Martín Gallegos-Duarte

Application of morphological connected openings and levelings on magnetic resonance images of the brain

In this article, several advanced connected transformations from mathematical morphology for computational neuroanatomy applications are developed. In particular, brain is separated from the skull in MRI T1 using morphological connected openings. The use of connected transformations allow the preservation of regions, without introduce new information. As a result, the segmented brains preserve by complete information of the original images being more reliable for the specialist who deals with information such as white and gray matter.

Dissociated Vertical Divergence

My genuine interest in the respective studies lies in that for some time at our institute we have been study-ing the neurofunctional and morphometric behavior of the cerebral cortex of children with congenital strabismus, especially in those children presenting dissociated deviation (DD), both its vertical (DVD) and horizontal (dissociated horizontal deviation, or DHD) manifestations.

Sequential application of viscous opening and lower leveling for three-dimensional brain extraction on magnetic resonance imaging T1

Abstract. A composition of the viscous opening and the lower leveling is introduced to extract brain in magnetic resonance imaging T1. The innovative transformation disconnects chained components and has better control on the reconstruction process of the marker inside of the original image. However, the sequential operator requires setting several parameters, making its application difficult. Due to this situation, a simplification is carried out on it to obtain a more practical method. The proposed morphological transformations were tested with the Internet Brain Segmentation Repository (IBSR) database, which is used as a benchmark among the community. The results are compared using the Jaccard and Dice indices with respect to (i) manual segmentations obtained from the IBSR, (ii) mean indices reported in the current literature, and (iii) segmentations obtained from the Brain Extraction Tool, since this is one of the most popular algorithms used for brain segmentation. The average indices of Jaccard and Dice indicate that the reduced transformation produces similar results to the other methods reported in the literature while the sequential operator presents a better performance.

Comparison of Granulometric Studies of Brain Slices from Normal and Dissociated Strabismus Subjects Through Morphological Transformations

Jorge D. Mendiola-Santibanez1, Martin Gallegos-Duarte2, Domingo J. Gomez-Melendez1, Angelica R. Jimenez-Sanchez3 and Israel M. Santillan-Mendez1 1Division de Investigacion y Posgrado de la Facultad de Ingenieria, Universidad Autonoma de Queretaro, Centro Universitario S/N, CP. 76010, Queretaro 2Posgrado de la Facultad de Medicina, Departamento de Investigacion, Universidad Autonoma de Queretaro, Clavel # 200, Fraccionamiento Prados de la Capilla, Santiago de Queretaro 3Universidad Politecnica de Queretaro, Carretera Estatal 420 S/N, El Rosario, El Marques, CP. 76240 Queretaro Mexico