The first section of this paper describes a method for correcting inter-slice intensity variations in MR images. The method does not rely on a tissue model or segmentation, and is not affected by the presence of abnormalities. The second section of this work extends this technique to the correction of inter-volume intensity variations in MR images of the brain, using a characterization of bi-la...

The lateral amygdaloid (LA) nucleus is the main input station of the amygdala for sensory afferents. However, it is unclear how the lateral nucleus transforms these inputs, because its intrinsic connectivity is poorly understood. Here, we took advantage of the fact that glutamatergic neurons of the lateral nucleus send a primarily unidirectional projection to the basomedial nucleus. Consequentl...

introduction: plastination is a unique technique for preservation of biological specimens used for teaching purposes. the protocol of flexible sheet plastination includes fixation, slicing, dehydration, force impregnation, casting, and curing (hajian, rabiei, fatollahpour & esfandiary, 2008). the procedure is done by using p87 flexible unsaturated polyester resin and provides heavy, gross, frag...

AIMS To develop a method of processing non-formalin fixed prostate specimens removed at radical prostatectomy to obtain fresh tissue for research and for correlating diagnostic and molecular results with preoperative imaging. METHODS/RESULTS The method involves a prostate slicing apparatus comprising a tissue slicer with a series of juxtaposed planar stainless steel blades linked to a support...

Energy homeostasis is controlled to a large extent by various signals that are integrated in the hypothalamus. It is generally considered that neurons in each of the hypothalamic nuclei are regulated by afferent projections that terminate within the cell body region of the nucleus. However, here it is shown that hypothalamic proopiomelanocortin (POMC) neurons receive synaptic inputs onto distal...

organotypic spinal cord slices from neonatal mammals could be a powerful model for evaluation of cell survival but also cell death mechanisms. the aim of this study was to establish an in vitro model for investigating cell survival and mechanism involved in cell death in neonatal spinal cord slices. the spinal cord was sliced and incubated into culture medium. the mtt assay was carried out to a...

Objective: Potato is the fourth important food crop after wheat, rice and maize. Shrinkage  of  food  materials  has  a negative  consequence  on  the  quality  of  the dehydrated product. The main objective pursued in this paper is to investigate the shrinkage amount of potato slices during drying process using vacuum-infrared method. Methods: In this work, the effect of the infrared radiation...

We consider the problem of system reconstruction from higher-order spectra (HOS) slices. We establish that the impulse response of a complex system can be reconstructed up to a scalar and a circular shift based on any pair of HOS slices, as long as the distance between the two slices satisses a certain condition. One slice is suucient for the reconstruction in the case of a real system. We prop...

We consider the problem of system reconstruction from higher order spectra (HOS) slices. We establish that the impulse response of a complex system can be reconstructed up to a scalar and a shift based on any pair of HOS slices, as long as the distance between the two slices satisfies a certain condition. One slice is sufficient for the reconstruction in the case of a real system. We propose a ...