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Modeling device, program, computer-readable recording medium, and method of establishing correspondence

Foreign code F110003471
File No. A281-04WO
Posted date Jun 27, 2011
Country United States of America
Application number 79588806
Gazette No. 20080120078
Gazette No. 8095321
Date of filing Jan 25, 2006
Gazette Date May 22, 2008
Gazette Date Jan 10, 2012
International application number JP2006301142
International publication number WO2006080349
Date of international filing Jan 25, 2006
Date of international publication Aug 3, 2006
Priority data
  • P2005-018949 (Jan 26, 2005) JP
  • 2006WO-JP301142 (Jan 25, 2006) WO
Title Modeling device, program, computer-readable recording medium, and method of establishing correspondence
Abstract (US8095321)
A modeling device is disclosed that easily projects characteristic information obtained from an object onto a differently-shaped object, even if the object, from which the characteristic information is obtained, has a complex shape.
A modeling device in one embodiment of the present invention includes a virtually electrifying section to calculate an electric potential at a spot in a heart at the time when a predetermined voltage is applied to the heart, and a projecting section to project a fiber orientation onto a heart model created on the basis of shape information that is input to the input section.
The projecting section specifies a spot to be a target of projection on the basis of the electric potential obtained by the virtually electrifying section.
Use of the electric potential in specifying the spot makes it possible to easily project the fiber orientation onto any heart having complex and various shapes.
Scope of claims [claim1]
1. A modeling device, comprising: an input section configured to receive shape information on an object, and characteristic information,
the characteristic information indicating a correspondence between a spot in the object and a characteristic;
a processor; and
a storage unit storing executable code capable of causing the processor to implement a
virtually electrifying section configured to obtain by calculation, on a basis of the shape information that is input to the first input section, an electric potential at a spot in the object at a time when a predetermined voltage is applied to the object, and
a projecting section configured to project, onto an object model based on the shape information, the characteristic contained in the characteristic information,
the projecting section being configured to specify a spot in the object model on a basis of the electric potential obtained by the virtually electrifying means, onto which spot the characteristic is to be projected,
wherein the object is a heart and the characteristic includes a fiber orientation and/or a sheet orientation of a cardiac muscle cell.
[claim2]
2. The modeling device of claim 1, wherein: the characteristic contained in the characteristic information is an orientation-related characteristic;
the virtually electrifying section is configured to obtain by calculation an electric current orientation at a spot in the object at a time when the voltage is applied to the object, and sets a local coordinate system of the object on a basis of the electric current orientation obtained; and
the projecting section is configured to project the orientation-related characteristic on a basis of the local coordinate system set by the virtually electrifying section.
[claim3]
3. The modeling device of claim 1, wherein: the virtually electrifying section is configured to obtain (i) the electric potential at a spot in the heart at a time when the predetermined voltage is applied between an apex and a base and (ii) the electric potential at the spot in the heart at a time when the predetermined voltage is applied between an endocardium and an epicardium; and
the projecting section is configured to specify, on a basis of (i) the electric potential at the time when the predetermined voltage is applied between the apex and the base, (ii) the electric potential at the time when the voltage is applied between the endocardium and the epicardium, and (iii) an angle along a rotation orientation having a central axis extending in an orientation between the apex and the base, the spot in the object model, onto which spot the characteristic is to be projected.
[claim4]
4. The modeling device of claim 3, wherein: the local coordinate system is an orthogonal coordinate system;
a first coordinate axis of the local coordinate system extends in the electric current orientation at a time when the voltage is applied between the apex and the base;
a second coordinate axis of the local coordinate system is orthogonal to either of the first coordinate axis and an axis extending in the electric current orientation at a time when the voltage is applied between the endocardium and the epicardium; and
a third coordinate axis of the local coordinate system is orthogonal to either of the first coordinate axis and the second coordinate axis.
[claim5]
5. The modeling device of claim 1, wherein the storage unit further stores executable code capable of causing the processor to implement a geometry section configured to perform a geometry process on the object model on which the characteristic is projected by the projecting means; and
a display section configured to display the object model on which the geometry process is performed by the geometry means.
[claim6]
6. A non-transitory computer readable medium storing a program, the program including code executable by a computer to cause the computer to implement the input section, virtually electrifying section, and projecting section of the modeling device of claim 1.
  • Inventor, and Inventor/Applicant
  • HISADA TOSHIAKI
  • KUROKAWA HIROSHI
  • OSHIDA NOBUHIKO
  • YAMAMOTO MASAFUMI
  • WASHIO TAKUMI
  • OKADA JUN-ICHI
  • WATANABE HIROSHI
  • SUGIURA SEIRYO
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
Reference ( R and D project ) CREST The Innovation of Simulation Technology and the Construction of Foundations for Its Practical Use AREA
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