Tumor/Cancer
Tumors are illnesses that occur when changes in a group of ordinary cells within the body cause uncontrolled, a typical growth, resulting in a lump called a tumor.
MRI Partitioning
MRI Partitioning MRI Knowledge Hub MRI Soft Visualization The prototypes found by the connectionist scheme define partitions of pixels in the image. In order to enable construction of soft partitions so that alternative possibilities and inherent variabilities in the pixel values can be taken care of, a fuzzy membership function is defined for the partitions.
MRI Connectionist
MRI Connectionist MRI Knowledge Hub Connectionist approach for Clustering pixel in MRI Clustering, in the context of present problem, is the process of grouping pixels on the basis of perceived similarities. These clusters can provide natural partitions of the pixels corresponding to different regions in the image. Traditional clustering algorithms require a priori knowledge about
MRI DTI
Diffusion Tensor Imaging (DTI) MRI Knowledge Hub What is DTI Define DTI Alzheimer’s and MRI Define Alzheimer’s
fMRI Data Processing
MRI Knowledge Hub fMRI Data Processing Basics of fMRI data analysis Data in two fMRI time courses are collected, which have been obtained from each voxel in an experiment with two conditions, a control condition (“Rest”) and a main condition (“Stim”). Each condition has been measured several times. Note that in a real experiment, one
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fMRI Pulse Sequence
fMRI Pulse sequence MRI Knowledge Hub Static Field B0 on fMRI The magnitude of the static field (B0) used is critical to the percentage signal change obtained on activation. This is because susceptibility differences have a greater signal dephasing effect at higher fields. With the increase in field strength (B0) the magnitude of the BOLD
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fMRI Paradigm
MRI Knowledge Hub fMRI Paradigm fMRI experiments in research need a special paradigm to give stimulus to detect brain function of interest. This is typically accomplished by presenting a subject with a task to give stimulus to the brain. The tasks are used in neuropsychology, fMRI tasks are accurately organized in time. This is necessary
Ktrans
MRI Knowledge Hub Pharmacokinetic Parameters in MRI Pharmacokinetics in general deals with the kinetics of drug absorption, distribution and elimination. After drug administered orally or through injection in the body is absorbed from the site of administration to the systemic circulation system. The drug is distributed to all parts of the subsequently drug is eliminated from
Histogram
MRI Knowledge Hub What is Histogram in MRI Histogram is a two dimensional graphical representation of Digital Image data. The histogram of a Digital Image with gray levels in the X-axis is in range [0, L-1] and Y-axis is the number of pixels n in the image correcsponding to each gray value. The histogram is
Digital Image
MRI Knowledge Hub What is Digital Image Digital image is a continuous variation in two dimentional i.e in x coordinates and Y coordinates being converted to variation in the form of a finite numbers or values called pixels. These number or values are repesented in the form of digital numbers. It refers light intensity function,