{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9691168","patent":{"patent_number":"US-9691168","title":"Image reconstruction using gradient projection for medical imaging applications","assignee":null,"inventors":[],"filing_date":"2012-03-18T00:00:00.000Z","publication_date":"2017-06-27T00:00:00.000Z","cpc_codes":["G06T","A61B","G06T"],"num_claims":22,"abstract":"Techniques and systems are disclosed for estimating an unknown image from a plurality of cone-beam computed tomography (CBCT) image projections. The unknown image is estimated by solving for minima of an expression comprising a fidelity term that is a function of the plurality of image projections and a regularization term that is responsive to a sparsity of the CBCT image projections. The minima of the expression is iteratively estimated by calculating an image gradient of the function, determining a step size based on a based on a Barzilai-Borwein (BB) formulation and adjusting the minima estimate using the projected image gradient and a step size."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Image reconstruction using gradient projection for medical imaging applications","description":"Techniques and systems are disclosed for estimating an unknown image from a plurality of cone-beam computed tomography (CBCT) image projections. The unknown image is estimated by solving for minima of","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9691168","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-9691168","citation_suggestion":"Patentable. \"Image reconstruction using gradient projection for medical imaging applications\" (US-9691168). https://patentable.app/patents/US-9691168","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9691168","json":"https://patentable.app/api/llm-context/US-9691168","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:31:48.826Z"}