Endoscope insertion support system and endoscope insertion support method
First Claim
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1. An endoscope insertion support system comprising:
- a volume area setting processing circuit for setting a volume area which has a start point set in a tubular path of a tubular organ within three-dimensional image data of a subject and has a size so prescribed as to contain the tubular organ;
an organ area information calculating processing circuit which extracts tubular area information in the volume area on the basis of the three-dimensional image data of the tubular organ in the volume area and calculates segmentation data representing a tubular path shape;
a contained state determining processing circuit which determines whether or not the tubular path is contained in the volume area set by the volume area setting processing circuit;
a heteromorphic state detecting processing circuit which detects a strictured or expanded state of the tubular path, as a heteromorphic state, on the basis of at least one of a diameter, area and circumferential length out of the segmentation data calculated by the organ area information calculating processing circuit; and
a hierarchical volume area setting processing circuit which sets a hierarchical volume area obtained by being hierarchically arranged and linked to the volume area set by the volume area setting processing circuit to a size based on a result of determination by the contained state determining processing circuit.
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Abstract
According to the invention, a VOI (Volume of Interest) generation setting section disposed in an endoscope insertion support apparatus comprises a VOI setting function section, a VOI extending function section, a VOI direction determining function section, a VOI branch determining function section, a VOI resetting function section, a VOI information storage function section, a VOI size determining function section and a VOI branch extracting function section. This configuration enables a VOI to be effectively set in a tubular organ having a strictured part and tubular path area information on the tubular organ to be extracted.
43 Citations
12 Claims
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1. An endoscope insertion support system comprising:
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a volume area setting processing circuit for setting a volume area which has a start point set in a tubular path of a tubular organ within three-dimensional image data of a subject and has a size so prescribed as to contain the tubular organ; an organ area information calculating processing circuit which extracts tubular area information in the volume area on the basis of the three-dimensional image data of the tubular organ in the volume area and calculates segmentation data representing a tubular path shape; a contained state determining processing circuit which determines whether or not the tubular path is contained in the volume area set by the volume area setting processing circuit; a heteromorphic state detecting processing circuit which detects a strictured or expanded state of the tubular path, as a heteromorphic state, on the basis of at least one of a diameter, area and circumferential length out of the segmentation data calculated by the organ area information calculating processing circuit; and a hierarchical volume area setting processing circuit which sets a hierarchical volume area obtained by being hierarchically arranged and linked to the volume area set by the volume area setting processing circuit to a size based on a result of determination by the contained state determining processing circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An endoscope insertion support method comprising the following steps executed by a computer:
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a volume area setting step of setting a volume area which has a start point set in a tubular path of a tubular organ within three-dimensional image data of a subject stored in a storage device and has a size so prescribed as to contain the tubular organ; an organ area information calculating step of extracting tubular area information in the volume area on the basis of the three-dimensional image data of the tubular organ in the volume area and calculating segmentation data representing a tubular path shape; a contained state determining step of determining whether or not the tubular path is contained in the volume area set at the volume area setting step; a heteromorphic state detecting step of detecting a strictured or expanded state of the tubular path, as a heteromorphic state, on the basis of at least one of a diameter, area and circumferential length out of the segmentation data calculated at the organ area information calculating processing step; and a hierarchical volume area setting step of setting a hierarchical volume area obtained by being hierarchically arranged and linked to the volume area set at the volume area setting step to a size based on a result of determination at the contained state determining step.
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Specification