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Ultrasound (US) is used in the clinical setting not only for diagnosis but also for therapy. As a therapeutic US technique, high-intensity focused ultrasound (HIFU) can be applied to treat cancer in a clinical setting. Microbubbles increased temperature and improved the low therapeutic efficiency under HIFU; however, microbubbles have room for improvement in size, stability, and targeting abili...

Introduction Ultrasound is widely applied in the clinical field today, such as ultrasound contrast agent imaging, High Intensity Focused Ultrasound (HIFU), Extracorporeal Lithotripsy, sonodynamic therapy. Some of these have a close relation to the dynamic behavior of micro bubbles and that of a bubble cloud. In an ultrasound imaging, micro bubbles are used as contrast agents. Extracorporeal Foc...

The aim of this study was to determine the feasibility and safety of high intensity focused ultrasound's (HIFU) in pancreatic diseases. Twelve pigs were divided into three groups. The pancreases of pigs in Group A were ablated directly with HIFU, but those in Group B and C ablated by extracorporeal HIFU. The pigs in Group C were sacrificed at day 7 after HIFU. Serological parameters were determ...

PURPOSE To evaluate the clinical value of the contrast agent SonoVue in the treatment of uterine fibroids with ultrasound-guided high intensity focused ultrasound (HIFU) therapeutic ablation. MATERIALS AND METHODS A total of 291 patients with solitary uterine fibroid from three centers were treated with ultrasound-guided HIFU. Among them, 129 patients from Suining Central Hospital of Sichuan ...

Background/introduction Breast fibroadenomata (FAD) are the most common breast lesions in woman. For palpable lesions, three options are available: reassurance (with or without follow-up), vacuum assisted mammotome (VAM) or surgical excision. High intensity focused ultrasound (HIFU) is a non-invasive ablative technique in which an ultrasound (US) beam propagates through tissue as a high-frequen...

High Intensity Focused Ultrasound (HIFU) allows non invasive treatment of uterine fibroids without anaesthesia and a fast return to normal activity [1]. For this thermotherapy procedure, MR guidance provides anatomical images to plan treatment of the fibroid, thermal maps to quantify the HIFU heating and contrast enhanced images to measure the induced nonperfused volume. This routine clinical p...

A new approach for characterizing high intensity focused ultrasound (HIFU) transducers is presented. The technique is based upon the acoustic streaming field generated by absorption of the HIFU beam in a liquid medium. The streaming field is quantified using digital particle image velocimetry, and a numerical algorithm is employed to compute the acoustic intensity field giving rise to the obser...

In this paper, we present a new approach for building and archiving web collections about events. Our approach combines the traditional focused crawling technique with event modeling and representation.

During application of high intensity focused ultrasound (HIFU) with therapy arrays, the existence of grating lobes can cause heating at unintended tissue regions. Therefore, the reduction of grating lobes in therapeutic arrays is an important goal. One way to reduce the grating lobes in therapy arrays is to excite the arrays with broadband signals (defined here as >10% fractional bandwidth). To...