Background: Butterworth, Gaussian, Hamming, Hanning, and Parzen are commonly used SPECT filters during filtered back-projection (FBP) reconstruction, which greatly affect the quality and size accuracy of image. Materials and Methods: This study involved a cardiac phantom in which 1.10 cm thick cold defect was inserted into its myocardium wall and filled with 4.0 μCi/ml (0.148 MBq/ml) 99mTc conc...

application of additives is one of the proper solutions in quality enhancement in bakery products such as gluten matrix promotion, softness and unity of the texture and delay in staling which are effectives on shelf life and marketability of the bread. so the aim of this study was to investigate the synergistic effect of datem, ssl and e471 as an emulsifier in level of 0.2% and 0.5% humectants ...

An entropy-based image segmentation method using template matching and boundary detection is described. A template is postulated to approximate the true scene that gives rise to the gray-scale image to be segmented. The degree of approximation is measured by an index called Gray-scale Image Entropy (GIE); which is defined to measure the amount of information contained in a gray-scale image. It ...

Background: Since 1984 MRI gel dosimetry has been introduced as a potential technique for 3D dosimetry. Most of the studies have measured R1 (1/T1) or R2 (1/T2) properties of the gel depending on the gel type. We have studied image intensity change in the Fricke gel by different MRI protocols. Materials and Methods: Gel Dosimeters contain 0.4 mM ferrous sulphate, 1 mM NaCl, 50 mM H2SO4 and 1% b...

The Hierarchical Conditional Random Field (HCRF) model have been successfully applied to a number of image labeling problems, including image segmentation. However, existing HCRF models of image segmentation do not allow multiple classes to be assigned to a single region, which limits their ability to incorporate contextual information across multiple scales. At higher scales in the image, this...

Citation: Danso SO, Job DE, Gonzalez DR, Dickie DA, Palmer J, Ure J, Bath PM, Sandercock PAG and Wardlaw JM (2016) Developing an Integrated Image Bank and Metadata for Large-scale Research in Cerebrovascular Disease: Our Experience from the Stroke Image Bank Project. Front. ICT 3:32. doi: 10.3389/fict.2016.00032 developing an Integrated Image Bank and Metadata for Large-scale Research in Cerebr...

In this article, we develop a general method for constructing wavelets {| detAj |ψ(Ajx − xj,k) : j ∈ J, k ∈ K} on irregular lattices of the form X = {xj,k ∈ R : j ∈ J, k ∈ K}, and with an arbitrary countable family of invertible d × d matrices {Aj ∈ GLd(R) : j ∈ J} that do not necessarily have a group structure. This wavelet construction is a particular case of general atomic frame decompositio...