Operation route searching apparatus and searching method thereof

• US 6,526,162 B2
• Filed: 09/22/1998
• Issued: 02/25/2003
• Est. Priority Date: 09/26/1997
• Status: Expired due to Fees

• Current Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Original Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Inventors: Saito, Akito, Shibasaki, Takao, Matsuzaki, Hiroshi, Asano, Takeo
• Primary Examiner(s): Mehta, Bhavesh
• Assistant Examiner(s): Tabatabai, Abolfazl
• Application Number:
  US09/158,335
• Publication Number:
  US 20010040991A1
• Time in Patent Office: 1,617 Days
• Field of Search: 382/128, 382/129, 382/130, 382/131, 382/132, 382/288, 600/300
• US Class Current: 382/128
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61B 90/10 for stereotaxic surgery, e.g. frame-based stereotaxis
• CPC Class Codes: A61B 90/37 Surgical systems with images on a monitor during operation
• CPC Class Codes: G06T 2207/30016 Brain
• CPC Class Codes: G06T 7/60 Analysis of geometric attributes

Abstract

The present invention writes the obtained two-dimensional image data of a body including a diseased portion in a computer or the like, and displays a three-dimensional image of the body including the diseased portion and the related data in the same monitor. The diseased portion data is then converted into a three-dimensional construction with use of a three-dimensional construction reconstructing section. The geometrical center of the three-dimensional constructed image is calculated by a geometrical center calculation section, and a plurality of linear lines or one linear line having the shortest distance directing from the geometrical center to the outside of the body is then calculated. The calculated line/lines is/are displayed to be overlapped on an image of the body including the diseased portion. In this manner, the present invention provides a stereotaxy operation route searching apparatus for showing a guideline of a low-invasive operation strategy to an operator, and the searching method.

Claims

1. An operation route searching apparatus comprising:

an input section for inputting a plurality of images obtained by tomography of a body including a diseased portion;

a specifying section for allowing an operator to specify the diseased portion included in the images;

a conversion section for converting the specified diseased portion into a three-dimensional structure;

a geometrical center calculation section for calculating a geometrical center point of the three-dimensional structure as a center of the diseased portion; and

a linear line calculation section for calculating a linear line as an operation route directed to the geometrical center point from outside of the body.

2. An operation route searching apparatus according to claim 1, wherein the linear line calculation section calculates a line having a shortest distance between the geometrical center point and a surface of the body from among other possible lines.

3. An operation route searching apparatus according to claim 1, wherein the specifying section allows the operator to specify the diseased portion in accordance with attributes of tissue regions.

4. An operation route searching apparatus according to claim 1, further comprising:

a storing section for storing data indicating a predetermined tissue region; and

an interference calculating section for calculating an interference between the linear line and the predetermined tissue region based on the data from the storing section.

5. An operation route searching apparatus according to claim 4, further comprising:

a constraint condition adding section for defining a constraint condition used in the interference calculation.

6. An operation route searching apparatus according to claim 1, wherein the linear line calculation section calculates a plurality of linear lines.

7. A operation route searching apparatus according to claim 6, further comprising:

a solid angle calculation section for calculating a solid angle formed by at least two of the linear lines.

8. An operation route searching apparatus according to claim 6, further comprising:

a cone calculation section for calculating a cone formed by at least three of the linear lines.

9. An operation route searching apparatus according to claim 6, further comprising:

an area calculating section for calculating a size of a polygon formed by connecting crossing points of the linear lines and a surface of the body.

10. An operation route searching apparatus comprising:

an input section for inputting a plurality of images obtained by tomography of a body including a diseased portion;

a specifying section for allowing an operator to specify the diseased portion included in the images;

a conversion section for converting the specified diseased portion into a three-dimensional structure; and

a linear line calculation section for calculating a linear line as an operation route directed to a designated point within the three-dimensional structure from outside of the body.

11. An operation route searching apparatus according to claim 10, wherein the linear line calculation section calculates a line having a shortest distance between the designated point and a surface of the body from among other possible lines.

12. An operation route searching apparatus according to claim 10, wherein the specifying section allows the operator to specify the diseased portion in accordance with attributes of tissue regions.

