Catheter calibration using template matching line interpolation algorithm

This paper presents a study case of specific angiographic X-ray image processing, such as quantitative cardiac analysis. During QCA it is very important to get precise and accurate results because these data are used to make a diagnosis or to plan an eventual intervention. The two main requests are influenced by many factors, such as: image resolution, type of the calibration, algorithm used for contour detection, size of the FOV, other parameters of the image. The studied calibration method is the one using catheter size, and it looks to find a general solution for all size FOVs and catheters. The algorithm can be implemented either on acquisition systems-in order to allow direct and fast quantification of the recorded sequences-, or on review stations-in order to enhance the 2D post-processing functionality.