82 results about "High intensity focused" patented technology

In a method for automatically selecting a region of interest covering a heated area, in the context of high intensity focused ultrasonic technology during acquisition of magnetic resonance data, phase data of a scanned area are acquired, and a heated area is identified in the scanned area according to the phase data acquired. An image is reconstructed and displayed, and in the displayed image a region of interest covering the heated area is automatically demarcated according to a predetermined size of said region of interest that covers and is larger than the heated area. The method causes the heated area to be automatically and completely included in the region of interest; and eliminates the instability of a manual selection of the region of interest.

A MRI guided high-intensity focused ultrasonic therapy system is composed of a MRI unit including the first therapeutic bed and a high-intensity focused ultrasonic therapy unit having an ultrasonic transducer and a moving-locating mechanism with a supporting rod able to be extended in the gap of said MRI unit during therapy and connected to said ultrasonic transducer.

In a method and magnetic resonance (MR apparatus for reducing aliasing artifacts in the imaging for MR-monitored high intensity focused ultrasound HIFU therapy, a primary coil is used to receive the MR signals, and an additional coil is provided to receive interfering MR signals that form aliasing artifacts in the MR-monitored HIFU therapy imaging. The MR signals received by the primary coil and the interfering MR signals received by the additional coil are concurrently acquired. The interfering MR signals received by the additional coil are removed from the MR signals received by the primary coil. MR images are generated based on the MR signals with the interfering MR signals removed. Aliasing artifacts caused by the interfering MR signals thus are removed from the MR images without reducing the resolution of the scanned body parts in the MR images. In addition, the MR scanning time can be—maintained by using a proper phase oversampling technology in the concurrent signal acquisition.

The present invention relates to a method using transmitted and received signals for forming ultrasonic images for ultrasonic diagnosis, and to a high intensity focused ultrasonic therapeutic device performing same. The high intensity focused ultrasonic therapeutic device includes: a transmitting and receiving unit for transmitting ultrasonic waves for diagnosis to a subject and receiving an ultrasonic echo signal reflected from the subject to form a reception signal; an image processing unit for enabling a B-mode image to be formed on the basis of the reception signal, and outputting the B-mode image through a display unit therein; an ultrasonic wave generating unit for transmitting high intensity ultrasonic waves to a specific region of the subject; and a controller for controlling the transmitting and receiving unit and the ultrasonic wave generating unit to control the transmission periods of the ultrasonic waves for diagnosis and the high intensity ultrasonic waves on the basis of at least one or more pieces of information on the pulse repetition frequency (PRF) of the high intensity ultrasonic waves, the preset duty ratio, and the PRF disable signal generated by the ultrasonic wave generating unit.

The invention discloses a fluorocarbon emulsion auxiliary agent for increasing targeted area tissue energy deposition in HIFU treatment, which includes non-continuous phase constituted by filming material coating and continuous phase constituted by water-based medium, the non-continuous phase is dispersed in the continuous phase homogeneously, grain size of the non-continuous phase is 0.1-2um, the content of the film-forming material in the auxiliary agent is 0.1-100g / L, the core material is a liquid for generating liquid / gaseous phase change at 38-100 deg C, the content in the auxiliary agent is -200mg / L. The invention also discloses the use of the fluorocarbon emulsion auxiliary agent in HIFU treatment.