Learn More
Non-rigid registration requires a smoothness or regularization term for making the warp field regular. Standard models in use here include b-splines and thin plate splines. In this paper, we suggest a regularizer which is based on first principles, is symmetric with respect to source and destination, and fulfills a natural semi-group property for warps. We(More)
OBJECTIVE The initiation of treatment for women with threatening preterm labor requires effective distinction between true and false labor. The electrohysterogram (EHG) has shown great promise in estimating and classifying uterine activity. However, key issues remain unresolved and no clinically usable method has yet been presented using EHG. Recent studies(More)
PURPOSE In order to assess whether focal epileptic seizures can be detected and distinguished from exercise we evaluated four different heart rate variability (HRV) methods with short term moving window analysis of 30, 50 or 100 R-R intervals or seconds per analyzed window. METHODS The four methods consisted of: (1) reciprocal high frequency power based(More)
PURPOSE Near infrared spectroscopy (NIRS) has proved useful in measuring significant hemodynamic changes in the brain during epileptic seizures. The advance of NIRS-technology into wireless and portable devices raises the possibility of using the NIRS-technology for portable seizure detection. METHODS This study used NIRS to measure changes in oxygenated(More)
Tachycardia is often seen during epileptic seizures, but it also occurs during physical exercise. In order to assess whether focal epileptic seizures can be detected by short term moving window Heart Rate Variability (HRV) analysis, we modified the geometric HRV method, Lorenz plot, to consist of only 30, 50 or 100 R-R intervals per analyzed window. From(More)
Scale space theory is a framework which permits one to analyze an image at diierent resolutions. The crucial feature is to let the resolution of an image vary continuously rather than discrete. This opens up the toolbox of mathematical analysis for image analysis. When extrema and saddle points of an image are tracked with increasing scale we know that they(More)
OBJECTIVE The aim was to investigate the possible interactions of the two peripheral hormones, leptin and ghrelin, that regulate the energy balance in opposite directions. METHODS Leptin-receptor mutated Zucker diabetic fatty (ZDF) and lean control rats were treated with the ghrelin-receptor ligand, tabimorelin (50 mg/kg p.o.) for 18 days, and the effects(More)