Magnetic resonance elastography active adsorption type bridging exciter

A technology of magnetic resonance elasticity and excitation device, which is applied in the directions of using vibration for diagnosis, medical science, sensors, etc., can solve the problems of low conversion efficiency of elastic waves, and achieve the effects of light weight, convenient operation and improved conversion efficiency.

Inactive Publication Date: 2014-08-27
HEFEI UNIV OF TECH
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Problems solved by technology

[0011] The purpose of the present invention is to provide an active adsorption bridging excitation device for magnetic resonance elastography, which aims...

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  • Magnetic resonance elastography active adsorption type bridging exciter

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with the accompanying drawings.

[0032] As shown in the attached figure, the magnetic resonance elastography active adsorption bridging device mainly includes two parts: a vibration generator and an active adsorption bridging mechanism.

[0033] The vibration generator includes a miniature vibrating table, a sealed air chamber at the vibrating end and a "T"-shaped push rod. The edge of the upper circular surface is sealed and connected with the thin film 3 at the supporting end of the elastic structure and the airtight air chamber at the vibrating end; thus, the elastic wave can be transmitted by virtue of the elasticity of the thin film.

[0034] The active adsorption bridging mechanism includes a closed air chamber 6 at the bridge end, a concave adsorption surface 11 and an air extraction device 9. The airtight air chamber 6 at the bridge end communicates with the airtight air chamber 4 at the vibra...

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Abstract

The invention discloses a magnetic resonance elastography active adsorption type bridging exciter which is characterized by comprising a vibration generator and an active adsorption type bridging mechanism, the vibration generator comprises a minitype vibrating table, a vibrating end airtight air chamber and a T-shaped push rod, and the active adsorption type bridging mechanism comprises a bridging end airtight air chamber, a concave adsorption surface and an air extractor. The bridging exciter with the active adsorption function is capable of achieving bidirectional exciting, defects of unidirectional exciting are overcome, phase and frequency consistency between external source driving and tissue strain is achieved, elastic wave driving and tissue strain are coordinated, and elastic wave conversion efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance elastography, is an external excitation technology for magnetic resonance elastography, and in particular provides an active adsorption bridge excitation device. Background technique [0002] Elasticity is an important mechanical property in the physical properties of human tissue. The elastic modulus of normal tissues is not the same. Compared with pathological tissues, the elasticity of normal tissues is also quite different. The size and change of tissue elasticity directly reflect its composition and structure, and are closely related to its biological characteristics and physiological pathology. [0003] Traditional imaging methods, such as ultrasound, CT, and traditional magnetic resonance imaging cannot provide tissue biomechanical properties, while magnetic resonance elastography, as a new non-invasive imaging method, can visually display and quantify the elasticity of internal ...

Claims

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Application Information

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IPC IPC(8): A61B5/055
CPCA61B5/0051
Inventor 李炳南周迅向馗付振峰汪萌钟凯
Owner HEFEI UNIV OF TECH
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