US 8,787,635 B2 · Optimization of multiple candidates in medical device or feature tracking

Abstract

Multiple candidates are optimized in medical device or feature tracking. Possible locations of medical devices or features for each of a plurality of different times are received. The possible locations of devices are modeled using a probability function. An iterative solution to obtain the maximum of the probability function determines the possible locations to be used as the locations of the medical devices or features for each time. Where two or more medical devices or features are provided with a geometric relationship, such as being connected by a detected guide wire, the probability function may account for the geometric relationship, such as a geodesic distance between the possible locations for the two medical devices.

Claims20

Dependent claims

A method for determining a first location of a first medical device in imaging, the method comprising:

obtaining a plurality of first candidate locations of a first medical device for each frame of a plurality of frames of medical data representing a patient, wherein at least one first candidate location of the plurality of first candidate locations does not represent the first medical device;
obtaining a plurality of second candidate locations of a second medical device for each frame of the plurality of the frames of the medical data;
selecting, with a processor, the first location of the first medical device in each frame of the plurality of frames from the plurality of first candidate locations for the respective frame, the selecting being iterative as a function of a probability function, the probability function being a function of the plurality of first candidate locations and the plurality of second candidate locations and distances between the plurality of first candidate location and the plurality of second candidate locations;
and
outputting an indication of the first location for at least one frame of the plurality of frames.

2 more elements

In a non-transitory computer readable storage medium having stored therein data representing instructions executable by a programmed processor for optimizing multiple candidates in medical device or feature tracking, the non-transitory computer readable storage medium comprising instructions for:

receiving a plurality of detected positions of a medical device or feature for each image frame of a plurality of image frames representing a patient, wherein at least one detected position of the plurality of detected positions does not represent the medical device or feature;
and
selecting one detected position of the plurality of detected positions in each image frame of the plurality of image frames, the selecting iteratively solving, for each image frame of the plurality of image frames, a probability function based on the plurality of detected positions in the image frame and a neighborhood of other image frames of the plurality of image frames.

Dependencies are inferred from the claim text.

Optimization of multiple candidates in medical device or feature tracking

Life of this patent

Optimization of multiple candidates in medical device or feature tracking

Life of this patent

Abstract

Claims20