DICOM PS3.3 2021d - Information Object Definitions |
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Table C.11.24-1 contains the Attributes of the Volume Cropping Module. This Module limits the spatial extent of inputs in Volumetric Presentation State Input Sequence (0070,1201) that are used.
Table C.11.24-1. Volume Cropping Module Attributes
Identification number of the cropping specification, as an ordinal number starting from 1 and monotonically increasing by 1 within the Volumetric Presentation State Instance. |
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Method of volume cropping applied. See Section C.11.24.1 for description of terms. |
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A cuboid containing the source volume data to be included. The axes of the cuboid are aligned to the axes of encoded source volume. The bounding box is defined by the (x,y,z) coordinates in mm of two opposite corners in the Volumetric Presentation State Reference Coordinate System. NoteIf the source volume consists of gantry tilted slices (e.g., CT) then the bounding box will be a cuboid in the encoded image space, but a parallelepiped in the VPS-RCS. Required if Volume Cropping Method (0070,1302) has a value of BOUNDING_BOX. |
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Oblique cropping planes that contain the source volume data to be included. One or more Items shall be included in this Sequence. Required if Volume Cropping Method (0070,1302) has a value of OBLIQUE. |
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A plane described by a four-tuple (A,B,C,D) describing coordinates in mm of the plane equation Ax+By+Cz+D=0 relative to the Volumetric Presentation State Reference Coordinate System. |
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Vector of the normal to the plane pointing outside of the volume to be included, encoded as x, y and z values of a unit vector (direction cosine) in the Volumetric Presentation State Reference Coordinate System. |
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Instances of the Segmentation Storage SOP Class (1.2.840.10008.5.1.4.1.1.66.4) containing segments specifying the included or excluded source volume data. Each referenced Segmentation Instance shall have Segmentation Type (0062,0001) value of BINARY and shall share a Frame of Reference with one or more Input Volumes. One or more Items shall be included in this Sequence. Required if Volume Cropping Method (0070,1302) has a value of INCLUDE_SEG or EXCLUDE_SEG. |
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>>Include Table 10-3 “Image SOP Instance Reference Macro Attributes” |
Cropping is an operation in which a portion of the source volume is ignored during subsequent volumetric processing, using one of the methods specified by Volume Cropping Method (0070,1302) :
The source volume data within a bounding box are included in the View
The source volume data within a closed surface described by a set of arbitrarily-oriented planes are included in the View
Source volume data should be included in the View if and only if the data is within any of the referenced Segments that share its value of Input Sequence Position Index (0070,1203) (if specified)
Source volume data should be included in the View if and only if the data is not within any of the referenced Segments that share its value of Input Sequence Position Index (0070,1203) (if specified)
DICOM PS3.3 2021d - Information Object Definitions |
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