Introduction Endoscopic ultrasound (EUS) combines endoscopic visualisation of the gastrointestinal tract with high frequency ultrasound within the structure of a modified endoscope. The merging of these two technologies enables precise imaging of the layers of the gastrointestinal wall as well as accurate assessment of extraluminal structures, thereby facilitating therapeutic intervention. This...

Introduction: There is ever increasing evidence to suggest that transradial catheterization is associated with fewer access site complications, shorter length of stay, and improved patient comfort. A principle concern remains the potential for radial artery occlusion (RAO) with a reported incidence ranging from 10-30%. One of the traditional methods used to diagnose radial artery occlusion is i...

Objective-To determine the effect of ultrasound therapy on hydroxyproline (HP) content in superficial digital flexor tendon (SDFT) in horses.Design - Experimental in vivo study.Animals - Eight adult castrated horses.Procedure- The mediocaudal surface of right metatarsal bone in was exposed and after complete separation of SDFT, it was splitted (striking 15 times) in full thickness in longitudin...

   Background: Developmental dysplasia of hip (DDH) is a common childhood disorder, and ultrasonography examination is routinely used for screening purposes. In this study, we aimed to evaluate a modified combined static and dynamic  ultrasound technique for the detection of DDH and to compare with the results of static and dynamic ultrasound techniques.    Methods:In this cross-sectional study...

Contrast resolution and detail resolution are two important parameters in ultrasound imaging. This paper presents a new method to enhance these parameters, simultaneously. A parallel auxiliary beamformer has been employed whose weightings are such that an estimation of the leaked signal through the main beamformer is obtained. Then the output of main beamformer is modified according to the ...

The effects of ultrasonic irradiation, the chelating agent modified Fenton reaction, and a combination of ultrasound and the Fenton method in removing petroleum contaminants from a soil were studied. The results showed that the contaminant removal rate of the Fenton treatment combined with an oxalic acid chelating agent was 55.6% higher than that without a chelating agent. The average removal r...

Surface waters to be used as resource for drinking water, waste water and sludge produced in treatment processes are very complex media containing soluble, colloidal and particulate matter. Apart from inert or dead matter the colloidal and particulate phase is mainly composed by organic bio-particles (viruses, bacteria, protozoa). Treatment processes like disinfection of potable water, hygienis...

A new technique for elastic registration of ultrasound images is proposed and evaluated. The algorithm is fast and robust, and has potential for intra-operative applications. It is a modified version of HAMMER technique, which was developed to elastically register magnetic resonance images of brain. A general concept of attribute vectors is employed to find correspondence across images, and new...