Both photoacoustic imaging and power Doppler ultrasound are capable of producing images of the vasculature of living subjects, however, the contrast mechanisms of the two modalities are very different. We present a quantitative and objective comparison of the two methods using phantom data, highlighting relative merits and shortcomings. An imaging system for combined photoacoustic and high-freq...

A comprehensive review focusing on advantages of high-power ultrasound in extraction, emulsification, crystallization, defoaming and modification of functional properties of food proteins was conducted to understand the ultrasonic mechanisms, important process parameters and components to consider for scale-up. The effect of highpower ultrasound on the overall extractability of soy proteins, to...

Abstract

The total output power from a medical ultrasound transducer has to be measured due to various reasons but in general they are related to assessment of performance and safety of equipment. The objective of this work was to develop a primary level ultrasonic power measurement system to establish standards for ultrasonic power measurement in Thailand. This system is being set up at the National In...

Introduction here have been significant advances in cataract surgery in last 3 decades, and improvements are ongoing. Studies have evaluated several methods to reduce the amount of ultrasound (US) energy intraoperatively; these include various power modulations, nuclear chopping techniques, microincision cataract surgery, and infusion and irrigation systems. Ultrasound power is considered a ris...

high‑intensity focused ultrasound (hifu) is a novel treatment modality used by scientists and clinicians in the recent decades. this modality has had a great and significant success as a noninvasive surgery technique applicable in tissue ablation therapy and cancer treatment. in this study, radio frequency (rf) ultrasound signals were acquired and registered in three stages of before, during, a...

Purpose. The aim of this study was to determine the value of 3D and 3D Power Doppler sonography in the detection of tumor malignancy in breast lesions and to find new diagnostic criteria for differential diagnosis. Methods. One hundred and twenty five women with clinically or mammographically suspicious findings were referred for 3D Power Doppler ultrasound prior to surgery. Histological diagno...