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211 results about "Patient group" patented technology

Patient Groups, or patient-advocacy groups, are organizations which claim to represent the interests of patients suffering various physical and mental illnesses. Many are funded, and in some case staffed, by the pharmaceutical companies which sell treatments for the relevant illnesses. "The American Diabetes Association,...

Brain default network directed connection analysis method based on motif structures

The invention relates to a brain default network directed connection analysis method based on motif structures. The method includes: performing format conversion, preprocessing and low-frequency filtering on a brain fMRI image, and matching the image with a standard partition template; performing ALFF calculation on the fMRI image, extracting a time sequence of a related brain region for a Granger causal analysis, and establishing a default network; searching existed motif structures in the network, and determining the kind and quantity of the motifs; determining the importance degrees of the motifs in the default network directed connection according to indexes such as a p value and a Z score; calculating the node degrees in the motifs and the average distance of the motifs, and analyzing the effect and the information transfer rate of the brain region in the motifs and the default network; and conducting statistical analyses on a patient group and a normal person group, and finding obvious differences of the default network directed connection through the distribution condition of the motifs. According to the method, the functional differences of the default networks between patients with brain diseases and normal person can be distinguished, and a certain reference value is provided for diagnosis and treatment of the brain diseases.
Owner:CHANGZHOU UNIV

Method for recognizing spatial difference by utilizing complex number fMRI (functional magnetic resonance imaging) space source phase

The invention relates to a method for recognizing a spatial difference by utilizing a complex number fMRI (functional magnetic resonance imaging) space source phase, belonging to the technical field of biomedical signal processing. The method comprises the following steps of carrying out spatial ICA (independent component analysis) separation on complex number fMRI data, choosing an interesting ingredient, then performing phase correction and noise elimination to obtain the spatial source phase of the interesting ingredient, and finally, calculating through a variance homogeneity analysis anda variance difference coefficient so as to recognize the differences of SZs and HCs in the spatial source phase. Compared with widely applied amplitude data, the method utilizes the spatial source phase to recognize the spatial difference between a schizophrenia patient group and a healthy control group, and can display higher flexibility and reliability. For example, specific to complex number fMRI data of 82 testees in a quiescent condition, the spatial source phase is used for extracting differential voxel, which is increased by more than 122.95% in DMN, on the premise of not using FDR correction, and the differential voxel, which is extracted from the spatial source phase and can pass the FDR correction, is 69% more than the amplitude.
Owner:DALIAN UNIV OF TECH
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