Apparatus and method for optimization of ultrasound images

Patent metadata

Field	Value
Publication number	US-10905400-B2
Application number	US-201514628786-A
Country	US
Kind code	B2
Filing date	Feb 23, 2015
Priority date	Feb 23, 2015
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

An ultrasonic imaging apparatus comprises a volume data generating unit for generating volume data by processing echo signals obtained through ultrasonic transmission and reception to and from a three dimensional region including at least a portion of a body part. The ultrasonic imaging apparatus further comprises a rendering unit configured to generate a rendering image by performing a volume rendering process or a surface rendering process for the volume data based on a plurality of parameters, a display control unit for displaying image on a display unit, and a parameter adjustment unit for performing a detection of the at least a portion of the body part in the rendering image, and selecting or adjusting the value of at least one of the parameters based on a result of the detection, wherein said rendering unit is configured to generate a new rendering image based on the selected or adjusted parameter values from said parameter adjustment unit, and wherein said display control unit is configured to display said new rendering image on said display unit.

First claim

The invention claimed is:

1. An ultrasonic imaging apparatus, comprising:
processing circuitry configured to
generate volume data by processing echo signals obtained through ultrasonic transmission and reception to and from a three-dimensional region including at least a portion of a body part;
generate a plurality of two-dimensional rendering images by performing a rendering process on the volume data based on a plurality of parameters, each rendering image based on a different value of at least one of the plurality of parameters, the at least one parameter including a parameter related to a rendering orientation;
perform a detection of the at least a portion of the body part in each of the plurality of two-dimensional rendering images by applying an object detection algorithm and generating a respective detection score for each of the plurality of rendering images based on a result of the detection;
select at least one of the plurality of rendering images based on the detection scores;
adjust a value of at least one parameter of the plurality of parameters relating to the selected rendering image;
generate a new rendering image based on the adjusted value of the at least one parameter; and
display the new rendering image on a display.

2. The ultrasonic imaging apparatus according to claim 1 , wherein the body part is a body part of a fetus.

3. The ultrasonic imaging apparatus according to claim 2 , wherein the body part of the fetus comprises at least one of a face, a head, an eye, a nose, a mouth, an ear, a hand, a foot, and a genital region.

4. The ultrasonic imaging apparatus according to claim 1 , wherein the body part comprises at least one of an organ, an internal organ, a heart, a kidney, a uterus, and an ovary.

5. The ultrasonic imaging apparatus according to claim 1 , wherein the adjusting the value of at least one parameter of the plurality of parameters is based on image quality of a representation of the at least a portion of the body part in the selected rendering image.

6. The ultrasonic imaging apparatus according to claim 1 , wherein the adjusting the value of at least one parameter of the plurality of parameters comprises the processing circuitry or adjusting the value of the at least one parameter in order to optimize image quality of the representation of the detected at least a portion of the body part.

7. The ultrasonic imaging apparatus according to claim 6 , wherein the processing circuitry is further configured to evaluate the image quality in accordance with a predetermined method of measurement.

8. The ultrasonic imaging apparatus according to claim 1 , wherein the body part comprises a face of a fetus, wherein the detection by the processing circuitry comprises face detection, and wherein the detection score comprises a face detection score.

9. The ultrasonic imaging apparatus according to claim 1 , wherein the result of the detection by the processing circuitry comprises at least one candidate object location and at least one associated detection score.

10. The ultrasonic imaging apparatus according to claim 1 , wherein the object detection algorithm executed by the processing circuitry comprises at least one of a Viola-Jones object detection framework, a classifier, a cascade of boosted classifiers, a neural network, a genetic algorithm, and co-occurrence histograms of oriented gradients.

11. The ultrasonic imaging apparatus according to claim 1 , wherein the detection score is dependent on at least one of:
whether the at least a portion of the body part is visible;
whether the at least a portion of the body part is upright;
whether the at least a portion of the body part is frontal;
a location of the at least a portion of the body part;
a size of the at least a portion of the body part;
symmetry of the at least a portion of the body part; and
an orientation of the at least a portion of the body part.

12. The ultrasonic imaging apparatus according to claim 1 , wherein the plurality of parameters comprise at least one of an echo-processing control, a reconstruction parameter, a signal parameter, a volume parameter, and a filtering parameter.

13. The ultrasonic imaging apparatus according to claim 1 , wherein the plurality of parameters comprises at least one of a rendering orientation parameter, an illumination direction, an optical property, a lighting parameter, an isosurface value, a shading parameter, a position of a clip plane, an opacity, a scattering coefficient, a reflection coefficient, a parameter of an advanced rendering model, an ambient coefficient, a diffuse coefficient, a specular coefficient, and a depth of field.

14. The ultrasonic imaging apparatus according to claim 1 , wherein the echo signals are time-varying signals, and wherein the processing circuitry is further configured to generate the rendering images from volume data representative of signals received at a first time, and to generate the new rendering image from volume data representative of signals received at a second time.

15. The ultrasonic imaging apparatus according to claim 1 , wherein the detection score for each rendering image is representative of an image quality of the at least a portion of the body part in the rendering image.

16. The ultrasonic imaging apparatus according to claim 1 , wherein the detection score for each of the rendering images comprises values for a plurality of measures of image quality, and wherein the adjusting of the at least one parameter of the plurality of parameters is based on a combination of the values for the plurality of measures of image quality.

17. The ultrasonic imaging apparatus according to claim 16 , wherein the plurality of measures of image quality comprises at least one body part detection score and at least one aesthetic image quality score.

18. The ultrasonic imaging apparatus according to claim 1 , wherein the processing circuitry is further configured to generate the new rendering image by performing the rendering process on the volume data based on the adjusted value of the at least one parameter.

19. The ultrasonic imaging apparatus according to claim 1 , wherein the processing circuitry is further configured to generate the plurality of rendering images in response to user input and perform the detection of the at least one body part in the plurality of rendering images in response to the user input.

20. An ultrasonic imaging method, comprising:
generating volume data by processing echo signals obtained through ultrasonic transmission and reception to and from a three dimensional region including at least a portion of a body part;
generating a plurality of two-dimensional rendering images by performing a rendering process on the volume data based on a plurality of parameters, each rendering image based on a different value of at least one of the plurality of parameters, the at least one parameter including a parameter related to a rendering orientation;
performing a detection of the at least a portion of the body part in each two-dimensional rendering images by applying an object detection algorithm and generating a respective detection score for each of the plurality of rendering images based on a result of the detection;
selecting at least one of the plurality of rendering images based on the detection scores;
adjusting a value of at least one parameter of the plurality of parameters relating to the selected rendering image;
generating a new rendering image based on the adjusted value of the at least one parameter; and
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Assignees

• Toshiba Medical Sys Corp
• Canon Medical Systems Corp

Inventors

• Day Timothy

Classifications

• A61B8/0866

  involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby · CPC title

• A61B8/5269

  involving detection or reduction of artifacts · CPC title

• A61B8/463

  characterised by displaying multiple images or images and diagnostic data on one display · CPC title

• A61B8/467

  characterised by special input means · CPC title

• G06T2219/008

  Cut plane or projection plane definition · CPC title