A system to help physicians with fracture detection in stents.
Fractures in stents are usually detected by visual analysis, which may be affected by the presence of noise and image deformations. The lack of research into automating stent fracture detection has motivated this work, in which techniques are developed to facilitate diagnosis by observation (Image Delineation Algorithm) and, when possible, to point out areas of possible fractures (Fracture Detection Algorithm). The use of classical elements and the development of additional computational techniques contributed to the process of image analysis, providing a possible way to aid medical diagnosis. The developed algorithms are applied to image samples from femoropopliteal arteries, and the results are compared to those of medical diagnosis. As a result, aside from the improvement of image display, a kappa concordance index of 0.878 for the detection of fractures confirms the method as satisfactory, with very good agreement with medical diagnosis.
Dante Pazzanese Institute of Cardiology, São Paulo, São Paulo, Brazil; Fundação Educacional Inaciana, São Paulo, São Paulo, Brazil; São Judas University, São Paulo, São Paulo, Brazil.
Pier Marco
PM
Ricchetti
Denys Emilio Campion
DE
Nicolosi
Antonio Massamitsu
AM
Kambara
Aron José Pazin
AJ
de Andrade
D000465:Algorithms; D001158:Arteries / Q000601:surgery; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D011475:Prosthesis Failure; D015607:Stents
Algorithm; Image analysis; Stent fracture detection; Stent image