BACKGROUND The morphological changes of the retinal blood vessels in retinal images are important indicators for diseases like diabetes, hypertension and glaucoma. Thus the accurate segmentation of blood vessel is of diagnostic value. METHODS In this paper, we present a novel method to segment retinal blood vessels to overcome the variations in contrast of large and thin vessels. This method ...

Article history: Available online 2 April 2013

Modern medical imaging techniques enable the acquisition of in vivo high resolution images of the vascular system. Most common methods for the detection of vessels in these images, such as multiscale Hessian-based operators and matched filters, rely on the assumption that at each voxel there is a single cylinder. Such an assumption is clearly violated at the multitude of branching points that a...

Pressure vessel is a container used to store fluids under pressure and temperature. The fluids can be air, water, chemicals, fuel, gases etc. are most commonly used in food and chemical industries, oil refineries and so on. Pressure vessel is subjected to thermal and structural loads for power plant applications. Since the pressure vessel are subjected to both structural and thermal loads stres...

For the automatic detection of retinal blood vessels a preprocessing of the noisy original images is necessary. Retinal blood vessels are assumed to be line-like structures and can therefore be enhanced via convolution with suitable, elongated kernels. Consequently we use the local Radon kernel as a prototype of an elongated kernel for this task. The Radon kernel is rotated at different angles ...

We report a one-pot, closed-vessel enzymatic assay that eliminates carryover contamination while preserving robust DNA amplification in loop-mediated isothermal amplification (LAMP), providing reliable and rapid detection of target DNA in contaminated samples.

Offshore platforms and windmills are constructed by assembling huge mechanical structures transported heavy lift vessels. The construction process comprises two interconnected operations, the dynamic positioning (DP) of vessel lifting loads. DP system is commonly designed tuned for case that there no load or free-hanging (mode 1). During transition from to connected a which mounted platform 2),...

In this research, we constructed functions that are necessary for the operation simulation system which assists medical students to inhibit brain aneurysm from exploding. The system reported in this paper is “detection of blood vessels”, “detection of brain aneurysm” and “route planning to brain aneurysm”. Not only the detection method but also the method to reduce the miss detection is realize...

in this paper, we describe a case of an aneurysmal circumflex artery connected to the coronary sinus through a fistula in a 40-year-old man with a two-year history of palpitation and chest pain. we discussed surgical management for patients with coronary artery fistula (caf), particularly for asymptomatic patients with a small left-to-right shunt .

anomalies of origin, course, and distribution of coronary arteries, including single coronary artery, are well known in patients with tetralogy of fallot. however, to the best of our knowledge, there is no published case report of pentalogy of fallot with a single coronary artery. herein, we introduce a 22-year-old female patient diagnosed via echocardiography and cardiac catheterization preope...