Intracranial mesenchymal chondrosarcoma is one of the rare tumors of the central nervous system, which often presents as an aggressive-appearing extra-axial hypervascular tumor at the falx cerebri. The tumor presents mostly in young adults, while meningioma or metastatic intracranial tumor most commonly in aged people. However, its imaging findings are non-specific. In this article, we present ...

Public organisations often face knowledge management problems caused by organisational mobility, the continual and pervasive movement of staff between units and departments. This can be a strength, but also introduces problems of loss of experience and reduced efficiency and effectiveness in working. The Pellucid project is developing a knowledge management system to assist in such situations. ...

Fetal central nervous system midline structures represent an essential landmark for the confirmation of normality or for the identification of severe pathology. The ultrasound examination of the fetal brain using modern 3D techniques allows the creation of high sensitivity reconstructions. The facility of 3D volume acquisition permits the identification of corpus callosum, median septum, cavum ...

The German waltzing guinea pig is a new strain of animals with yet unknown gene mutation(s) displaying recessively inherited cochleovestibular impairment. The homozygous animals (gw/gw) are deaf already at birth and display typical waltzing behavior throughout life. The heterozygous animals (gw/+) do not suffer from hearing loss and vestibular symptoms. The present thesis is focused on the homo...

A tapetoretinal degeneration combined with a marginal corneal dystrophy was described by Bietti in three patients (two of whom were brothers) in 1937.' The fundus picture was reported to be similar to that of retinitis punctata albescens, but the spots, located mainly at the posterior pole, were refractile, polygonal, and could be seen at all levels of the neuroretina. Pigment changes were seen...

background and aim: an important criterion for success assessment of implant-supported prostheses is marginal fit. vertical and horizontal discrepancy can result in loosening of the prosthetic screw, crestal bone resorption, peri-implantitis and loss of osseointegration. despite careful attention to waxing, investing, and casting, marginal discrepancies are inevitable. the aim of this study was...

objective: this experimental in vitro study compared marginal adaptation of indirect composite, glass-ceramic inlays and direct composite. materials and methods: seventy-five recently extracted human molars were randomly divided into three groups (n=25) and mesio-occluso-distal cavities with the same dimensions were prepared in the teeth. indirect composite and glass-ceramic inlays were fabrica...

age related macular degeneration (amd) is the most common cause of visual impairment in the population above 64 years of age in developed countries. most cases of severe vision loss due to amd are caused by exudative changes in the macula. extensive research on amd has led to advances in its prophylaxis and treatment in recent years. photodynamic therapy (pdt) was developed in late 1990's ...