Ultrasound is the most rapidly developing technique in musculoskeletal imaging. Continuing technological advances have broadened its application, such that it may now replace MR imaging in many specific clinical settings. The main drawbacks of musculoskeletal ultrasound remain a strong operator dependence and the lack of standardized scanning protocols. To overcome this limitation, the European...

The silk yarn containing Ag nanoparticles was prepared through the chemical reduction under ultrasound irradiation. In this system, ethylene glycol served as a reduction reagent and protecting silver nanoparticles from aggregation. The effect of some parameter, such as power of ultrasound irradiation and temperature in growth of the nanometric Ag were studied. Particle sizes and morphology of n...

A new measurement technique is being developed by NASA to measure off-surface flow fields. This method, Doppler global velocimetry, will allow quantification of complex three-dimensional flow fields at video camera rates. The entire flow field structure within a selected plane is measured simultaneously rather than by scanned, point-by-point measurements using conventional laser velocimetry. To...

A technique is developed to simultaneously acquire ultrasound and photoacoustic (PA) images based on a linear transducer array. The system uses conventional ultrasound for rapid identification of potential targets. After a target is identified, the ultrasound echo and PA signals can be simultaneously obtained with optimized excitation and a signal collection sequence. The corresponding ultrasou...

Ultrasound imaging has been used extensively to detect abnormalities of the non-lactating breast. In contrast, the use of ultrasound for the investigation of pathology of the lactating breast is limited. Recent studies have re-examined the anatomy of the lactating breast highlighting features unique to this phase of breast development. These features should be taken into consideration along wit...

The use of ultrasound is fundamental to the practice of urology. In order for urologists to best use this technology on behalf of their patients, they must have a thorough understanding of the physical principles of ultrasound. Understanding how to tune the equipment and to manipulate the transducer to achieve the best-quality image is crucial to the effective use of ultrasound. The technical s...