Anterior commissure and posterior commissure segmentation system and method
First Claim
1. A method of determining an anterior commissure (AC) point and a posterior commissure (PC) point in a volumetric image, the method comprising:
- creating, by a computer, an edge mask of each of a plurality of axial image slices included in the volumetric image;
identifying, by the computer, a symmetry axis of each edge mask;
fitting, by the computer, a plane to the symmetry axes, the plane defining a mid-sagittal plane estimate;
extracting, by the computer, a mid-sagittal image from the volumetric image based on the mid-sagittal plane estimate; and
determining the AC point and the PC point in the mid-sagittal plane image.
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Abstract
A computer-implemented system and method of determining anterior commissure (AC) and posterior commissure (PC) points in a volumetric neuroradiological image. The method includes determining, by a computer, a mid-sagittal plane estimate to extract a mid-sagittal plane image from the volumetric neuroradiological image, and AC and PC point estimates in the mid-sagittal plane image. The method further includes determining, by the computer, a refined mid-sagittal plane estimate from the AC and PC point estimates to extract a refined mid-sagittal plane image, the AC point from the refined mid-sagittal plane image, and the PC point from the refined mid-sagittal plane image and the AC point.
32 Citations
19 Claims
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1. A method of determining an anterior commissure (AC) point and a posterior commissure (PC) point in a volumetric image, the method comprising:
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creating, by a computer, an edge mask of each of a plurality of axial image slices included in the volumetric image; identifying, by the computer, a symmetry axis of each edge mask; fitting, by the computer, a plane to the symmetry axes, the plane defining a mid-sagittal plane estimate; extracting, by the computer, a mid-sagittal image from the volumetric image based on the mid-sagittal plane estimate; and determining the AC point and the PC point in the mid-sagittal plane image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image processing system configured to determine an anterior commissure (AC) point and a posterior commissure (PC) point in a volumetric image, the system comprising:
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a first module configured to identify a mid-sagittal plane image included in the volumetric image using an AC point approximation and a PC point approximation; a second module configured to identify the AC point based on the mid-sagittal plane image; and a third module configured to identify the PC point based on the mid-sagittal plane image and the AC point. - View Dependent Claims (14, 15, 16)
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17. A non-transitory computer readable medium encoded with a plurality of processor-executable instructions for identifying an anterior commissure (AC) point and a posterior commissure (PC) point in a volumetric image, the instructions including instructions for:
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determining a mid-sagittal plane estimate to extract a mid-sagittal plane image from the volumetric image; estimating the AC point and the PC point in the mid-sagittal plane image; determining a refined mid-sagittal plane based on the AC point and the PC point to extract a refined mid-sagittal plane image; and updating at least one of the AC point and the PC point based on the refined mid-sagittal plane image. - View Dependent Claims (18, 19)
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Specification