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An imaging device with image acquisition rate optimization

An image and data collection technology, applied in ultrasonic/sonic/infrasound equipment control, sound wave re-radiation, utilization of re-radiation, etc. rate effect

Active Publication Date: 2013-11-20
声科影像有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This reduction has the effect of reducing image quality in terms of resolution and contrast

Method used

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  • An imaging device with image acquisition rate optimization
  • An imaging device with image acquisition rate optimization
  • An imaging device with image acquisition rate optimization

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Embodiment Construction

[0113] Figure 6 The output of the first step of the method, which acquires an imaged region ZI of the medium M to be imaged, from which a region of interest D1 can be determined is shown diagrammatically.

[0114] When imaging moving structures is problematic, this region of interest D1 can be determined automatically by analyzing images or successive images in a device using the method of the invention.

[0115] The area of ​​interest D1 can also be determined manually by the operator selecting an area in the image area of ​​the next displayed image area.

[0116] Accordingly, the method of the invention comprises the step of determining an interactive sensor correlation matrix corresponding to the regions of interest and the regions of unwanted.

[0117] To this end, the method of the invention considers an array of N-dimensional acoustic sensors T1 to TN (eg, echographic probes), and a region of interest D, the region in space to be imaged.

[0118] X(t)=[x1(t),x 2 (t),...

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Abstract

The invention relates to a method of acquiring high-resolution ultrasound images of a medium (M) using an array of N transducers (T1 to TN) using successive transmission matrices, characterized in that it comprises the steps of defining an area of interest (D1) in a preliminary image (ZI); determining inter-transducer correlation matrices corresponding to the area of interest (D1) and to the unwanted area; determining a characteristic matrix (MC) of the area of interest (D1) resulting from the product of the inverse of the inter-transducer correlation matrix of the unwanted area by the inter-transducer correlation matrix of the area of interest (D1); calculating the eigenvectors and values of the characteristic matrix (MC) of the area of interest (D1) to define a transmission matrix; adjusting a trade-off between the image acquisition rate and image quality in the area of interest (D1) in order to define a number K of eigenvectors for firing; multiplying a reception matrix constituted of the acquired signals completed by data set to zero corresponding to the firings not effected by the inverse of the transmission matrix to obtain a complete data set; reconstructing the high-resolution image corresponding to the area of interest (D1) as in synthetic aperture echographic imaging methods.

Description

technical field [0001] The field of the invention is echographic imaging. The present invention relates to methods and devices for imaging and treating pathologies of human organs. [0002] More specifically, the present invention relates to imaging methods and devices with high spatial and temporal resolution based on the use of synthesis methods. Temporal resolution increases as the number of firings necessary to reconstruct the image decreases. The image acquisition rate (ie, the number of images per unit of time) is directly related to this temporal resolution. Background technique [0003] Standard echographic imaging systems use echoes backscattered by the medium to be probed (typically biological tissue) to analyze changes in the acoustic impedance properties of the biological structure and thereby reconstruct an image of the medium. [0004] Ultrasound images are typically obtained by generating and transmitting beams focused at a given focal length and emitted in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S15/89
CPCA61B8/4483A61B8/145A61B8/54A61B8/5207A61B8/469G01S15/8977G01S15/8959G01S15/8997A61B8/485A61B8/00G01S15/89
Inventor J-M·尼古拉斯L·科普F·莫斯卡C·科恩-巴克里C·弗拉西尼
Owner 声科影像有限公司
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