Medical instrument and medical instrument control method

• US 8,150,138 B2
• Filed: 07/06/2011
• Issued: 04/03/2012
• Est. Priority Date: 06/02/2010
• Status: Active Grant

• Current Assignee: Olympus Corporation
• Original Assignee: Olympus Medical Systems Corporation (Olympus Corporation)
• Inventors: Ohnishi, Junichi
• Primary Examiner(s): PATEL, KANJIBHAI B
• Application Number:
  US13/177,027
• Publication Number:
  US 20110311124A1
• Time in Patent Office: 272 Days
• Field of Search: 382128-134, 382/173, 382/217, 382/218, 382/224, 382/305, 382/312, 600/454, 600/485
• US Class Current: 382/134
• CPC Class Codes: G06T 2207/10081 Computed x-ray tomography [CT]
• CPC Class Codes: G06T 2207/20036 Morphological image processing
• CPC Class Codes: G06T 2207/30061 Lung
• CPC Class Codes: G06T 2207/30096 Tumor; Lesion
• CPC Class Codes: G06T 2207/30101 Blood vessel; Artery; Vein; Vascular
• CPC Class Codes: G06T 7/0012 Biomedical image inspection

Abstract

A navigation apparatus includes: a storage portion that stores three-dimensional image data of an examinee that is previously acquired; an organ extracting portion that extracts a predetermined organ from the three-dimensional image data; a first region designating portion that designates a tumor in the three-dimensional image data; a blood vessel extracting portion that extracts a plurality of blood vessels that are inside the organ from the three-dimensional image data; a blood vessel classifying portion that classifies the blood vessels into either arteries or veins; and a second region extracting portion that, based on three-dimensional image information of the blood vessels, extracts a tumor resection region that is a region that is classified based on anatomical features of the organ and that includes a tumor.

Claims

1. A medical instrument, comprising:

a storage portion that stores three-dimensional image data of inside a body of an examinee that is previously acquired;

an organ extracting portion that extracts a predetermined organ from the three-dimensional image data;

a first region designating portion that designates a first region of the organ in the three-dimensional image data;

a blood vessel extracting portion that extracts a plurality of blood vessels that are inside the organ from the three-dimensional image data;

a blood vessel classifying portion that classifies the plurality of blood vessels that the blood vessel extracting portion extracts into either arteries or veins;

a template creating portion that creates a blood vessel region template comprising a blood vessel-related region in which a diameter of at least either one of the arteries and the veins classified by the blood vessel classifying portion is increased by a predetermined amount; and

a second region extracting portion that, based on the blood vessel region template, extracts a second region that is a region that is classified according to anatomical features of the organ and that includes the first region.

2. The medical instrument according to claim 1, wherein the second region extracting portion extracts the second region from three-dimensional image information of a blood vessel that is at a shortest distance from the first region.

3. The medical instrument according to claim 2, wherein when there are a plurality of the blood vessel-related regions that each include the first region, the second region extracting portion extracts a plurality of the second regions.

4. A medical instrument, comprising:

a storage portion that stores three-dimensional image data of inside a body of an examinee that is previously acquired;

an organ extracting portion that extracts a predetermined organ from the three-dimensional image data;

a first region designating portion that designates a first region of the organ in the three-dimensional image data;

a blood vessel extracting portion that extracts a plurality of blood vessels that are inside the organ from the three-dimensional image data;

a blood vessel classifying portion that classifies the plurality of blood vessels that the blood vessel extracting portion extracts into either arteries or veins;

a standard template storage portion that stores a standard template comprising standard three-dimensional shape information of the organ and the plurality of blood vessels that is based on at least a gender, a body type, and an age of the examinee;

a matching processing portion that performs at least either one of matching processing between the three-dimensional shape information of the plurality of blood vessels of the standard template and the three-dimensional image information of the plurality of blood vessels that the blood vessel extracting portion extracts, and matching processing between the three-dimensional shape information of the organ of the standard template and the three-dimensional image information of the organ that the organ extracting portion extracts; and

a second region extracting portion that, based on a processing result of the matching processing portion, extracts a second region that is a region that is classified according to anatomical features of the organ and that includes the first region.

5. The medical instrument according to claim 4, wherein:

the first region is a tumor region; and

the second region is a tumor resection region.

6. The medical instrument according to claim 5, wherein:

the organ is a lung including a bronchus; and

the second region extracting portion extracts any one major lobe from among a right upper lobe, a right middle lobe, a right lower lobe, a left upper lobe, and a left lower lobe as the second region from the three-dimensional image information of the veins.

7. The medical instrument according to claim 6, wherein:

the second region extracting portion further extracts a subregion in the major lobe as the second region from the three-dimensional image information of the arteries.

8. The medical instrument according to claim 6, further comprising:

a third region extracting portion that, based on the three-dimensional image information of the plurality of blood vessels, extracts a region adjacent to the second region that is extracted by the second region extracting portion, as a third region that is a tumor resection additional region.

9. The medical instrument according to claim 8, wherein a blood vessel of the third region belongs to an identical vascular network as a blood vessel of the second region.

10. A medical instrument control method, comprising:

a data storage step of storing three-dimensional image data of inside a body of an examinee that is previously acquired;

an organ extraction step of extracting a predetermined organ from the three-dimensional image data;

a first region designating step of designating a first region of the organ in the three-dimensional image data;

a blood vessel extraction step of extracting a plurality of blood vessels that are inside the organ from the three-dimensional image data;

a blood vessel classifying step of classifying the plurality of blood vessels that are extracted in the blood vessel extraction step into either arteries or veins;

a template creation step of creating a blood vessel region template comprising a blood vessel-related region in which a diameter of at least either one of the arteries and the veins classified in the blood vessel classifying step is increased by a predetermined amount; and

a second region extraction step of extracting a second region that is a region that is classified according to anatomical features of the organ and that includes the first region, based on the blood vessel region template.

11. The medical instrument control method according to claim 10, wherein:

in the second region extraction step, the second region is extracted based on a distance relationship between a three-dimensional image of at least either one of the arteries and the veins, and the first region.

12. A medical instrument control method, comprising:

a data storage step of storing three-dimensional image data of inside a body of an examinee that is previously acquired;

an organ extraction step of extracting a predetermined organ from the three-dimensional image data;

a first region designating step of designating a first region of the organ in the three-dimensional image data;

a blood vessel extraction step of extracting a plurality of blood vessels that are inside the organ from the three-dimensional image data;

a blood vessel classifying step of classifying the plurality of blood vessels that are extracted in the blood vessel extraction step into either arteries or veins;

a standard template storage step of storing a standard template comprising standard three-dimensional shape information of the organ and the plurality of blood vessels that is based on at least a gender, a body type, and an age of the examinee;

a matching processing step of performing at least either one of matching processing between the three-dimensional shape information of the plurality of blood vessels of the standard template and the three-dimensional image information of at least either one of the arteries and the veins classified in the blood vessel classifying step, and matching processing between the three-dimensional shape information of the organ of the standard template and the three-dimensional image information of the organ that is extracted in the organ extraction step; and

a second region extraction step of extracting a second region that is a region that is classified according to anatomical features of the organ and that includes the first region, based on a result of the matching processing step.