Ultrasound system and method for planning ablation

Patent metadata

Field	Value
Publication number	US-2020281662-A1
Application number	US-202016879732-A
Country	US
Kind code	A1
Filing date	May 20, 2020
Priority date	Nov 21, 2017
Publication date	Sep 10, 2020
Grant date	—

Abstract

An ultrasound system and method for planning ablation are provided. The method includes: obtaining spatial orientation information of a positioning device by means of the positioning device fixed on an ultrasound probe; and associating and recording the spatial orientation information and the ultrasound image obtained by means of real-time scanning by the ultrasound probe so as to performing the ablation planning, thereby improving the planning accuracy.

First claim

1 . An ultrasound system for planning ablation, comprising:
an ultrasound probe; a transmitting circuit which excites the ultrasound probe to transmit an ultrasound beam to an examined object containing a target tissue; a receiving circuit which receives echoes of the ultrasound beam to obtain an ultrasound echo signal; a navigation system comprising a positioning device fixed on the ultrasound probe; a display screen; a memory which stores a computer program; and a processor which, when executing the program: obtains a real-time ultrasound image data of the examined object according to the ultrasound echo signal; obtains a spatial orientation information of the positioning device through the navigation system; obtains a three-dimensional model data of the target tissue; registers the three-dimensional model data with the real-time ultrasound image data according to the spatial orientation information; displays the real-time ultrasound image data and a view data obtained according to the three-dimensional model data registered with the real-time ultrasound image on the display screen in a fusion manner to obtain a fusion image; and determines a planned ablation path according to the fusion image.

2 . The system of claim 1 , wherein the processor further displays an ablation device mark and/or the planned ablation path on the display screen.

3 . The system of claim 2 , wherein the processor displays the ablation device mark and/or the planned ablation path on the display screen by:
displaying a probe icon representing the ultrasound probe on the display screen, wherein a display position of the probe icon changes with a change of the spatial orientation information.

4 . The system of claim 1 , wherein the planned ablation path comprises at least one of an ablation guide direction, an ablation path depth and a predicted ablation area.

5 . The system of claim 1 , wherein the processor determines the planned ablation path according to the fusion image by:
displaying an ablation device mark at a first position in the real-time ultrasound image according to a relative position of an ablation device with respect to the ultrasound probe; and obtaining an adjustment instruction to the ablation device mark; changing the position of the ablation device mark in the real-time ultrasound image to a second position according to the adjustment instruction; and obtaining the planned ablation path according to the changed ablation device mark.

6 . The system of claim 1 , wherein, before determining the planned ablation path on the real-time ultrasound image, the processor further:
obtains an ablation parameter of an ablation device, wherein the ablation parameter comprises at least one of an ablation power, a predicted working time and a number of ablation devices; and obtains a predicted ablation area according to the ablation parameter, and displays the predicted ablation area on the real-time ultrasound image, wherein the displayed predicted ablation area changes with a change of a position of an ablation device mark.

7 . The system of claim 1 , wherein displaying the real-time ultrasound image data and the view data comprises at least one of:
displaying a three-dimensional view data and a two-dimensional real-time ultrasound image of the target tissue; displaying a three-dimensional view data and a three-dimensional real-time ultrasound image of the target tissue; or displaying a two-dimensional view data and the real-time ultrasound image of the target tissue.

8 . The system of claim 2 , wherein the processor displays the ablation device mark and/or the planned ablation path on the display screen by at least one of:
displaying a predicted ablation area following the ablation device mark on the real-time ultrasound image; calculating an overlap relationship between the view data and a predicted ablation area and outputting the calculation result of the overlap relationship; drawing a probe icon and marking a predicted ablation area at a corresponding position in the real-time ultrasound image; or marking an overlap between a first predicted ablation area and a second predicted ablation area according to the planned ablation path.

9 . An ultrasound imaging method for planning ablation, comprising:
obtain a real-time ultrasound image of an examined object containing a target tissue through an ultrasound probe; obtaining a spatial orientation information of a positioning device fixed on the ultrasound probe; obtaining a three-dimensional model data of the target tissue; registering the three-dimensional model data with the real-time ultrasound image data according to the spatial orientation information; displaying the real-time ultrasound images and a view data obtained according to the three-dimensional model data registered with the real-time ultrasound image in a fusion manner to obtain a fusion image; and determining a planned ablation path according to the fusion image.

10 . The method of claim 9 , further comprising displaying an ablation device mark and/or the planned ablation path.

11 . The method of claim 10 , wherein displaying the ablation device mark and/or the planned ablation path comprises:
displaying a probe icon representing the ultrasound probe, wherein a display position of the probe icon changes with a change of the spatial orientation information.

12 . The method of claim 9 , wherein the planned ablation path comprises at least one of an ablation guide direction, an ablation path depth and a predicted ablation area.

13 . The method of claim 9 , wherein determining the planned ablation path according to the fusion image comprises:
displaying an ablation device mark at a first position in the real-time ultrasound image according to a relative position of an ablation device with respect to the ultrasound probe; obtaining an adjustment instruction to the ablation device mark; changing the position of the ablation device marker in the real-time ultrasound image to a second position according to the adjustment instruction; and obtaining the planned ablation path according to the changed ablation device mark.

14 . The method of claim 9 , before determining the planned ablation path according to the fusion image, further comprising:
obtaining an ablation parameter of an ablation device, wherein the ablation parameter comprises at least one of an ablation power, a predicted working time and a number of ablation devices; and obtaining a predicted ablation area according to the ablation parameter, and displaying the predicted ablation area on the real-time ultrasound image, wherein the displayed predicted ablation area changes with a change of a position of an ablation device mark.

15 . The method of claim 9 , wherein displaying the real-time ultrasound image data and the view data comprises at least one of:
displaying a three-dimensional view data and a two-dimensional real-time ultrasound image of the target tissue; displaying a three-dimensional view data and a three-dimensional real-time ultrasound image of the target tissue; or displaying a two-dimensional view data and the real-time ultrasound image of the target tissue.

16 . The method of claim 10 , displaying the ablation device mark and/or the planned ablation path comprises at least one of:
displaying a predicted ablation area following the ablation device mark on the real-time ultrasound image; calculating an overlap relationship between the view data and a predicted ablation area and outputting the calculation result of the overlap relationship; drawing a

Assignees

• Shenzhen Mindray Biomedical Electronics Co Ltd
• Beijing Shen Mindray Medical Electronics Tech Research Institute Co Ltd

Inventors

• Cong Longfei
• Zhang Yanhui
• Sang Maodong

Classifications

• A61B8/085

  for locating body or organic structures, e.g. tumours, calculi, blood vessels, nodules · CPC title

• A61B8/481

  involving the use of contrast agents, e.g. microbubbles introduced into the bloodstream · CPC title

• A61B8/4254

  using sensors mounted on the probe · CPC title

• A61B8/0841

  for locating instruments · CPC title

• A61B8/5246

  combining images from the same or different imaging techniques, e.g. color Doppler and B-mode · CPC title