36 results about "Densitometry" patented technology

An osseo classification and digital modality modeling system includes a computer with a digital memory adapted for storing patient densitometry information, an input and an output. An input subsystem includes a pair of source / receptor units mounted on a signal positioning subsystem, which is adapted for moving the source / receptor units through predetermined paths of movement, which can be circular or linear. The resulting tomographic data is synthesized to form any 3-D model or image, which is output for further analysis and classifying osseo structure and / or prosthetic osseointegration. An osseo classification and digital tomosynthesis method includes the steps of moving a pair of sensor / receptor units relative to a patient. The resulting signals output by the receptor are digitized and synthesized to form a 3-D image or model. Multiple depths of penetration and multiple widths can be captured from single acquisitions using digital tomosynthesis signal processing techniques. Osseo structure and / or prosthetic osseointegration is classified using the densitometry data.

The invention relates to a method of measuring the real density of the powder using double density bottles, which including the following steps: 1) weighing the quality of the density bottle A and B with the mass of ma and mb accurately, filling the bottle with agent fluid and weighing the quality m1, m2, checking the dielectric fluid density Rho0 corresponding to the temperature, compute the volume of the two bottle va, vb; 2) filling the bottle B with the powder to be measured, weighing the quality m3, and m[sample]=m3-mb; then filling the agent fluid to the surface of the powder 4.8-5.2mm, putting it to the vacuum chamber and pumping to the critical boiling point, keeping 28-32 minutes until the air bubble in the powder space output completely; 3) filling the agent fluid to bottle A,B at the same time, measuring the quality of bottle A m4, bottle B m5; 4) computing the sample's mass density according to the following formula: rho[sample]=m[sample] / v[sample]=(m3-mb)(m4-ma) / [(m4-ma)vb-(m5-m3)va].

The invention discloses a microvessel distribution symmetry quantification method for gastric mucosa dyeing amplification imaging, which comprises an image segmentation method, a centroid eccentric distance method, a centroid eccentric angle method and a density method. The image segmentation method is used to extract the clear area and the whole picture of microvessels in the gastroscope image; the centroid eccentricity method quantifies the symmetry of the whole microvessel distribution from the angle of centroid eccentricity; the centroid eccentric angle method quantifies the symmetry of the whole microvessel distribution from the perspective of centroid eccentricity angle ; The density method quantifies the distribution symmetry of microvessels in the whole map from the perspective of density. Finally, by weighting the symmetry score of centroid eccentricity distribution, centroid eccentricity angle distribution symmetry score, and density distribution symmetry score, the final symmetry coefficient of microvessel distribution in the whole map is obtained, and then according to the symmetry coefficient of the distribution of microvessels in the whole map, the distribution The symmetry level is judged.