Apparatus and method for evaluating proceeding route of guide wire
Inventors
KWEON, Jihoon • Kim, Young Hak • LEE, June Goo • Moon, Young Jin • Choi, Jaesoon
Assignees
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Publication Number
US-12138401-B2
Publication Date
2024-11-12
Expiration Date
Abstract
The present invention relates to an image processing system for a catheter operation. One embodiment comprises: a storage unit for at least temporarily storing a plurality of candidate routes on which a guide wire can proceed on a changing route caused by vascular bifurcations while proceeding from a first point by using a blood vessel image; and a processor for selecting, from an image inputted while an operation proceeds, at least one route corresponding to the current shape of the guide wire on the basis of a similarity comparison between the current shape of the guide wire and each of the plurality of candidate routes.
Core Innovation
The invention relates to an image processing system and method for a catheter procedure in which a guidewire is to proceed from a first point along a plurality of candidate routes. A route is changed by vascular bifurcation points, and the candidate routes are provided using a blood vessel image. The system selects at least one route that corresponds to a current shape of the guidewire during the catheter procedure based on a comparison of similarities.
The processor evaluates and provides a probability of a match between the guidewire and each of the plurality of candidate routes. The probability of the match is generated by calculating and comparing correlation information between the guidewire and each of the plurality of candidate routes, where the comparison is performed using an image input during the catheter procedure. Route selection is therefore based on a current deformable shape of the guidewire and correlation-based probabilities.
The described approach corrects similarity using blood vessel images captured during operation, including displacement between vessel images due to catheter tip displacement and patient motion. Candidate routes include at least one blood vessel connecting an entry point of the guidewire to a target point or a blood vessel adjacent to that connecting blood vessel, and may be extracted from a prior contrast-enhanced blood vessel image captured before the catheter procedure.
Claims Coverage
The partial content includes three independent claims (system, method, and non-transitory computer-readable storage medium), all centered on route selection for a guidewire using correlation-based probabilities computed from image input and compared against stored candidate routes derived from blood vessel images. Across the independent claims, there are four core inventive features that define the selection and matching framework.
Candidate routes stored from a blood vessel image with vascular bifurcation changes
A memory stores a plurality of candidate routes on which a guidewire is to proceed from a first point, using a blood vessel image, where a route is changed by vascular bifurcation points.
Selecting a route from image-input similarity to the current guidewire shape
A processor selects at least one route corresponding to a current shape of the guidewire based on a comparison of similarities between the current shape of the guidewire and each of the plurality of candidate routes, using an image input during the catheter procedure.
Probability of a match evaluated and provided per candidate route
The processor or method evaluates and provides a probability of a match between the guidewire and each of the plurality of candidate routes.
Correlation-information-based probability of match between the guidewire and candidate routes
The probability of the match is generated by calculating and comparing correlation information between the guidewire and each of the plurality of candidate routes.
All three independent claims define an image-processing framework in which candidate vascular routes changed by vascular bifurcations are stored from blood vessel images, the current guidewire shape from in-procedure image input is compared to the candidates for similarity, and at least one route is selected based on an evaluated probability of match. The match probability is generated from calculated and compared correlation information between the guidewire and each candidate route.
Stated Advantages
Not explicitly described in patent.
Documented Applications
Not explicitly described in patent.
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