Method and system for automatic lung segmentation
First Claim
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1. A method of segmenting lungs from a Computerized Tomography (CT) volume comprising a plurality of slices, said method comprising:
- using a processor to perform steps comprising;
thresholding said CT volume using a predetermined threshold;
segmenting a middle slice of said CT volume using a region-based technique; and
segmenting a plurality of non-middle slices of said CT volume using a contour-based technique, without using a region-based technique for the non-middle slices.
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Abstract
Disclosed is a systematic way of automatically segmenting lung regions. To increase the efficiency of a lung segmentation technique, a region-based technique, such as region growing, is performed by a computer on a middle slice of the CT volume. A contour-based technique is then used for a plurality of non-middle slices of the CT volume. This allows the implementation to be multithreaded and results in an improvement in the segmentation algorithm'"'"'s efficiency.
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Citations
32 Claims
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1. A method of segmenting lungs from a Computerized Tomography (CT) volume comprising a plurality of slices, said method comprising:
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using a processor to perform steps comprising; thresholding said CT volume using a predetermined threshold; segmenting a middle slice of said CT volume using a region-based technique; and segmenting a plurality of non-middle slices of said CT volume using a contour-based technique, without using a region-based technique for the non-middle slices. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus for segmenting lungs from a Computerized Tomography (CT) volume comprising a plurality of slices, said apparatus comprising:
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means for thresholding said CT volume using a predetermined threshold; means for segmenting a middle slice of said CT volume using a region-based technique; and means for segmenting a plurality of non-middle slices of said CT volume using a contour-based technique, without using a region-based technique for the non-middle slices. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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25. A non-transitory computer readable medium comprising computer program instructions capable of being executed in a processor and defining the steps comprising:
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thresholding a CT volume using a predetermined threshold; segmenting a middle slice of said CT volume using a region-based technique; and segmenting a plurality of non-middle slices of said CT volume using a contour-based technique, without using a region-based technique for the non-middle slices. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32)
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Specification