A large focal area forming system of HIFU equipment and a focal area forming method thereof

Abstract

The invention discloses a system for forming a large focal region of HIFU equipment and a method for forming a focal region thereof. The system includes: a display module that displays an area to be treated, and establishes a model of the focal area according to the shape of the area to be treated; a path planning module , plan the scanning process of the focus area, perform partition focus, and form a focus path; the focus calculation module calculates the delay of each array element of the multi-element planar array transducer and the sound intensity reaching the focus area during each focus process, Controlling the emission and switching of the multi-element planar array transducer elements; the parameter configuration module, configuring the parameters required for the focusing process, and transmitting them to each element of the multi-element planar array transducer; the monitoring module, monitoring the focusing process in real time; The temperature module measures the temperature of the focus area; the result processing module processes and feeds back the scan result after the scan is completed, and feeds it back to the path planning module to determine the next focus area together with the display module. The invention can regulate the size and shape of the ultra-large focal area, has fast calculation, and can improve the treatment efficiency of the target area to be treated.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a system for forming a large focal region of HIFU equipment and a method for forming a focal region thereof. Background technique [0002] High Intensity Focused Ultrasound (HIFU) uses the tissue penetration and energy deposition of ultrasound to focus the ultrasound generated outside the body onto the diseased tissue (therapeutic target, such as tumor tissue) in the body. Effect, thermal effect and cavitation effect, make the tumor area reach a temperature higher than 65 degrees Celsius, perform thermal ablation of tumor tissue, cause coagulation necrosis of the tumor target tissue in the focal area, and the surrounding tissue is minimal or not damaged, achieving non-invasive tumor resection the goal of. [0003] The HIFU system mainly includes a transducer, a control part, a monitoring display part, etc. The control part controls the emission of the transducer, and d...

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Problems solved by technology

[0008] 2. The "big focal area" described in the existing patent is to set the shape of the thermal field according to the size and shape of the target tissue to form multiple focal spot areas. Multiple focal points are formed at one time, and the sound field distribution is calculated according to the pseudo-inverse algorithm. Multiple focal points synthesize a "large focal area" sound field mode, but the focus formation method is calculated using a pseudo-inverse algorithm, which is complex and slow in calculation speed, and cannot achieve real-time formation of a large focal area

[0009] 3. The existing HIFU equipment system does not involve the formation of a large focal area

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