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STRUCTURE ESTIMATION DEVICE, STRUCTURE ESTIMATION METHOD, AND PROGRAM

外国特許コード F170009056
整理番号 AF16-09WO
掲載日 2017年4月26日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2016JP076246
国際公開番号 WO 2017043503
国際出願日 平成28年9月7日(2016.9.7)
国際公開日 平成29年3月16日(2017.3.16)
優先権データ
  • 特願2015-179892 (2015.9.11) JP
発明の名称 (英語) STRUCTURE ESTIMATION DEVICE, STRUCTURE ESTIMATION METHOD, AND PROGRAM
発明の概要(英語) In the present invention, a plurality of points present in a subject membrane are acquired in a medical image, an initial shape of a polyhedron including the plurality of points is created, normal lines at the points are acquired, and a membrane structure is estimated by creating an equivalent face using a radial basis function on the basis of the normal lines and point coordinates.
特許請求の範囲(英語) [claim1]
1. In on the medical picture, the point acquisition expedient which acquires the plural points which exist inside the membrane which is dealt with and,
The early form compilation expedient which draws up the early form of the polyhedron which includes the aforementioned plural points and,
The normal acquisition expedient which acquires the normal line in the aforementioned point and,
The membrane structural presumption expedient which presumes membrane structure by the fact that the equivalent aspect is drawn up on the basis of the coordinate and the aforementioned normal line of the aforementioned point, making use of radius vector basis function and,
The structural presumption device which features that it has.
[claim2]
2. In claim 1 in the structural presumption device of statement,
As for the aforementioned early form compilation expedient,
The structural presumption device which features that the aforementioned early form of the aforementioned polyhedron which includes the aforementioned plural points on the basis of the label of the predetermined number which corresponds to coordinate, is drawn up.
[claim3]
3. In claim 2 in the structural presumption device of statement,
As for the aforementioned early form compilation expedient,
The structural presumption device which features that the aforementioned early form of the aforementioned polyhedron which includes the aforementioned plural points the incident relation characteristic which responds to the aforementioned label of the aforementioned point, on the basis of the distance of the aforementioned point, and the maximum amount of the side of the aforementioned polyhedron which designates the aforementioned point as end point, is drawn up.
[claim4]
4. From claim 1 either of 3 in one in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
The structural presumption device which features that you acquire as the aforementioned normal line where it selects the datum point from the aforementioned point, selects the aforementioned datum point adjacent aforementioned point of predetermined number, it calculates the normal line of triangle of the predetermined number which from the aforementioned datum point and the aforementioned datum point adjacent point is formed, calculates the average normal line which is even the normal line of triangle of the aforementioned predetermined number, in the aforementioned average normal line the aforementioned datum point.
[claim5]
5. In claim 2 in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
Furthermore, standard normal line is decided from the aforementioned normal line in the aforementioned point where the identical aforementioned label is granted, the structural presumption device which features that direction of the aforementioned normal line in the aforementioned point where the aforementioned identical label is granted on the basis of the contiguity relationship of direction, and the aforementioned point of the aforementioned standard normal line, is corrected.
[claim6]
6. From claim 1 either of 3 in one in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
Furthermore, the structural presumption device which features that it smooths aforementioned normal line where it selects the datum point from the aforementioned point, does the weight attaching which responds to the distance of the aforementioned datum point and the aforementioned contiguity apex, vis-a-vis the normal line in the aforementioned point which becomes contiguity apex of the aforementioned datum point making use of gauss function, in aforementioned datum point on the basis of aforementioned weight attaching.
[claim7]
7. From claim 1 either of 3 in one in the structural presumption device of statement,
As for the aforementioned point acquisition expedient,
Furthermore, between two aforementioned points which become end point of the side of the aforementioned polyhedron in on the aforementioned medical picture, the auxiliary point of predetermined number is acquired,
As for the aforementioned normal acquisition expedient,
On the basis of the position of the aforementioned auxiliary point, the structural presumption device which features that the normal line in the aforementioned point is acquired.
[claim8]
8. From claim 1 either of 3 in one in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
The structural presumption device which features that the aforementioned normal line in the selective point which is the aforementioned point which is selected from the aforementioned plural points is acquired.
[claim9]
9. In claim 8 in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
Making the aforementioned early form indicate, the structural presumption device which features that the aforementioned normal line which makes the aforementioned selective point the user select from the aforementioned plural points, in the aforementioned selective point is acquired.
[claim10]
10. In claim 8 or 9 in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
The structural presumption device which features that the aforementioned normal line in the aforementioned selective point on the basis of the surface which includes the aforementioned selective point which forms the aforementioned polyhedron, is acquired.
[claim11]
11. From claim 1 either of 3 in one in the structural presumption device of statement,
As for the aforementioned normal acquisition expedient,
Making the aforementioned early form indicate, addition of the aforementioned point point and/or to the deletion to the user, the structural presumption device which features that the aforementioned normal line in the aforementioned point is acquired.
[claim12]
12. In claim 2 in the structural presumption device of statement,
As for the aforementioned point acquisition expedient,
In on the aforementioned medical picture, in every label of the aforementioned predetermined number, the structural presumption device which features that the aforementioned plural points which exist inside the aforementioned membrane which is dealt with are acquired.
