Automated compromised right lung segmentation method using a robust atlas-based active volume model with sparse shape composition prior in CT

Many Is Better Than One: An Integration of Multiple Simple Strategies for Accurate Lung Segmentation in CT Images

“…Considering the distribution of density of thorax tissues in CT images, random walk [12] strategy is employed for extracting lung from the thorax region in this step. Random walk is a seed-based graph method in which an image is considered a discrete object described with a weighted graph, where image pixels are taken as nodes connected by undirected edges.…”

“…Recently, random-walk-based segmentations [12], in which graph optimization is employed to obtain accurate segmentation with user interaction based on selected seed pixels, are attracting increasing interest. Though this method shows excellent performance in image segmentation, it is sensitive to seed pixels.…”

Automatic segmentation of the spine by means of a probabilistic atlas with a special focus on ribs suppression

“…With both approaches, considerable research effort has been directed toward the construction of brain atlases . A variety of methods have been also proposed for the segmentation of other organs or anatomical structures by means of atlases . However, the number of studies related to the construction of spinal atlases is limited and some of them are centred on structures like the intervertebral discs or the spinal canal .…”

“…35 A variety of methods have been also proposed for the segmentation of other organs or anatomical structures by means of atlases. [36][37][38][39][40][41][42] However, the number of studies related to the construction of spinal atlases is limited and some of them are centred on structures like the intervertebral discs 43 or the spinal canal. 44,45 Regarding vertebrae, Hardisty et al 46 presented an algorithm to perform the segmentation of tumorinvolved vertebrae using demons deformable image registration and level set methods.…”

Caracterización Cuantitativa De La Patología Discal Y Lumbar Degenerativa Mediante Análisis De Imagen Por Resonancia Magnética Y Detección Y Segmentación De La Columna Vertebral en Pacientes Oncológicos a Partir Del Análisis De Imagen en Tomografía Computarizada.

“…En ambos casos, la mayoría de los esfuerzos se han dirigido hacia la construcción de atlas cerebrales [106]. También se han propuesto métodos para la segmentación basada en atlas de otros órganos o estructuras anatómicas, tales como cabeza y cuello [103], [107], corazón [108], [109], hígado [104], [105], [110]- [113], pulmones [114], [115] o incluso atlas para la segmentación de múltiples órganos [116]- [119]. Sin embargo, el número de estudios relacionados con la construcción de un atlas de la columna vertebral es limitado y algunos de ellos se centran en estructuras como los discos intervertebrales [120] o el canal vertebral [121], [122].…”