{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9805448","patent":{"patent_number":"US-9805448","title":"Method and apparatus for computed tomography using asymetric filter for volume half reconstruction","assignee":null,"inventors":[],"filing_date":"2015-02-26T00:00:00.000Z","publication_date":"2017-10-31T00:00:00.000Z","cpc_codes":["G06T","G06T","G06T","G06T","G06T","G06T","G06T"],"num_claims":19,"abstract":"An apparatus and method of processing cone-beam X-ray projection data using a short-scan method (e.g., filtered back projection and weighting the projection data using the Parker weights for projection angles spanning 180° plus the fan angle) to reconstruct an image. Imaging artifacts in the short-scan image are corrected by combining the short scan image with a correction image. The correction image is obtained by applying an asymmetric filter to the difference between the short-scan image and a full-scan image, the full scan image being obtained using image reconstruction of the full-scan projection data. In one implementation, the asymmetric filter is a low-pass filter that, in the spatial domain, is foreshortened along a center-view axis corresponding to the short scan."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for computed tomography using asymetric filter for volume half reconstruction","description":"An apparatus and method of processing cone-beam X-ray projection data using a short-scan method (e.g., filtered back projection and weighting the projection data using the Parker weights for projectio","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9805448","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-9805448","citation_suggestion":"Patentable. \"Method and apparatus for computed tomography using asymetric filter for volume half reconstruction\" (US-9805448). https://patentable.app/patents/US-9805448","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9805448","json":"https://patentable.app/api/llm-context/US-9805448","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T03:56:33.078Z"}