Method and system for displaying blood flow
First Claim
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1. A method for displaying blood flow, comprising:
- generating a temporal sequence of 2D phase images representing blood flow through a selected anatomical plane using PCMR imaging, wherein each 2D phase image is made up of pixels with each pixel having an intensity corresponding to the phase of a spin density function at the location of the pixel;
for each 2D phase image, deriving a 3D flow image by mapping location and size information of one or more pixels in the 2D phase image into coordinates of a surface element in an X-Y plane corresponding to the anatomical plane and mapping the intensity of the one or more pixels into a height or Z coordinate for the surface element so that the 3D flow image includes one or more flow surfaces plotted above or below the anatomical plane at a height corresponding to the phase in the 2D phase image;
creating a temporal sequence of the derived 3D flow images that correspond to the temporal sequence of 2D phase images; and
,displaying the sequence of 3D flow images serially to form a four-dimensional flow presentation.
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Abstract
A method and system are disclosed for presenting anatomical and blood flow information contained in a magnetic resonance imaging (MRI) dataset. A three-dimensional (3D) representation of blood flow is generated which varies with time, referred to herein as a four-dimensional (4D) presentation or display. The system allows the visualization of the dynamics of blood flow and the visualization of anatomical information via the fusion of different types of MRI data sets.
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Citations
25 Claims
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1. A method for displaying blood flow, comprising:
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generating a temporal sequence of 2D phase images representing blood flow through a selected anatomical plane using PCMR imaging, wherein each 2D phase image is made up of pixels with each pixel having an intensity corresponding to the phase of a spin density function at the location of the pixel; for each 2D phase image, deriving a 3D flow image by mapping location and size information of one or more pixels in the 2D phase image into coordinates of a surface element in an X-Y plane corresponding to the anatomical plane and mapping the intensity of the one or more pixels into a height or Z coordinate for the surface element so that the 3D flow image includes one or more flow surfaces plotted above or below the anatomical plane at a height corresponding to the phase in the 2D phase image; creating a temporal sequence of the derived 3D flow images that correspond to the temporal sequence of 2D phase images; and
,displaying the sequence of 3D flow images serially to form a four-dimensional flow presentation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system for displaying blood flow, comprising:
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an MRI system configured to generate a temporal sequence of 2D phase images representing blood flow through a selected anatomical plane using PCMR imaging, wherein each 2D phase image is made up of pixels with each pixel having an intensity corresponding to the phase of a spin density function at the location of the pixel; a computer programmed to;
1) for each 2D phase image, derive a 3D flow image by mapping location and size information of one or more pixels in the 2D phase image into coordinates of a surface element in an X-Y plane corresponding to the anatomical plane and mapping the intensity of the one or more pixels into a height or Z coordinate for the surface element so that the 3D flow image includes one or more flow surfaces plotted above or below the anatomical plane at a height corresponding to the phase in the 2D phase image, and
2) create a temporal sequence of the derived 3D flow images that correspond to the temporal sequence of 2D phase images; and
,wherein the computer is further programmed to display the sequence of 3D flow images serially to form a four-dimensional flow presentation. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A non-transitory computer-readable storage medium containing instructions for:
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creating a temporal sequence of 3D flow images from a temporal sequence of 2D phase images representing blood flow through a selected anatomical plane using PCMR imaging, wherein each 2D phase image is made up of pixels with each pixel having an intensity corresponding to the phase of a spin density function at the location of the pixel, by;
1) for each 2D phase image, deriving a 3D flow image by mapping location and size information of one or more pixels in the 2D phase image into coordinates of a surface element in an X-Y plane corresponding to the anatomical plane and mapping the intensity of the one or more pixels into a height or Z coordinate for the surface element so that the 3D flow image includes one or more flow surfaces plotted above or below the anatomical plane at a height corresponding to the phase in the 2D phase image, and
2) create a temporal sequence of the derived 3D flow images that correspond to the temporal sequence of 2D phase images; and
,displaying the sequence of 3D flow images serially to form a four-dimensional flow presentation.
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Specification