Fourteen cases undergoing MRI all showed low signals in T1W1 and inhomogeneous high signals in T2W1.All patients underwent surgical operations,completely removed in 14 cases,partly in 4 cases, and biopsy was performed only in 2 cases.
Conclusion The familiar craniocerebral MRI features of HLD include encephalatrophy and abnormal signals in basal segment region,especially the symmetrical long T1 signal,long T2 signal and hyperintensity on FLAIR in bilateral lentiform nucleus.
MRI showed brain atrophy in 11 cases,delayed myelinization in 8 cases,periventricular leukomalacia in 6 cases,abnomal signals of the basal ganglia in 5 cases,brain malaria in 5 cases,cortical infarction in 3 cases and congenital deformation in 4 cases,no abnormal finding in 3 cases.
VEGF plays neuroprotective and neurotrophic roles by the modulation of the phosphatidylinositol3-kinase (PI3K)/Akt/nuclear factor-κB and MAPK/ERK signaling pathways. VEGF reduces ischemic neuronal apoptosis, promotes neural stem cells proliferation, migration and differentiation and improves nerve functions.
Previous studies show that adopting fractional lower order a stable distribution model to describe noise contaminated EP signals and underlying EEG noises has a more appropriate adaptation property than the traditional Gaussian distribution model.
Based on the α-stable distribution theory and the properties of EP signals and noises, this paper analyzes the degeneration of the DLMS algorithm and the robustness of the DLMP algorithm proposed by part of the authors for latency change estimation.
In the early 1960s research into radar signal synthesis produced important formulas describing the action of the two-dimensional Fourier transform on auto- and crossambiguity surfaces.
It is shown that the one-dimensional sampling sets correspond to Bessel sequences of complex exponentials that are not Riesz bases for $L^2[-R,R].$ A signal processing application in which such sampling sets arise naturally is described in detail.
Given a bandlimited signal, we consider the sampling of the signal and some of its derivatives in a periodic manner.
We present a method for finding the dual frame and, thereby, a method for reconstructing the signal from its samples.
We show that if no sampling of the signal itself is involved, the sampling is not stable and cannot be stabilized by oversampling.
Frame Analysis of Irregular Periodic Sampling of Signals and Their Derivatives
The additional control of HVDC with unmodeled dynamics only uses the local signals and its design is simple, furthermore it can obviously improve the stability of power system in different operational conditions.
Control signals and actions are bounded by geometric constraints.
Comparison of Species-Specific Bird Signals and Human Speech
Criteria were formulated for the comparison of bird's signals and human speech.