C.8.21.3.1.1 X-Ray 3D General Shared Acquisition Macro

Table C.8.21.3.1.1-1 describes the X-Ray 3D General Shared Acquisition Macro that specifies the attributes that are applicable for all the projection images belonging to this application context.

Table C.8.21.3.1.1-1X-RAY 3D GENERAL SHARED ACQUISITION MACRO

Attribute Name Tag Type Attribute Description
Source Image Sequence (0008,2112) 1C A Sequence that identifies the set of Images that constitute this acquisition context. Required if the reconstruction is created from DICOM SOP Instances. Note: The attribute is absent in the case where the images used to create the volume are not available as SOP Instances, e.g., the volume was directly generated by acquisition system. One or more Items shall be included in this Sequence.
>Include ‘Image SOP Instance Reference Macro’ Table 10-3
Field of View Dimension(s) in Float (0018,9461) 1C Dimensions in mm of the Field of View in the source projection images. If Field of View Shape (0018,1147) is: RECTANGLE: row dimension followed by column. ROUND: diameter. HEXAGONAL: diameter of the circle circumscribing the hexagon. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG.
Field of View Origin (0018,7030) 1C Offset of the TLHC of a rectangle circumscribing the Field of View in the referenced images, before rotation or flipping, from the TLHC of the physical detector area measured in physical detector pixels as a row offset followed by a column offset. See C.8.11.4.1.1 for further explanation. Required if X-Ray Receptor Type (0018,9420) is present and equals DIGITAL_DETECTOR.
Field of View Rotation (0018,7032) 1C Clockwise rotation in degrees of Field of View in the referenced images, relative to the physical detector. Enumerated Values: 0, 90, 180, 270 See C.8.11.4.1.1 for further explanation. Required if present and consistent in the contributing SOP Instances.
Field of View Horizontal Flip (0018,7034) 1C Whether or not a horizontal flip has been applied to the Field of View in the referenced images, after rotation relative to the physical detector as described in Field of View Rotation (0018,7032). Enumerated Values: NO YES See C.8.11.4.1.1 for further explanation. Required if present and consistent in the contributing SOP Instances.
Grid (0018,1166) 1C Identifies the grid. May be multi-valued. See Attribute Description in Section C.8.7.11 for Defined Terms. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG.
Include ‘X-Ray Grid Description Macro’ Table C.8-36b
KVP (0018,0060) 1C Average of the peak kilo voltage outputs of the X-Ray generator used for all frames. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG.
X-Ray Tube Current in mA (0018,9330) 1C Average of the nominal X-Ray tube currents in milliamperes for all frames. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG.
Exposure Time in ms (0018,9328) 1C Total (cumulative) duration of X-Ray exposure for all frames in milliseconds. See C.8.7.2.1.1. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG.
Exposure in mAs (0018,9332) 1C The total (cumulative) exposure for all frames expressed in milliampereseconds, for example calculated from Exposure Time and X-Ray Tube Current. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG.
Contrast/Bolus Agent (0018,0010) 1C Contrast or bolus agent. Required if present and consistent in the contributing SOP Instances.
Contrast/Bolus Agent Sequence (0018,0012) 1C Sequence that identifies the contrast agent. One or more Items shall be included in this sequence. Required if present and consistent in the contributing SOP Instances. Required if Modality (0008,0060) is MG and contrast media was applied.
>Include ‘Code Sequence Macro’ Table 8.8-1 Baseline CID 12.
Start Acquisition DateTime (0018,9516) 1C Start date and time of that part of an acquisition used for this acquisition context. Required if present and consistent in the contributing SOP Instances.
End Acquisition DateTime (0018,9517) 1C End date and time of that part of an acquisition used for this acquisition context. Required if present and consistent in the contributing SOP Instances.