Ultrasound imaging is now in very widespread clinical use. The most important underpinning technologies include transducers, beam forming, pulse compression, tissue harmonic imaging, contrast agents, techniques for measuring blood flow and tissue motion, and three-dimensional imaging. Specialized and emerging technologies include tissue characterization and image segmentation, microscanning and...

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...

We report a photoacoustic imager that utilizes a focused laser beam in combination with a 20 MHz ultrasound focusing transducer to obtain micron-resolution tissue images over a long working distance. The imager is based on a ring transducer that combines ultrasonic and laser beams collinearly and confocally in a monolithic element. The combination of focused laser beam and short pulse irradiati...

Child cortical bone tissue is rarely studied because of the difficulty of obtaining samples. Yet the preparation and ultrasonic characterization of the small samples available, while challenging, is one of the most promising ways of obtaining information on the mechanical behavior of non-pathological children’s bone. We investigated children’s cortical bone obtained from chirurgical waste. Stif...

s and Proceedings Fowlkes JB, Gardner EA, Carson PL, Ivey JA, Rubin JM: "Acoustic Interruption of Ultrasound Contrast Agents for Blood Flow Evaluation", Procs., 39th Annual Conv. of the American Institute of Ultrasound in Medicine, San Francisco, CA, March 26-29, 1995. Rubin JM, Adler RS, Fowlkes JB, Spratt S, Pallister JE, Chen J-F, Carson PL (1995) Fractional Moving Blood Volume Estimation Us...