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.

A system to help physicians with fracture detection in stents

Fractures in stents are usually detected by visualanalysis, which may be affected by the presence of noiseand image deformations.The lack of research into automatingstent fracture detection has motivated this work, inwhich techniques are developed to facilitate diagnosis byobservation (Image Delineation Algorithm) and, whenpossible, to point out areas of possible fractures (FractureDetection Algorithm). The use of classical elements andthe development of additional computational techniquescontributed to the process of image analysis, providing apossible way to aid medical diagnosis.The developed algorithmsare applied to image samples from femoropoplitealarteries, and the results are compared to those of medicaldiagnosis. As a result, aside from the improvement ofimage display, a kappa concordance index of 0.878 forthe detection of fractures confirms the method as satisfactory,with very good agreement with medical diagnosis.

Aplicação das técnicas matemáticas avançadas para auxílio e diagnóstico em imagens na detecção de fraturas em stents / Aplicação das técnicas matemáticas avançadas para auxílio e diagnóstico em imagens na detecção de fraturas em stents

O implante de stents em região vascular periférica tem sido apontado como uma solução para o tratamento endovascular, e tem sido largamente utilizado. No entanto, há estudos que apontam com certa frequência s ocorrência de problemas ligados a fraturasde stents, as quais devem ser diagnosticadas e convenientemente tratadas...