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AssigneeSiemens Aktiengesellschaft
InventorsBenjamin J. Sapp, Wei Zhang, Bogdan Georgescu, Simone Prummer, Dorin Comaniciu
Estimating the term…
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.
A method for detecting a spatial and temporal location of a contrast injection in a fluoroscopic image sequence, comprising:
An apparatus for detecting a spatial and temporal location of a contrast injection in a fluoroscopic image sequence, comprising:
A computer readable medium encoded with computer executable instructions for detecting a spatial and temporal location of a contrast injection in a fluoroscopic image sequence, the computer executable instructions defining steps comprising:
Dependencies are inferred from the claim text.