Abstract: There is described an ultrasound tracking system for tracking a position and orientation of an anatomical feature in computer-assisted surgery. The system generally has: an ultrasound imaging system having a phased-array ultrasound probe unit for emitting ultrasound signals successively towards different portions of said anatomical feature, measuring echo signals returning from said portions of said anatomical feature and generating respective imaged echo datasets; a coordinate tracking system tracking coordinates of said ultrasound phased array probe unit during said measuring, and generating corresponding coordinate datasets; and a controller being communicatively coupled to said ultrasound imaging system and said coordinate tracking system, said controller performing the steps of: registering said imaged echo datasets in a common coordinate system based on said coordinate datasets; and tracking said position and orientation of said anatomical feature based on said registering.

Abstract: A method for estimating molecule concentrations in a sample, the method including: obtaining a signal generated by a sample analyzing apparatus, the signal including at least one spectrum, the spectrum including peaks representative of the molecule concentrations in the sample and being expressed as a function of at least one variable; obtaining an analytical modeling of the signal with a modeling function, wherein the modeling function is based on the molecule concentrations and factors including gain factors of the equipment and description factors of the peaks; selecting uncertain factors in the factors; determining a priori probability distributions for the uncertain factors and the molecule concentrations; establishing, with the modeling function and the signal, posteriori probability distributions for the molecule concentrations and the uncertain factors; and estimating, with a processing module, the molecule concentrations and the uncertain factors from a parameter inferred from the posteriori probabil

Abstract: This method for estimating molecule concentrations in a measurement line that can include a liquid phase chromatographic column or a mass spectrometry is based on statistical calculations to transform, in an analytical model of the received signal, the factors (measured results or measurement parameters) into probability distributions from a priori estimations. The final values of the results are inferred from a parameter, such as the average, of these probability distributions. The method is excellent in properly assessing measurement peaks in signals with noise or superimposed with other peaks, which is not carried out properly by conventionally peak analysis or spectral analysis methods.