Methods for the compensation of imaging technique in the processing of radiographic images
View Patent ↗The present invention relates to methods and devices for analyzing x-ray images. In particular, devices, methods and algorithms are provided that allow for the accurate and reliable evaluation of bone structure and macro-anatomical parameters from x-ray images.
1. A method to derive information regarding one or more bone parameters from an image comprising:
(a) obtaining image data of bone from a subject;
(b) defining a region of interest from the image data;
(c) defining within the region of interest at least first and second windows, wherein the first and second windows overlap;
(d) analyzing information in the first window to determine at least a first value for a parameter, the parameter selected from the group consisting of bone microarchitecture, bone macroanatomy, biomechanical parameters and combinations thereof;
(e) analyzing information in the second window to determine at least a second value for the parameter; and
(f) generating a set of data at least in part from the first and second values.
2. The method of claim 1 , wherein the information in the first window is further analyzed to determine a third value of a second parameter; wherein the information in the second window is further analyzed to determine a fourth value of the second parameter, and wherein the set of data is generated based at least in part on the first, second, third and fourth values.
3. The method of claim 1 , further comprising generating a field of sampling points of the image, the sampling points being distributed at regular intervals in the image, and the first window being located at a first sampling point of the field of sampling points, and the second window being located at a second sampling point of the field of sampling points.
4. The method of claim 1 , further comprising generating a field of sampling points of the image, the sampling points being distributed at irregular intervals in the image, and the first window being located at a first sampling point of the field of sampling points, and the second window being located at a second sampling point of the field of sampling points.
5. The method of claim 1 , wherein the parameter is bone micro-architecture.
6. The method of claim 1 , wherein the parameter is bone macro-anatomy.
7. The method of claim 1 , wherein the image is two-dimensional.
8. The method of claim 7 , wherein image is an x-ray image.
9. The method of claim 1 , wherein the image is three-dimensional.
10. The method of claim 1 , wherein the image is an electronic image.
11. The method of claim 1 , wherein the subject is an osteoporosis subject.
12. The method of claim 1 , further comprising
creating a parameter map based at least in part on the values associated with the parameter.
13. The method of claim 12 , further comprising:
(a) generating multiple parameter maps;
(b) generating a composite parameter map from the multiple parameters maps of step (a); and
(c) analyzing the composite parameter map.
14. The method of claim 12 , further comprising:
analyzing the parameter map, wherein the analysis is watershed segmentation analysis or Markov random field analysis.
15. The method of claim 12 , further comprising:
(a) generating a finite element model from the parameter map; and
(b) applying simulated force vectors to the finite element model.
16. The method of claim 13 , further comprising:
(a) predicting a fracture path using the composite parameter map; and
(b) evaluating one or more selected bone parameters along the predicted fracture path.
17. The method of claim 14 , further comprising:
(a) predicting a fracture path using the analyzed parameter map; and
(b) evaluating one or more selected bone parameters along the predicted fracture path.
18. The method of claim 1 , further comprising
diagnosing a bone disease based on the generated set of data and
selecting and administering a suitable treatment to said subject based on said diagnosis.