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Low-frequency transcranial dedicated ultrasonic transducer and application thereof

An ultrasonic transducer, transcranial technology, applied in applications, ultrasonic/sonic/infrasonic diagnosis, ultrasonic/sonic/infrasonic Permian technology, etc., can solve problems such as ultrasonic attenuation, improve resolution and improve image quality , good penetration effect

Inactive Publication Date: 2018-06-19
XI AN JIAOTONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although the temporal bone is the thinnest part of the skull, it still has a strong attenuation effect on ultrasonic waves

Method used

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  • Low-frequency transcranial dedicated ultrasonic transducer and application thereof
  • Low-frequency transcranial dedicated ultrasonic transducer and application thereof
  • Low-frequency transcranial dedicated ultrasonic transducer and application thereof

Examples

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experiment example

[0037] see figure 1 , in the example of the first type of low-frequency ultrasonic linear array transducer, the number of array elements is 128, the center spacing of array elements is 0.2mm, the length of array elements is 10mm, the center frequency is 2MHz, and the bandwidth is 80%.

[0038] see figure 2 , in the example of the second type of low-frequency ultrasonic linear array transducer, the number of array elements is 128, the center distance between array elements is 0.3mm, the length of array elements is 10mm, the center frequency is 2MHz, and the bandwidth is 80%.

[0039] see image 3 , In the example of a low-frequency ultrasonic 1.5D linear array transducer, the number of array elements is 256, arranged according to 64 (principal axis) × 4 (secondary axis), the center-to-center spacing of the main axis of the array elements is 0.3mm, the center-to-center spacing of the secondary axes is 5mm, and the center frequency is 2MHz , bandwidth 60%.

[0040] see Figu...

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Abstract

The invention provides a low-frequency transcranial dedicated ultrasonic transducer and application thereof. The provided ultrasonic transducer is a 1.5D linear array transducer or area array transducer with a center frequency between 1.6MHz and 2.3MHz and a liner array with the number of array elements of 128-256, the size of the transducer can better fit a temporal bone for imaging, according toimaging experiments of the ultrasonic transducer, the penetrability is better, the sound pressure after passing through a skull is stronger, the imaging effect is better, and the imaging definition can be better improved so that the transducer can be used as the transcranial dedicated ultrasonic transducer. By means of the low-frequency transcranial dedicated ultrasonic transducer, B-mode imagingcan be conducted by the low-frequency transcranial dedicated ultrasonic transducer, imaging in manners of plane wave, linear frequency modulation, broad focus and the like can also be conducted, andthe low-frequency transcranial dedicated ultrasonic transducer can be applied to transcranial B-mode imaging, transcranial Doppler imaging and transcranial pulse-inversion imaging to improve imaging quality.

Description

technical field [0001] The invention belongs to the technical field of ultrasonic detection and ultrasonic imaging, and in particular relates to the design and application of a low-frequency ultrasonic transducer array. Background technique [0002] Ultrasound imaging uses ultrasound beams to scan the human body, and obtains images of internal organs by receiving and processing reflected signals. Although ultrasound imaging can image and observe many human tissues and organs, the imaging of intracranial tissues and blood vessels is still in the development stage. At present, ultrasonic technology mainly adopts transcranial Doppler technology for intracranial monitoring. The development of intracranial angiographic imaging technology provides more accurate methods for intracranial monitoring and disease detection. Vascular imaging of intracranial vessels overcomes many of the shortcomings of transcranial Doppler detection. [0003] Ultrasonic waves are significantly attenu...

Claims

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Application Information

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IPC IPC(8): A61B8/00A61B8/08
CPCA61B8/4494A61B8/0816A61B8/4483
Inventor 万明习柏晨张馨予纪美伶
Owner XI AN JIAOTONG UNIV
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