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Time extreme method of measuring the transmitting speed of ultrasonic wave in bone

A propagation velocity and ultrasonic technology, applied in the field of measurement, can solve problems such as the complexity of the process of solving unsolved problems, the complexity of the quaternary simultaneous equations, and the practicability of the measurement method, so as to improve the measurement accuracy and accuracy, and to achieve a simple structure. , the effect of easy operation

Active Publication Date: 2010-05-26
宏扬(河北)医疗器械有限公司
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  • Application Information

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Problems solved by technology

But the ensuing problem is how complicated it is to solve a four-element simultaneous equation system including three trigonometric functions, even if the author sets one of the variables V S Replaced by an empirical constant, but still can not solve the complexity of its problem-solving process, correspondingly, it also affects the practicability of this measurement method

Method used

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  • Time extreme method of measuring the transmitting speed of ultrasonic wave in bone
  • Time extreme method of measuring the transmitting speed of ultrasonic wave in bone
  • Time extreme method of measuring the transmitting speed of ultrasonic wave in bone

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Experimental program
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Embodiment Construction

[0028] Depend on figure 1 It can be seen that when the ultrasonic probe is parallel to the bone surface,

[0029] T 1 = A 1 C V S + CO 1 V B + O 1 B 1 V S

[0030] T 2 = A 1 C V S + CO 1 V B + L V B + O 2 ...

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Abstract

The time extreme method of measuring the transmitting speed of ultrasonic wave in bone belongs to the field of measurement technology, and solves the technological problem of providing a simplified method for measuring the sound transmission speed of sound in bone. The technological scheme includes setting ultrasonic emitter A1 and ultrasonic receivers B1 and B2 arranged in a probe casing to coverthe outer surface of the soft tissue outside one section of bone; connecting the ultrasonic emitter and ultrasonic receivers to the signal processing unit in the ultrasonic instrument; emitting ultrasonic wave to the bone with the ultrasonic emitter and receiving ultrasonic waves T1 and T2 with the ultrasonic receivers; shifting the measurement probe slightly and processing the measured T1 and T2values to obtain maximum T1 value and calculating the ultrasonic wave velocity on the surface of bone based on the formula VB=L / (T2-T1).

Description

technical field [0001] The invention relates to a method for measuring the propagation velocity of ultrasonic waves in bones, and belongs to the field of measurement technology. Background technique [0002] Skeleton is an important part of the human body, and it plays an indispensable role in the movement, growth and development of the human body. However, due to factors such as aging, external damage, and tumors, bone mass will change. Therefore, the determination of bone mineral density is an important monitoring index in clinical medicine. [0003] Ultrasound is a sound wave with a frequency above 20KHz that is beyond the hearing of the human ear. When ultrasound propagates in different media, it has different sound velocities due to the different physical properties of the media. In other words, it has different propagation speeds in normal bones and abnormal bones, so it can be distinguished from osteoporosis patients, fractures, etc. patients or normal population. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B8/00A61B5/00G01N29/07
Inventor 王杨柴雨力刘宏师磊胡宗华
Owner 宏扬(河北)医疗器械有限公司