The anti-neutrophil cytoplasmic antibody (ANCA) associated vasculitides are a group of uncommon diseases characterised by inflammatory cell infiltration and necrosis of blood vessel walls. ANCA there has been considerable progress towards understanding their pathogenesis. This results in endothelial activation with increased transmigration and adherence of neutrophils to vessel walls. Specific ...

Introduction: Magnetic resonance imaging (MRI) is a useful imaging tool for visualization of vessel walls and characterization of atherosclerotic lesions, providing high resolution and multiple imaging planes with no risk of radiation. The use of MR technology is, however, limited in imaging of deep-seated arteries, primarily due to insufficient signal-to-noise ratio (SNR) with a surface coil. ...

Amyloidosis is characterized by an extracellular deposition of insoluble fibrils. Amyloid deposition caused various clinical symptoms associated with affected organs. Secondary amyloidosis without renal involvement and chronic inflammatory conditions is rarely reported. We experienced a case of secondary intestinal amyloidosis presented with recurrent hematochezia and abdominal pain in a 54-yea...

AIM Cerebral cavernous malformations (CCMs) are defined as a mulberry-like assembly of thin walled vascular sinusoids lined by a thin endothelium lacking smooth muscle and elastin, displaying no intervening brain parenchyma. In this study, we analyse the congruency of histopathological features with the current clinical definition on a large series of neuroradiologically verified CCMs. METHOD...

The present study compares the dynamic mechanical properties and the contents of collagen and elastic fibers (oxytalan + elaunin + fully developed elastic fibers) of mice and rat lung strips. Resistance, elastance (E), and hysteresivity (eta) were obtained during sinusoidal oscillations. The relative amounts of blood vessel, bronchial, and alveolar walls, as well as the mean alveolar diameter w...

Intravascular ultrasound (IVUS) is known to be the reference tool for preoperative vessel lesion assessments and for endovascular therapy planning. Nevertheless, IVUS echograms only provide subjective information about vessel wall lesions. Since changes in the vascular tissue stiffness are characteristic of vessel pathologies, catheter-based endovascular ultrasound elastography (EVE) has been p...

Xylem of stems and roots of three species of Astelia, a monocot with relatively unspecialized xylem, was examined with scanning electron microscopy (SEM) to better understand structural conditions intermediate between tracheids and vessel elements. Both macerations and hand-sectioned material were studied. Tracheary elements of roots of Asteliaceae can be characterized as tracheids, with some d...

In this paper, a new approach is presented for accurately delineating the artery walls in adaptive optics images. To the best of our knowledge, this is the first paper addressing this problem in this context. To achieve this goal, we propose an automatic two-steps process. The position of inner walls of each vessel is first roughly estimated. Then, a deformable model embedding a parallism const...

Abstract We propose an amplitude-modulated pump ultrasound irradiation sequence to generate bubble cavitation for efficient sonoporation. By matching the envelope wavelength of modulated wave four times vessel diameter, we aimed improve efficiency collapse near wall and extend duration during repeated application sequence. Using agarose-based blood phantom, compared effects with those normal si...