To simplify the procedure of blood vessel replacement operation and shorten the vascular anastomosis time, we developed a special artificial blood vessel which can be connected to native blood vessels without suture. The self-made sutureless blood vessel (SMSBV) was made from two titanium connectors and a Gore-Tex graft. To investigate blood compatibility and histocompatibility of the SMSBV, we...

Artificial vessel wall cultures, constructed by growing arterial endothelial cells on preformed layers of rat smooth muscle cells, were used to evaluate the effects of X-irradiation on tumor cellinduced tissue degradation. Bovine endothelial cells had radiation sensitivities similar to those of rat smooth muscle cells. Preirradiation of smooth muscle cells, before the addition of human fibrosar...

We have previously reported our attempts to produce microbubble aggregations, by making use of Bjerknes force, which acts to propel microbubbles and to adjust the size of aggregations. However, because we have used simple shape of artificial blood vessels, the behavior of aggregations in a capillary, e.g., probability to obstruct in bloodstream, possibility of embolization, has not been predict...

A 58-year-old man presented with paralysis and pain in the left leg, and a mass was found in his thigh. Because of the growth of the mass and the worsening of his symptoms, the patient visited our hospital. Multidetector computed tomography revealed a large deep femoral arterial (DFA) aneurysm. Surgical intervention was planned because of the large size of the aneurysm, the high risk of perfora...

Vessel segmentation algorithms are critical components of circulatory blood vessel analysis systems. We present a survey of vessel extraction techniques and algorithms, putting the various approaches and techniques in perspective by means of a classification of the existing research. While we target mainly the extraction of blood vessels, neurosvascular structure in particular, we also review s...

The capillary system is modelled by a fractal graph attached to a blood vessel. It is supplied with differential equations obtained from threedimensional model by the dimension-reduction procedure. The geometry and physical parameters of this system are described by a finite number of scaling parameters which allows for system to have self-reproducing solutions, solutions which are determined b...