Rib enhancement in radiographic images

Patent metadata

Field	Value
Publication number	US-9269165-B2
Application number	US-201414246455-A
Country	US
Kind code	B2
Filing date	Apr 7, 2014
Priority date	Jun 20, 2013
Publication date	Feb 23, 2016
Grant date	Feb 23, 2016

Abstract

A method for radiographic imaging obtains a radiographic image of a patient's chest and processes the obtained image to generate a default radiographic image and a bone-enhanced image. At least a portion of one or more ribs within the default radiographic image is detected and a rib mask generated according to the at least the detected portion of the one or more ribs. The rib mask is applied to the bone-enhanced image to define masked enhanced image content that includes the detected at least the portion of one or more ribs. A composite image that combines the masked enhanced image content with the default radiographic image is generated and displayed.

First claim

What is claimed is:

1. A method for radiographic imaging, executed at least in part on a computer, comprising:
processing a radiographic image of a patient's chest to generate a default radiographic image and a bone-enhanced image;
detecting at least a portion of one or more ribs within the default radiographic image;
generating a rib mask according to the at least the detected portion of the one or more ribs;
applying the rib mask to the bone-enhanced image to define masked enhanced image content that includes the detected at least the portion of one or more ribs;
generating a composite image that combines the masked enhanced image content with the default radiographic image; and
displaying, storing, or transmitting the composite image.

2. The method of claim 1 wherein generating the rib mask comprises performing rib edge segmentation.

3. The method of claim 1 wherein generating the rib mask comprises calculating a medial axis for at least one rib of the rib cage.

4. The method of claim 1 wherein generating the rib mask comprises selecting the rib mask from a library.

5. The method of claim 1 wherein the radiographic image is a dual-energy image.

6. The method of claim 1 wherein detecting the at least the detected portion of the one or more ribs further comprises applying an anatomy mask to define a region of interest in the default radiographic image that includes a portion of a rib cage.

7. The method of claim 6 wherein the anatomy mask is selected according to patient size.

8. The method of claim 1 further comprising evaluating the rib mask and repeating the step of generating the rib mask one or more times.

9. The method of claim 1 wherein generating the rib mask further comprises applying a growing algorithm.

10. A method for radiographic imaging, executed at least in part on a computer, comprising:
processing a radiographic image of a patient's chest to generate a default radiographic image;
applying an anatomy mask to define a region of interest in the default radiographic image that includes at least a portion of a rib cage;
detecting at least a portion of one or more ribs within the defined region of interest;
generating a rib mask according to the at least the detected portion of the one or more detected ribs;
generating an enhanced image from the obtained radiographic image;
applying the rib mask to the enhanced image to define masked enhanced image content that includes the at least the detected portion of the one or more detected ribs;
generating a composite image by combining the masked enhanced image content with the default radiographic image; and
displaying, storing, or transmitting the composite image.

11. The method of claim 10 wherein generating the rib mask comprises performing rib edge segmentation.

12. The method of claim 10 wherein generating the rib mask comprises obtaining a medial axis for at least one rib.

13. The method of claim 10 wherein generating the rib mask comprises selecting the rib mask from a library.

14. The method of claim 10 wherein the radiographic image is a dual-energy image.

15. A method for radiographic imaging, executed at least in part on a computer, comprising:
processing a radiographic image of a patient's chest to generate both a default radiographic image and a bone-enhanced image;
detecting at least a portion of the rib cage that is within the default radiographic image;
generating a rib mask according to one or more detected ribs in the detected at least the portion of the rib cage;
applying the rib mask to the bone-enhanced image to identify masked enhanced image content that includes the detected at least the portion of the rib cage;
generating a composite image that combines the masked enhanced image content with the default radiographic image; and
displaying, storing, or transmitting the composite image.

16. The method of claim 15 wherein generating a composite image comprises overlaying the masked enhanced image content onto the default radiographic image.

17. The method of claim 15 wherein detecting the at least a portion of the rib cage comprises applying an anatomy mask generated according to content of the radiographic image.

18. The method of claim 15 wherein detecting the at least a portion of the rib cage comprises applying an anatomy mask to define a region of interest in the default radiographic image that includes a portion of the rib cage.

Assignees

• Carestream Health Inc

Inventors

• La Pietra Lynn M
• Huo Zhimin
• Couwenhoven Mary E

Classifications

• G06T2207/30064

  Lung nodule · CPC title

• G06T11/00 Primary

  Two-dimensional [2D] image generation · CPC title

• G06T2207/10016

  Video; Image sequence · CPC title

• G06T2207/30008

  Bone · CPC title

• G06T2207/30012

  Spine; Backbone · CPC title