ABSTRACT This paper presents an image processing method for information extraction from 3D images of vasculature. It automates the study of vascular structures by extracting quantitative information such as skeleton, length diameter, and vessel-to-tissue ratio for different vessels as well as their branches. Furthermore, it generates 3D visualization of vessels based on desired anatomical chara...

INTRODUCTION The descending branch of the lateral femoral circumflex artery is an option for coronary artery bypass grafting. OBJECTIVE To evaluate the early patency and adaptation of lumen diameter using multidetector computed angiotomography. METHODS Thirty-two patients were selected to undergo coronary artery bypass grafting using the descending branch of the lateral circumflex artery, t...

The capillary loop consists of an arterial or afferent branch and a venous or efferent branch. The main parameters to be evaluated are: length, diameter, density, venous plexus and morphological abnormalities. These elements should be evaluated in the distal row or near the nailfold. The normal number of capillaries per millimeter is from seven to twelve arranged in an inverted U-shape (Figure 1).

Most quantitative descriptions of neuronal dendrite morphology involve tabulations of measurements and correlations among them. The present work is an attempt to extract from such data a parsimonious set of parameters that are sufficient to describe the quantitative features of individual and pooled dendrites, including their statistical variability. A relatively simple stochastic (Monte Carlo)...

in order to assess and identify genetic diversity and genetic relationships of the 64 kabuli chickpeas genotypes, an experimental design was carried out in a simple lattice design (8×8) in 2009-2010 cropping season on the research field of college of agriculture and natural resource of tehran university. the results of phenotypic correlation showed that grain yield per plant had significant and...

ObjectiveThe aim of this study was to identify the incidence, angiographic and procedural predictors, and clinical outcome of acute side branch occlusion (SBO) following coronary stent implantation. MethodsIn total, 138 patients who underwent coronary artery stenting were included. The stents had covered 185 side branches with a luminal diameter greater than 1 mm and less than 2 mm. All the pro...

OBJECTIVE To investigate the response of retinal vessel diameters to photocoagulation treatment and their role for the success of laser treatment in patients with retinal vein occlusion. METHODS The study included 14 patients with branch vein occlusion or macular vein occlusion. The ophthalmologic examination included best-corrected visual acuity, biomicroscopy, fundus photography, and fluore...

Quantitative assessment of tree structures is very important for evaluation of airway or vascular tree morphology and its associated function. Our skeletonization and branch-point identification method provides a basis for tree quantification or tree matching, tree-branch diameter measurement in any orientation, and labeling individual branch segments. All main components of our method were spe...

objectives: precise radiographic assessment of the nasopalatine canal is required to prevent implant failure. the purpose of the current study was to determine the three dimensional (3d) morphology, as well as the dimensions of the nasopalatine canal using cone beam computed tomography (cbct). materials and methods: in this descriptive cross-sectional study, maxillary cbct images from 300 patie...

Two experiments were conducted to characterize changes associated with ontogenetic aging in coastal Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and to identify possible maturation "markers" for this species. In the first experiment (Experiment 1), scions of ages 1, 4 and 9 years were collected from four seed zones in field progeny tests and grafted onto 1-year-old rootstocks. In Experime...