13. An operation route searching apparatus according to claim 10, further comprising:

a storing section for storing data indicating a predetermined tissue region; and

an interference calculating section for calculating an interference between the linear line and the predetermined tissue region based on the data from the storing section.

14. An operation route searching method comprising:

inputting a plurality of images obtained by tomography of a body including a diseased portion;

enabling an operator to specify the diseased portion included in the images;

converting the specified diseased portion into a three-dimensional structure;

calculating a geometrical center point of the three-dimensional structure as a center of said diseased portion; and

calculating a linear line as an operation route directed to the geometrical center point from outside of the body.

15. An operation route searching method according to claim 14, wherein the calculated linear line is a line having a shortest distance between the geometrical center point and a surface of the body from among other possible lines.

16. An operation route searching method according to claim 14, wherein the operator is enabled to specify the diseased portion in accordance with attributes of tissue regions.

17. An operation route searching method according to claim 14, further comprising:

storing data indicating a predetermined tissue region; and

calculating an interference between the linear line and the predetermined tissue region based on the stored data.

18. An operation route searching method according to claim 17, further comprising:

defining a constraint condition used in the interference calculation.

19. An operation route searching method according to claim 14, wherein a plurality of linear lines are calculated as operation routes.

20. An operation route searching method according to claim 19, further comprising:

calculating a solid angle formed by at least two of the linear lines.

21. An operation route searching method according to claim 19, further comprising:

calculating a cone formed by at least three of the linear lines.

22. An operation route searching method according to claim 19, further comprising:

calculating a size of a polygon formed by connecting crossing points of the linear lines and a surface of the body.

23. An operation route searching method comprising:

inputting a plurality of images obtained by tomography of a body including a diseased portion;

enabling an operator to specify the diseased portion included in the images;

converting the specified diseased portion into a three-dimensional structure; and

calculating a linear line as an operation route directed to a designated point within the three-dimensional structure from outside of the body.

24. An operation route searching method according to claim 23, wherein the calculated linear line is a line having a shortest distance between the geometrical center point and a surface of the body from among other possible lines.

25. An operation route searching method according to claim 23, wherein the operator is enabled to detect the diseased portion in accordance with attributes of tissue regions.

26. An operation route searching method according to claim 23, further comprising:

storing data indicating a predetermined tissue region; and

calculating an interference between the linear line and the predetermined tissue region based on the stored data.

27. A recording medium having stored thereon a searching program for causing a computer to execute an operation route searching process comprising:

inputting into the computer a plurality of images obtained by tomography of a body including a diseased portion;

enabling an operator to specify the diseased portion included in the images;

converting the specified diseased portion into a three-dimensional structure;

calculating a geometrical center point of the three-dimensional structure as a center of said diseased portion; and

calculating a linear line as an operation route directed to the geometrical center point from outside of the body.

28. A recording medium according to claim 27, wherein the process further comprises:

storing data indicating a predetermined tissue region; and

calculating an interference between the linear line and the predetermined tissue region based on the stored data.

29. A recording medium according to claim 27, wherein a plurality of linear lines are calculated as operation routes.

30. A recording medium according to claim 29, wherein the process further comprises:

calculating a solid angle formed by at least two of the linear lines.

31. A recording medium according to claim 29, wherein the process further comprises:

calculating a cone formed by at least three of the linear lines.

32. A recording medium according to claim 29, wherein the process further comprises:

calculating a size of a polygon formed by connecting crossing points of the linear lines and a surface of the body.

33. A recording medium having stored thereon a searching program for causing a computer to execute an operation route searching process comprising:

inputting a plurality of images obtained by tomography of a body including a diseased portion;

enabling an operator to specify the diseased portion included in the images;

converting the specified diseased portion into a three-dimensional structure; and

calculating a linear line directed as an operation route directed to a designated point within the three dimensional structure from outside of the body.

34. A recording medium according to claim 33, wherein the calculated linear line is a line having a shortest distance between the geometrical center point and a surface of the body from among other possible lines.

35. A recording medium according to claim 33, wherein the operator is enabled to specify the diseased portion in accordance with attributes of tissue regions.

36. A recording medium according to claim 33, wherein the process further comprises:

storing data indicating a predetermined tissue region; and

calculating an interference between the linear line and the predetermined tissue region based on the stored data.