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Cup type microwave thermoacoustic mammary gland imaging detection device

A detection device and breast imaging technology, which is applied in ultrasonic/acoustic/infrasonic diagnosis, acoustic diagnosis, infrasonic diagnosis, etc., can solve problems affecting time resolution, multi-time, image blurring, etc., and achieve improved time resolution and microwave energy Uniform, low-cost effect

Active Publication Date: 2012-06-20
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The unit transducer needs to use a mechanical rotation to collect signals to reconstruct a complete image, so it takes a lot of time. If it is used to detect breast cancer, the breast to be inspected will move relative to the detector, which will cause image blur and affect Time resolution, so finding an ultrasonic transducer that can detect quickly is a top priority

Method used

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  • Cup type microwave thermoacoustic mammary gland imaging detection device
  • Cup type microwave thermoacoustic mammary gland imaging detection device
  • Cup type microwave thermoacoustic mammary gland imaging detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A "body cup" type microwave thermoacoustic breast imaging detection device, such as figure 1 As shown, it includes a pulsed microwave generator 1-1, a high-power helical antenna 1-2, a "body cup" detection device 1-3, a detection coupling platform 1-4, a multi-element ring array ultrasonic detector 2-3, a microwave anti- Leakage equipment 1-5 and data acquisition-image reconstruction device 1-6; pulsed microwave generator 1-1, high-power helical antenna 1-2, "body cup" detection device 1-3, detection coupling platform 1-4, multiple The annular array ultrasonic detector 2-3 and the data acquisition-image reconstruction device 1-6 are located in the microwave leak-proof device 1-5 to prevent microwave leakage; the detection coupling platform 1-4 is used to carry the subject; the pulsed microwave generator Device 1-1, high-power helical antenna 1-2, "body cup" detection device 1-3 and data acquisition-image reconstruction device 1-6 are connected in sequence; multi-element...

Embodiment 2

[0050] Using the device of Example 1 to realize thermoacoustic imaging of the object to be measured comprises the following steps:

[0051] (1) Pig fat is used as low water content substance (simulated breast tissue), and gelatin block containing 90% (mass fraction) water and 10% (mass fraction) kerosene is used as high water content substance (simulated tumor) with mass fraction. Made into a breast shape, the maximum diameter of low water content material is 50mm, and the maximum diameter of high water content material is 5mm, fixed on the top of polystyrene (ps) buffer pad 2-1.

[0052] (2) The pulsed microwave generator 1-1 emits microwaves with a short pulse width of 500 ns, which are uniformly irradiated to the bottom of the sample through the high-power helical antenna 4-1. The distance between the end of the antenna and the bottom of the sample is 15cm, and the excitation produces a thermoacoustic signal.

[0053] (3) The thermoacoustic signal is received by the multi-...

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Abstract

The invention belongs to the technical field of thermoacoustic imaging, and discloses a 'cup' type microwave thermoacoustic mammary gland imaging detection device. The detection device consists of a pulse microwave generator, a transmitting antenna, a 'cup' detection device, a detection coupling platform, an ultrasonic transducer, microwave leakage-proof equipment and a data acquisition-image reconstruction device, wherein the 'cup' detection device is an uncovered closed container which consists of a metal 'cup' shell and a non-metal body bottom plate; a microwave absorbing material is covered on the integral cross section of the 'cup' detection device and is recessed inward to form a shape which is matched with shapes of human breasts; a polystyrene buffer cushion is covered on the microwave absorbing material seamlessly, and a hole is reserved in the center of the polystyrene buffer cushion; a detector lifting power device is arranged at the bottom of the closed container; and a detector lifting sliding groove is formed above the power device; and a multielement annular array ultrasound detector is arranged on the sliding groove. The resolution ratio of the detection device is 0.5 millimeter, so the detection device can discriminate millimeter-order microscopic tumors; and the image contrast is high, so the detection device can be popularized clinically.

Description

technical field [0001] The invention belongs to the technical field of thermoacoustic imaging, and in particular relates to a device for detecting mammary glands, in particular to a "body cup" type microwave thermoacoustic nondestructive imaging detection device for mammary glands. Background technique [0002] Microwave thermoacoustic imaging is a new type of non-destructive testing technology, which has attracted more and more attention because of its advantages of high contrast and high resolution, safety and non-destructive, and high imaging depth. When a substance is irradiated with pulsed microwaves, the substance absorbs microwave energy to cause an instantaneous temperature rise. If the pulse width of the microwave is relatively narrow, the absorbed energy cannot undergo thermal diffusion within the duration of the microwave pulse. At this time, it can be regarded as adiabatic expansion. , heat energy is converted into mechanical energy and radiated in the form of ul...

Claims

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Application Information

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IPC IPC(8): A61B8/00
Inventor 邢达计钟杨思华
Owner SOUTH CHINA NORMAL UNIVERSITY
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