In Proc. of IEEE Conf. on CVPR’03, Madison, Wisconsin, 2003 Occlusion is a difficult problem for appearance-based target tracking, especially when we need to track multiple targets simultaneously and maintain the target identities during tracking. To cope with the occlusion problem explicitly, this paper proposes a dynamic Bayesian network which accommodates an extra hidden process for occlusio...

The central retinal artery (CRA) is a branch of the ophthalmic artery, which is the first branch of the internal carotid artery. The CRA supplies blood to the surface of the optic disc. From here it divides into two main branches (superior and inferior); these then further divide into temporal and nasal branches, which supply blood to the four quadrants of the retina. The outer retina is suppli...

The location of objects in images is diicult owing to the view variance of geometric features but can be determined by developing view-insensitive descriptions of the intensities local to image points. View-insensitive descriptions are achieved in this work by describing points in terms of the responses of steerable lters at multiple scales. Owing to the use of multiple scales, the vector for e...

The central retinal artery (CRA) is a branch of the ophthalmic artery, which is the first branch of the internal carotid artery. The CRA supplies blood to the surface of the optic disc. From here it divides into two main branches (superior and inferior); these then further divide into temporal and nasal branches, which supply blood to the four quadrants of the retina. The outer retina is suppli...

ZusammenfassungComputed tomography angiography (CTA) is one of the most commonly used modalities in diagnosis cerebrovascular diseases like ischemic strokes. Usually, anatomy interest stroke cases Circle Willis and its peripherals, cerebral arteries, as these vessels are prominent candidates for occlusions. The occlusions remains challenging, not only because large amount surrounding but also d...

introduction :   branchretinal vein occlusion (brvo), in which one of the branches of the main vein are blocked, andcentral retinal vein occlusion (crvo) in which the main vein of the eye is blocked    often occur  in elderly people and are the second to diabetes in producing disease of the vessels of the retina. the main causes of vein occlusions in middle and young aged population is not well...

Retinal vein occlusions may decrease visual acuity. There is no known therapy to treat ocular thrombosis. The authors used fondaparinux, an ultra-low-molecular-weight heparin, to treat 13 consecutive cases of recent-onset retinal vein occlusions. Two patients with renal insufficiency were not included. Eight central retinal vein occlusions and 5 branch retinal vein occlusions in 13 patients wer...

BACKGROUND AND PURPOSE Occlusion of major cerebral arteries is the primary source of tissue damage in ischemic stroke and the target of thrombolytic therapy. We hypothesized that large infarcts in more proximal vascular occlusions correspond with substantially increased ischemic lesions shown on initial apparent diffusion coefficient (ADC) maps. METHODS Initial ADC lesions in 120 patients wit...

BACKGROUND AND PURPOSE Although mechanical thrombectomy (MT) has an encouragingly high recanalization rate in treating stroke, it is associated with severe complications of which the underlying factors have yet to be identified. Because MT is a mechanical approach, the mechanical properties of the thrombus might be crucial for its success. The present study assesses the effect of thrombus lengt...

Reactive hyperemia was studied in cat sartorius muscle by measurement of venous outflow and capillary red cell velocity following occlusions of 5-120 s. The peak value for volume flow rose in a graded manner as occlusion duration increased, reaching a level of 280% above control following 120 s of occlusion. By contrast, peak values for capillary flow were 200% above control even after short (1...