Focused ultrasound measuring machine

Abstract

To solve the issue that an operator has no choice but to depend on an operation screen of focused ultrasound and the depth of a focus point (the distance from the surface of a skin to a focus point) displayed on a cartridge since an operator does not have a measuring device of HIFU and to provide a correct measured value suitable for a treatment to avoid occurence of accidents.SOLUTION: A focused ultrasound is radiated into water and the density of the water is measured. The method for measuring the density of water includes causing a laser beam to penetrate an ultrasonic region radiated from an HIHU cartridge. The laser beam and an optical wave length measuring unit are arranged coaxially and the change of the wavelength of the laser beam is measured. A distribution drawing of the density of water according to the change of the wavelength is automatically created. A distribution drawing of the energy density of ultrasonic waves is automatically created from the water density distribution and is imaged.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention can image the energy distribution of ultrasound output from a High Intensity Focused Ultrasound (HIFU) generator (hereinafter referred to as HIFU) used in cosmetic medicine. The degree of focus of the output ultrasound can be evaluated by imaging. To image ultrasound, a laser beam is passed through the ultrasound output into water, and the change in wavelength due to the change in density of the water after transmission is measured. The density of water changes as ultrasound propagates, and this physical property is applied. [Background technology]

[0002] HIFU is often advertised on the websites of beauty clinics as being able to eliminate sagging skin. Since HIFU can eliminate sagging skin on the face and increase elasticity, the number of people undergoing this treatment is increasing. However, skin troubles and burns caused by HIFU have also been reported frequently. The main cause of these accidents is inappropriate output and focal point position of the focused ultrasound. HIFU is an ultrasound technology originally developed for cancer treatment. The mechanism of HIFU used in aesthetic medicine is to pinpoint the thermal energy of ultrasound (60-70℃) into the inside of the skin in a pinpoint manner, and since it can only irradiate the targeted skin tissue, it does not damage other tissues. By changing cartridges with different focal point depths, the focal point can be changed from the thin layer to the deep layer of the skin. Pinpoint irradiation of the thin layer of the skin can eliminate the cause of fine wrinkles around the eyes. Pinpoint irradiation of the deep layer of the skin can eliminate the cause of sagging skin. Summary of the Invention [Problem to be solved by the invention]

[0003] The problem to be solved is that since the surgeon does not have a measuring device, he or she must rely on the focal depth (the distance from the skin surface to the focal point) displayed on the focused ultrasound operation screen and cartridge. [Means for solving the problem]

[0004] This invention makes it possible to obtain correct measurement values ​​suitable for treatment and eliminate accidents. The measurement procedure is as follows:

[0005] The laser beam and wavelength measuring device are arranged coaxially and moved up and down while rotating horizontally at a constant speed.

[0006] A laser beam is passed through the ultrasound area irradiated from the HIFU cartridge.

[0007] The change in wavelength of the transmitted laser light is measured at each coordinate set in the water.

[0008] A distribution map of water density according to wavelength change is automatically created.

[0009] A distribution map of ultrasonic energy density is automatically created from the density distribution of water. Effect of the Invention

[0010] The measuring device of the present invention can evaluate the focusing degree of HIFU. The surgeon can observe the ultrasound energy and focal depth in an image before the treatment, and can confirm whether the HIFU is outputting ultrasound suitable for the treatment. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is an explanatory diagram showing a method for measuring focused ultrasound output from a HIFU. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Focused ultrasound is emitted into the water in a tank, and a laser beam is passed through the focused ultrasound. The change in the wavelength of light is recorded, and the energy distribution of the focused ultrasound is visualized in three dimensions. The laser beam axis and the light receiving part are aligned coaxially around the focused ultrasonic wave, and the laser beam is moved steadily by the rotating and lifting device. The device rotates horizontally at a constant speed and moves up and down to record the change in wavelength of light due to the change in water density. The position in the water is converted into a coordinate, and the ultrasonic wave output is calculated based on the rate of change in the wavelength of light for each coordinate. The energy distribution is visualized in three dimensions. [Industrial Applicability]

[0013] The measuring device of the present invention can evaluate whether the focused ultrasound emitted by the HIFU used in beauty clinics, etc. has therapeutic effects and safety. The measuring device of the present invention is also useful for HIFU manufacturers and sales companies to inspect the performance of HIFU. [Explanation of symbols]

[0014] 1. Focused Ultrasound Generator 2. Focused ultrasound of the measurement target 3 Laser Oscillator 4 Optical wavelength measuring device 5. Optical Wavelength Data Processing Device 6 Image creation processing device 7 Monitor 8 Rotating lifting device 9. Laser Light 10 The laser beam and the receiver move up and down while rotating horizontally on the same axis. 11. Aquarium

Claims

[Claim 1] The ultrasonic waves emitted into the water are passed through a laser beam, and the change in wavelength of the light after passing through is recorded. The energy distribution of ultrasound is visualized in three dimensions. In order to image the object, the laser optical axis and the light receiving part are aligned coaxially with the output ultrasonic wave as the center. The device rotates horizontally at a constant speed while moving up and down, and records the change in wavelength of light due to the change in water density. Record. The position in the water is converted into a coordinate, and the ultrasonic output is calculated based on the rate of change in the wavelength of light for each coordinate. The wave energy distribution is visualized in three dimensions.

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