strain which is easily available in iran and cheap to maintain, is a suitable alternative to those previously reported. in this model, we compared three quantifiable parameters between old and young rats: biochemically, involving measurement of differences in the lipid profile. histologically, the differences of the thickness of th...

Abstract The purpose of this work was to develop and evaluate a deep learning approach for automatic rat brain image segmentation magnetic resonance imaging (MRI) images in clinical PET/MR, providing useful tool analyzing studies the pathology progression neurological disease validate new radiotracers therapeutic agents. Rat PET/MR ( N = 56) were collected from system using dedicated small-anim...

We herein report the magnetic resonance imaging (MRI) findings in a brain meningioma pet rat (Rattus norvegicus domestica). A 1.5-year-old was referred for depression, ataxia, tremors and bilateral nystagmus; MRI elected suspecting an intracranial neoplasia. The study performed with 0.25 T scanner. revealed well-defined oval mass heterogeneous appearance, hyperintense T1 T2, extra-axial localis...

OBJECTIVE This research aims to investigate magnetic resonance imaging (MRI) in the tibial epiphyseal growth plate development of Wistar rat. METHODS Fifty weanling Wistar rats were divided by a computerized blocking procedure into five groups. The rats received standard commercial feed with or without T-2 toxin additive, low-protein feed with or without T-2 toxin additive, and Kashin-Beck di...

The popularity of patch antennas in magnetic resonance imaging (MRI) has reduced because the large size required for antennae to resonate. Since antenna is associated with wavelength and wavelengths that are used MRI substantially large, used. Methods reducing sizes have been proposed; however, these methods reduce penetration depth uniformity. In this study, we area by 30% folding ground plane...

It has been shown by histology that cardiac myocytes are organized into laminae and this structure is important in function, both influencing the spread of electrical activation and enabling myocardial thickening in systole by laminar sliding. We have carried out high-spatial resolution three-dimensional MRI of the ventricular myolaminae of the entire volume of the isolated rat heart after cont...

Atlases of the rat brain are widely used as reference for orientation, planning of experiments, and as tools for assigning location to experimental data. Improved quality and use of magnetic resonance imaging (MRI) and other tomographical imaging techniques in rats have allowed the development of new three-dimensional (3-D) volumetric brain atlas templates. The rat hippocampal region is a commo...

PURPOSE 11.7 Tesla MRI was examined to detect Virchow-Robin spaces (VRSs) smaller than 100 μm in the rat brain. The effects of maternal exposure to lipopolysaccharide (LPS) were evaluated on basis of the number of dilated VRSs in the offspring rat brain. METHODS T2-weighted MRI with an in-plane resolution up to 78 μm (repetition time = 5000 ms, echo time = 35 ms, slice thickness = 250 μm, ima...