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

Foreign code F120006722
File No. A281-04US2
Posted date May 28, 2012
Country United States of America
Application number 201113314534
Gazette No. 20120084014
Gazette No. 8554491
Date of filing Dec 8, 2011
Gazette Date Apr 5, 2012
Gazette Date Oct 8, 2013
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
  • 2007US-11795888 (Jul 24, 2007) US
Title Modeling device, program, computer-readable recording medium, and method of establishing correspondence
Abstract (US8554491)
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 of a first object,
characteristic information of a second object, the characteristic information containing a spot in the second object and a characteristic at the spot in the second object, the second object being different from the first object, and
shape information of the second object;
a processor; and
a storage unit storing executable code that when executed by the processor causes the processor to implement a virtually electrifying section configured to obtain by calculation, on a basis of the shape information of the first object and the shape information of the second object, (i) an electric potential at a spot in the first object at a time when a predetermined voltage is applied to the first object and (ii) an electric potential at a spot in the second object at a time when the predetermined voltage is applied to the second object; and
a projecting section configured to specify, on a basis of the electric potential obtained by the virtually electrifying section, a spot in a first object model, and configured to project the characteristic onto the specified spot in the first object model,
the specified spot in the first object model corresponding to the spot included in the characteristic information of the second object, wherein
the first object is a heart, and
the characteristic contained in the characteristic information of the second object is related to a fiber orientation and/or a sheet orientation of a cardiac muscle cell.
[claim2]
2. The modeling device of claim 1, wherein the executable code stored in the storage section, when executed by the processor, further causes the processor to implement, a converting section configured to convert an orientation-related characteristic contained in the characteristic information of the second object into orientation data based on a local coordinate system of the second object,
the characteristic contained in the characteristic information of the second object being the orientation-related characteristic,
wherein the virtually electrifying section is configured to obtain by calculation (i) an electric current orientation at a spot in the first object at a time when the voltage is applied to the first object and (ii) an electric current orientation at a spot in the second object at a time when the voltage is applied to the second object; and set a local coordinate system of the first object on a basis of the electric current orientation calculated, and
wherein the projecting section is configured to project, on a basis of the local coordinate system of the first object, the orientation data converted by the converting 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 first object model onto which the characteristic is to be projected.
[claim4]
4. The modeling device of claim 3, wherein: a 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, further comprising: a display section,
wherein the executable code stored in the storage section, when executed by the processor, further causes the processor to implement, a geometry section configured to perform a geometry process on the first object model on which the characteristic is projected by the projecting section, and
wherein the display section is configured to display the first object model on which the geometry process is performed by the geometry section.
[claim6]
6. A non-transitory computer readable medium storing a program, the program including code executable by a computer to cause the computer to perform modeling operations, the modeling operations including, controlling an input section to receive, shape information of a first object,
characteristic information of a second object, the characteristic information containing a spot in the second object and a characteristic at the spot in the second object, the second object being different from the first object, and
shape information of the second object,
implementing a virtually electrifying section configured to obtain by calculation, on a basis of the shape information of the first object and the shape information of the second object, (i) an electric potential at a spot in the first object at a time when a predetermined voltage is applied to the first object and (ii) an electric potential at a spot in the second object at a time when the predetermined voltage is applied to the second object; and
implementing a projecting section configured to specify, on a basis of the electric potential obtained by the virtually electrifying section, a spot in a first object model, and configured to project the characteristic onto the specified spot in the first object model,
the specified spot in the first object model corresponding to the spot included in the characteristic information of the second object, wherein
the first object is a heart, and
the characteristic contained in the characteristic information of the second object is related to a fiber orientation and/or a sheet orientation of a cardiac muscle cell.
  • 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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