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Ray casting algorithm is widely used in three-dimensional visualization of medical image, which can produce superior quality image besides simple theory. However, its rendering velocity is very slow because of huge amounts of rays and repeated resample of the data. An improved fast algorithm of ray casting volume rendering is presented which can figure out(More)
PURPOSE : Tumor grading plays an essential role in the optimal selection of solid tumor treatment. Noninvasive methods are needed for clinical grading of tumors. This study aimed to extract parameters of resting state blood oxygenation level-dependent functional magnetic resonance imaging (RS-fMRI) in the region of glioma and use the extracted features for(More)
PURPOSE Brain tumor patients are usually accompanied by impairments in cognitive functions, and these dysfunctions arise from the altered diffusion tensor of water molecules and disrupted neuronal conduction in white matter. Diffusion tensor imaging (DTI) is a powerful noninvasive imaging technique that can reflect diffusion anisotropy of water and brain(More)
Functionality near infrared spectroscopy (fNIRs) technology was utilized in the present paper to explore functional properties of brain tissue of rat model of Parkinson's disease(PD). Imaging data of rat model were detected by small animal MRI and CT; and characteristic parameters of striatum of rat brain were detected by fNIRs system. Experimental results(More)
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