4 results about "Spiral ct" patented technology

This invention belongs to the field of digital core spiral CT scanning analysis technology, and relates to a method, device, and storage medium for characterizing coal seam intercalation. The method includes the following steps: acquiring a CT grayscale image of the coal seam; classifying the inorganic minerals in the CT grayscale image; establishing an inorganic mineral classification and identification chart for the coal seam; acquiring the inorganic mineral content of each CT scan cross-section corresponding to the coal seam; calculating the brittleness parameter of each CT scan cross-section; and generating characterization results based on the CT grayscale image, the inorganic mineral content, and the brittleness parameter. The coal seam intercalation characterization method, device, and storage medium provided in this application utilize a coal reservoir mineral content and brittleness parameter evaluation method based on full-diameter CT, achieving for the first time a quantitative evaluation of the inorganic mineral content and brittleness parameter of the entire well section of a coal reservoir at the millimeter level, providing valuable data support for the next step of coalbed methane development engineering fracturing.

The present application relates to a kind of high-energy industrial spiral CT systems, belong to CT scanning technical field, solve the scanning difficult problem of oversized workpiece.The CT system of the present application includes: workpiece conveying mechanism and scanning system;Workpiece conveying mechanism includes: support platform, first linear conveying component, second linear conveying component and driving device;Support platform is slidably installed above first linear conveying component and can be driven displacement by driving device;First linear conveying component and second linear conveying component are respectively arranged at the front and rear of scanning system;Scanning system includes: scanning assembly, rotating slip ring component and support assembly;Scanning assembly is rotatably installed on the support assembly by rotating slip ring component, and scanning assembly can scan the workpiece to be measured when rotating.The present application realizes the scanning of large-size workpiece and does not need workpiece rotation.

The invention discloses a thighbone tackle forming method based on 3D printing, and relates to the technical field of three-dimensional reconstruction. Comprising the steps of data collection, data preprocessing, three-dimensional model construction, parameter measurement, individualized reconstruction, osteotomy guide plate design and intraoperative forming, knee joint skeleton anatomy details are accurately obtained through spiral CT data collection, multi-step image processing and three-dimensional modeling, and the individualized reconstruction of the tackle groove based on patient individual anatomy is achieved. The curvature radius, the width, the depth and the articular surface angle of the reconstructed tackle groove are matched with the height of the patella, the operation accuracy is improved, and the problem that the patella is unstable due to maldevelopment of the tackle groove is solved; the design of the osteotomy guide plate realizes accurate conversion from virtual osteotomy to an actual operation, the binding surface of the osteotomy guide plate is tightly attached to the outer surface of the femur, the osteotomy channel is accurately matched with an osteotomy tool, the operation time is shortened, the design of the fixing holes ensures that the guide plate is stable, the osteotomy deviation risk is reduced, and the operation safety is improved.

The application provides a multi-modal CT image data fusion three-dimensional reconstruction method for puncture positioning, constructs a high-dimensional feature space containing anatomical structure, metabolic activity and time-varying information through characteristic coding of spiral CT and multi-phase PET data; realizes modality alignment by using a mutual information driven double constraint registration mechanism, and completes cognitive level fusion of cross-modal features by combining a dynamic weight tensor of patient physiological characteristics, clinical requirements and organ semantics; and finally generates a three-dimensional reconstruction model with medical accuracy and clinical guidance by adaptive light field rendering and topology preservation optimization, so as to provide precise visualization support for puncture surgery.