Localization and tracking of cryo-balloon during interventional fluoroscopy imaging

摘要

A method for the detection of a balloon catheter within a fluoroscopic image, including: removing noise from a fluoroscopic image; detecting edges of a balloon catheter in the fluoroscopic image, wherein the detected edges include subsets of connected edges; extracting an edge subset from the subsets of connected edges; fitting a model to the extracted edge subset; removing outliers of the extracted edge subset based on the fitting of the model; adding the extracted edge subset without the outlier to a data set; repeating the extracting, fitting, removing and adding steps for the remainder of the subsets of connected edges; and fitting the model to the data set, wherein the data set is indicative of the balloon catheter.

主权项

1. A method for the detection of a balloon catheter within a fluoroscopic image, comprising:
removing noise from a fluoroscopic image; detecting edges of a balloon catheter in the fluoroscopic image, wherein the detected edges include subsets of connected edges; extracting an edge subset from the subsets of connected edges; fitting a model to the extracted edge subset; removing outliers of the extracted edge subset based on the fitting of the model; adding the extracted edge subset without the outlier to a data set; repeating the extracting, fitting, removing and adding steps for the remainder of the subsets of connected edges; and fitting the model to the data set, wherein a central linear structure is present and detectable within the image of the balloon catheter, and the central linear structure is used to limit a search area of the balloon catheter or verify that the balloon catheter was correctly detected, wherein the method further comprises estimating pressure applied to the balloon based on a state of the balloon after its deformation and known properties of a three-dimensional model of the balloon.