Dynamic overlay of anatomy from angiography to fluoroscopy
AssigneeSiemens Aktiengesellschaft
InventorsGuillaume Dumont, Peng Wang
Life of this patent
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Abstract
An overlay of anatomy is created for a fluoroscopy image. Anatomy detected in angiographic images is used to locate anatomy in the fluoroscopy image. For each cardiac phase, the anatomy is detected multiple times from different cardiac cycles using angiographic images. The fluoroscopic overlay for each cardiac phase is formed from a combination of angiographic candidates fit from the different cardiac cycles to the fluoroscopic image. To further enhance the combination, prediction of the anatomy position from one phase to the next phase is used.
Claims21
A method for generating an overlay of anatomy in a fluoroscopy image, the method comprising:
- acquiring, with an angiograph, an angiograph image representing the anatomy of a patient at a first phase of a first cardiac cycle of the patient;
- acquiring, with a fluoroscope, a fluoroscopic image representing the anatomy of the patient at the first phase of a second cardiac cycle of the patient;
- determining, by a processor, a shape of the anatomy in the fluoroscopic image from the angiograph image;
- and
- generating the overlay of the anatomy as a graphic on the fluoroscopic image, the overlay being a function of the shape determined from the angiographic image.
In a non-transitory computer readable storage medium having stored therein data representing instructions executable by a programmed processor for generating an overlay of anatomy in a fluoroscopy image, the storage medium comprising instructions for:
- modeling a location of the anatomy of a patient in each of a plurality of frames of angiographic data over two or more heart cycles;
- for a first phase of the heart cycles, combining the locations from the different heart cycles, wherein the combining includes using a prediction of the location associated with a second phase, the combining resulting in combined location of the anatomy;
- and
- generating the overlay of the anatomy in the fluoroscopy image, the overlay being at the combined location.
A system for generating an overlay of anatomy in a fluoroscopy image, the system comprising:
- an angiography system configured to acquire a sequence of angiographic data representing a vessel of a patient at different phases in multiple heart cycles;
- a fluoroscopy system configured to acquire fluoroscopic data representing the vessel of the patient at a first one of the phases;
- and
- a processor configured to fit a first shape model of the vessel at the first phase in the angiographic data of each of the multiple heart cycles to the fluoroscopic data, to predict a second shape model associated with a second one of the different phases, to combine the fit shape models from the different heart cycles as a function of the second shape model, and to generate the overlay of the vessel on a fluoroscopic image from the fluoroscopic data.
Dependencies are inferred from the claim text.