Enhancing blood vessel using Hessian matrices and fractional derivatives
摘要
To detect cardiovascular diseases, some efforts have been made, such as computer-assisted automatic diagnosis (CAD) by medical image processing like angiographies. To correct problems derived from this step, some algorithms have been proposed. In this work, an algorithm for automatic blood vessel detection on angiographies is presented. It is based on the Grünwald-Letnikov fractional derivative (GLFD) to compute the Hessian matrix and its eigenvalues, as well as a set of 20 angiographies with their respective ground-truth images. The algorithm’s performance was evaluated using the area under the receiver operating characteristic curve (AUROC) and the full interval of fractional orders of derivatives in the range