Systems and methods for cutting materials are disclosed herein In some embodiments, methods of at least partially severing a capillary vessel can include: focusing a laser on a predetermined point on the capillary vessel, said capillary vessel containing a biological sample; and cutting the capillary vessel using a laser at the predetermined point. In some embodiments, the methods further can i...

With the development of intelligent control and modern communication technology, Unmanned Surface Vessel (USV) will soon become another important unmanned platform after drones vehicles. vessel are easily disturbed by wind, waves currents during navigation. Solving problem vessel's course keeping navigation has one key technologies in research vessel. Aiming at navigation, this paper firstly ca...

An automatic algorithm capable of segmenting the whole vessel tree and calculate vessel diameter and orientation in a digital ophthalmologic image is presented in this work. The algorithm is based on a parametric model of a vessel that can assume arbitrarily complex shape and a simple measure of match that quantifies how well the vessel model matches a given angiographic image. An automatic ves...

The multiscale second order local structure of an image (Hessian) is examined with the purpose of developing a vessel enhancementfilter. A vesselness measure is obtained on the basis of all eigenvalues of the Hessian. This measure is tested on two dimensional DSA and three dimensional aortoiliac and cerebral MRA data. Its clinical utility is shown by the simultaneous noise and background suppre...

We propose a geographical visualization to support operators of coastal surveillance systems and decision making analysts to get insights in vessel movements. For a possibly unknown area, they want to know where significant maritime areas, like highways and anchoring zones, are located. We show these features as an overlay on a map. As source data we use AIS data: Many vessels are currently equ...

The vasculitides affecting large and medium-sized vessels are heterogeneous. This group includes such disorders as giant cell arteritis, Takayasu's disease, and sarcoidosis. There are several challenges that may arise in the care of patients with these disorders. Diagnosis may be elusive when initially evaluating patients with large-vessel vasculitis. Most serologic markers are not specific, an...

Restenosis secondary to intimal hyperplasia within small diameter intravascular stents is a major problem in the adult population with atherosclerotic vascular disease. In contrast, most large series of stent implants in congenital lesions suggest that restenosis is rarely a problem. Schneider and colleagues, in this issue of Heart, point out that paediatric patients grow and that stents implan...

A group of epithelial cells in the thymus guard against autoimmunity by presenting self-antigens to developing T cells—those T cells that take the bait are then killed. On page 1267, Rossi et al. identify the signaling pathway that creates this epithelial barrier and the cells that activate this pathway. Self-reactive T cells are eliminated when they latch on to selfantigens presented by a smal...

Introduction: Microbubbles are widely used as contrast agent in diagnostic ultrasound. Recently they have shown good potential for applications in the therapeutic field such as drug delivery to the brain. Recent studies have shown focused ultrasound in conjunction with injected micro-bubbles could temporarily disrupt blood-brain barrier and let therapeutic agents transport into...