METHOD FOR CALCULATING PRESSURES IN A FLUID STREAM THROUGH A TUBE SECTION, ESPECIALLY A BLOOD VESSEL WITH ATHEROSCLEROTIC PLAQUE
First Claim
1. A method for calculating pressures in a fluid stream through a tube section from an upstream end to a downstream end of the tube section, the tube section comprising at least one flow divider dividing the fluid stream from an inlet to at least two arms, each arm with an outlet, the method comprisingscanning the tube section with a scanner and providing a plurality of cross-sectional 2D scanning images along the fluid stream;
- said cross-sectional 2D scanning images being a 2D slicing of the section along the flow direction in the tube but not necessarily normal to a fluid direction,by a computer program on the basis of the 2D images automatically calculating a 3D image of the tube section by using interpolation between the 2D images,by a computer program performing a 2D sectional image cut through the 3D image, the image cut following the fluid stream in the tube section with the arms,calculating in the sectional image cut a fluid pressure distribution along the tube section on the basis of given boundary conditions, the boundary conditions including fluid velocity or fluid pressure at the upstream end.
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Abstract
A method for calculating pressures in a fluid streaming through a tube section from an upstream end to a downstream end of the tube section, the method comprising scanning the tube section with a scanner and providing a plurality of 2D scanning images along the tube section with an inlet and at least two arms, by a computer program on the basis of the 2D images automatically N calculating a 3D image of the tube section by using interpolating between the 2D images, by a computer program performing a 2D sectional image cut through the 3D image, the image cut following the fluid stream, calculating in the sectional image cut a fluid pressure distribution along multiple locations inside the tube on the basis of given boundary conditions, the boundary conditions including fluid velocity or fluid pressure at the upstream end.
121 Citations
18 Claims
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1. A method for calculating pressures in a fluid stream through a tube section from an upstream end to a downstream end of the tube section, the tube section comprising at least one flow divider dividing the fluid stream from an inlet to at least two arms, each arm with an outlet, the method comprising
scanning the tube section with a scanner and providing a plurality of cross-sectional 2D scanning images along the fluid stream; - said cross-sectional 2D scanning images being a 2D slicing of the section along the flow direction in the tube but not necessarily normal to a fluid direction,
by a computer program on the basis of the 2D images automatically calculating a 3D image of the tube section by using interpolation between the 2D images, by a computer program performing a 2D sectional image cut through the 3D image, the image cut following the fluid stream in the tube section with the arms, calculating in the sectional image cut a fluid pressure distribution along the tube section on the basis of given boundary conditions, the boundary conditions including fluid velocity or fluid pressure at the upstream end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- said cross-sectional 2D scanning images being a 2D slicing of the section along the flow direction in the tube but not necessarily normal to a fluid direction,
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18. A system calculating pressures in a fluid streaming through a tube section from an upstream end to a downstream end of the tube section, the tube section comprising at least one flow divider dividing the fluid stream from an inlet to at least two arms, each arm with an outlet, the system comprising
a scanner for scanning the tube section and for providing a plurality of cross-sectional 2D scanning images along the tube section, a computer programmed for on the basis of the 2D images automatically calculating a 3D image of the tube section by using interpolating between the 2D images, and for performing a 2D sectional image cut through the 3D image, the image cut following the fluid stream in the tube section with the arms, and for calculating in the sectional image cut a fluid pressure distribution along multiple locations along the tube section on the basis of given boundary conditions, the boundary conditions including fluid velocity or fluid pressure at the upstream end.
Specification