Quantification of Global Tortuosity in Retinal Blood Vessels

Mature Primate Retinal Blood Vessels

Purpose. To characterize developing retinal blood vessels with vascular markers and to relate the histochemical profile of maturing vessels to morphologic stages in retinal vascular development. Methods. Vessels were examined in frozen and paraffin-embedded retinas and in wholemounts of Macaca monkeys ranging in age from fetal day 75 (F75) to adulthood. Endothelial cells were visualized immunoh...

Quantification of Tortuosity and Fractal Dimension of the Lung Vessels in Pulmonary Hypertension Patients

UNLABELLED Pulmonary hypertension (PH) can result in vascular pruning and increased tortuosity of the blood vessels. In this study we examined whether automatic extraction of lung vessels from contrast-enhanced thoracic computed tomography (CT) scans and calculation of tortuosity as well as 3D fractal dimension of the segmented lung vessels results in measures associated with PH. In this pilot ...

Direction-Based Segmentation of Retinal Blood Vessels

Using MAS to Detect Retinal Blood Vessels

The segmentation of retinal vasculature by color fundus images analysis is crucial for several medical diagnostic systems, such as the diabetic retinopathy early diagnosis. Several interesting approaches have been done in this field but the obtained results need to be improved. We propose therefore a new approach based on an organization of agents. This multi-agent approach is preceded by a pre...

Width Measurement from True Retinal Blood Vessels

A retinal image can establish the state of human body by simply providing the information about what is happening inside it. Because the AVR status of blood vessels is having good correlation with hypertension, coronary, heart disease and stroke. However they require the accurate extraction of distinct blood vessels and width measurement. The Existing width measurement techniques met with a cha...