The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 05, 2012
Filed:
Sep. 05, 2008
Benjamin J. Sapp, Philadelphia, PA (US);
Wei Zhang, Plainsboro, NJ (US);
Bogdan Georgescu, Plainsboro, NJ (US);
Simone Prummer, Neunkirchen am Brand, DE;
Dorin Comaniciu, Princeton Junction, NJ (US);
Benjamin J. Sapp, Philadelphia, PA (US);
Wei Zhang, Plainsboro, NJ (US);
Bogdan Georgescu, Plainsboro, NJ (US);
Simone Prummer, Neunkirchen am Brand, DE;
Dorin Comaniciu, Princeton Junction, NJ (US);
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A method and system for detecting a spatial and temporal location of a contrast injection in a fluoroscopic image sequence is disclosed. Training volumes generated by stacking a sequence of 2D fluoroscopic images in time order are annotated with ground truth contrast injection points. A heart rate is globally estimated for each training volume, and local frequency and phase is estimated in a neighborhood of the ground truth contrast injection point for each training volume. Frequency and phase invariant features are extracted from each training volume based on the heart rate, local frequency and phase, and a detector is trained based on the training volumes and the features extracted for each training volume. The detector can be used to detect the spatial and temporal location of a contrast injection in a fluoroscopic image sequence.