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This paper introduces a new local polynomial regression (LPR)-based high-resolution image reconstruction method for human brain magnetic resonance images. In LPR, the image pixels are modeled locally by a polynomial using least-squares (LS) criterion with a kernel having a certain bandwidth matrix. Steering kernels with local orientation are used in LPR to adapt better to local characteristics of...
Degenerative chronic spinal cord compression induced cervical myelopathy is a common cause of spinal cord dysfunction. The disease generally leads to impairment of the sensory and motor function of the cord progressively and insidiously. However, the underlying pathophysiology and the precise mechanism of the disease are still uncertain and remain to be investigated. The establishment of an animal...
We present an adaptive enhancement method for speech signal corrupted by the 3 Tesla (3T) functional magnetic resonance imaging (fMRI) acoustic noise. The noisy speech signal is filtered into several frequency bands and noise cancellation is applied to each band independently. We use normalized least mean squares (NLMS) algorithm for updating the co-efficients of the adaptive filters in both wideband...
The protocol for spinal DTI and tractography with high SNR and spatial resolution has been developed and tested on 6 healthy subjects and 1 CSM patient in a 3T system. Fiber bundles were traced and were found running parallel to the cervical spinal cord correlating with the neuronal anatomy in normal subjects. The FA maps showed consistent low FA region connecting all spinal levels, which corresponded...
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