[claim13]
13. From claim 1 either of 11 in one in the structural presumption device of statement,
As for the aforementioned point acquisition expedient,
By the fact that the point with respect to structure other than the aforementioned membrane is extracted in on the aforementioned medical picture, with territory extended method, the structural presumption device which features that the aforementioned plural points which exist inside the aforementioned membrane which is dealt with are acquired.
[claim14]
14. From claim 1 either of 8 in one in the structural presumption device of statement,
As for the aforementioned point acquisition expedient,
Making the aforementioned medical picture indicate, the structural presumption device which features that it makes the point input which exists inside the aforementioned membrane which it deals with on the aforementioned medical picture in the user, acquires the aforementioned plural points.
[claim15]
15. From claim 1 either of 8 in one in the structural presumption device of statement,
As for the aforementioned point acquisition expedient,
Making the aforementioned medical picture indicate, by the fact that it inputs the line which shows the aforementioned membrane which it deals with on the aforementioned medical picture in the user the point on the aforementioned line it specifies, the structural presumption device which features that the aforementioned plural points are acquired.
[claim16]
16. From claim 1 either of 15 in one in the structural presumption device of statement,
As for the aforementioned membrane structural presumption expedient,
The structural presumption device which features that the aforementioned membrane structure is presumed by the fact that the aforementioned equivalent aspect is drawn up on the basis of the coordinate and the aforementioned normal line of the aforementioned point, making use of the RBF interpolation which is based on the aforementioned radius vector basis function.
[claim17]
17. From claim 1 either of 8 in one in the structural presumption device of statement,
As for the aforementioned membrane structural presumption expedient,
Furthermore, making the aforementioned membrane structure indicate, in the user addition of the aforementioned point and/or the structural presumption device which features that it can point to deletion.
[claim18]
18. From claim 1 either of 8 in one in the structural presumption device of statement,
As for the aforementioned membrane structural presumption expedient,
Furthermore, making the aforementioned membrane structure indicate, in the user modification and addition of the aforementioned normal line and/or the structural presumption device which features that it can point to deletion.
[claim19]
19. From claim 1 either of 18 in one in the structural presumption device of statement,
The picture reconstruction expedient which draws up the reconstruction picture which reconstructed the aforementioned medical picture on the basis of the aforementioned membrane structure which is presumed by the aforementioned membrane structural presumption expedient, and,
The picture output expedient which makes the aforementioned reconstruction picture output and,
Furthermore the structural presumption device which features that it has.
[claim20]
20. In claim 19 in the structural presumption device of statement,
As for the aforementioned picture reconstruction expedient,
The structural presumption device which features that the aforementioned reconstruction picture which quarries out the range of the aforementioned membrane on the basis of the aforementioned membrane structure which is presumed by the aforementioned membrane structural presumption expedient, is drawn up.
[claim21]
21. In claim 19 in the structural presumption device of statement,
As for the aforementioned picture reconstruction expedient,
Furthermore, the structural presumption device which features that the aforementioned reconstruction picture which portrays the structure other than the membrane from the aforementioned medical picture with volume rendering method, is drawn up.
[claim22]
22. From claim 19 either of 21 in one in the structural presumption device of statement,
As for the aforementioned picture reconstruction expedient,
Furthermore, certain of the aforementioned membrane structure which is presumed by the aforementioned membrane structural presumption expedient it seems the value which is shown is acquired,
As for the aforementioned picture output expedient,
Furthermore, certain of the aforementioned membrane structure it seems, the structural presumption device which features that the value which is shown is made to indicate.
[claim23]
23. From claim 1 either of 22 in one in the structural presumption device of statement,
As for the aforementioned medical picture,
The structural presumption device which features that it is the CT picture or the MRI picture which cannot identify the contrast of the aforementioned membrane structure visual.
[claim24]
24. In on the medical picture, the point acquisition step which acquires the plural points which exist inside the membrane which is dealt with and,
The early form compilation step which draws up the early form of the polyhedron which includes the aforementioned plural points and,
The normal acquisition step which acquires the normal line in the aforementioned point and,
The membrane structural presumption step which presumes membrane structure by the fact that the equivalent aspect is drawn up on the basis of the coordinate and the aforementioned normal line of the aforementioned point, making use of radius vector basis function and,
The structural presumption method of featuring that it includes.
[claim25]
25. In on the medical picture, the point acquisition step which acquires the plural points which exist inside the membrane which is dealt with and,
The early form compilation step which draws up the early form of the polyhedron which includes the aforementioned plural points and,
The normal acquisition step which acquires the normal line in the aforementioned point and,
The membrane structural presumption step which presumes membrane structure by the fact that the equivalent aspect is drawn up on the basis of the coordinate and the aforementioned normal line of the aforementioned point, making use of radius vector basis function and,
The program in order to make the computer execute.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
  • 発明者(英語)
  • SUZUKI MUNEMURA
  • MASUTANI YOSHITAKA
  • AHARA KAZUSHI
  • UEDA TAKUYA
国際特許分類(IPC)
指定国 (WO201743503)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
参考情報 (研究プロジェクト等) CREST Alliance for Breakthrough between Mathematics and Sciences (ABMS) AREA
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