DICOM PS3.3 2024e - Information Object Definitions |
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The following Series IE Modules are common to all Composite IODs that reference the Series IE.
Table C.7-5a specifies the Attributes of the General Series Module, which identify and describe general information about the Series within a Study.
Table C.7-5a. General Series Module Attributes
Type of device, process or method that originally acquired or produced the data used to create the Instances in this Series. See Section C.7.3.1.1.1 for Defined Terms. |
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Laterality of (paired) body part examined. Required if the body part examined is a paired structure and Image Laterality (0020,0062) or Frame Laterality (0020,9072) or Measurement Laterality (0024,0113) are not present. Note
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Identification of the physician(s) administering the Series. One or more Items are permitted in this Sequence. If more than one Item, the number and order shall correspond to the value of Performing Physician's Name (0008,1050), if present. |
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>Include Table 10-1 “Person Identification Macro Attributes” |
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User-defined description of the conditions under which the Series was performed. NoteThis Attribute conveys Series-specific protocol identification and may or may not be identical to the protocol described in the Performed Protocol Code Sequence (0040,0260) in the Performed Protocol Code Sequence (0040,0260) in Table 10-16 “Performed Procedure Step Summary Macro Attributes”. |
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Identification of the operator(s) supporting the Series. One or more Items are permitted in this Sequence. If more than one Item, the number and order shall correspond to the value of Operators' Name (0008,1070), if present. |
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>Include Table 10-1 “Person Identification Macro Attributes” |
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Uniquely identifies the Performed Procedure Step SOP Instance to which the Series is related. |
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>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
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Identification of Series significantly related to this Series. One or more Items are permitted in this Sequence. Note
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Describes the purpose for which the reference is made. Zero or more Items shall be included in this Sequence. When absent, implies that the reason for the reference is unknown. |
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Text description of the part of the body examined. See Annex L “Correspondence of Anatomic Region Codes and Body Part Examined Defined Terms” in PS3.16 for Defined Terms |
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Patient position descriptor relative to the equipment. Required for images where Patient Orientation Code Sequence (0054,0410) is not present and whose SOP Class is one of the following: CT ("1.2.840.10008.5.1.4.1.1.2") or MR ("1.2.840.10008.5.1.4.1.1.4") or Enhanced CT ("1.2.840.10008.5.1.4.1.1.2.1") or Enhanced MR Image ("1.2.840.10008.5.1.4.1.1.4.1") or Enhanced Color MR Image ("1.2.840.10008.5.1.4.1.1.4.3") or MR Spectroscopy ("1.2.840.10008.5.1.4.1.1.4.2") Storage SOP Classes. May be present for other SOP Classes if Patient Orientation Code Sequence (0054,0410) is not present. See Section C.7.3.1.1.2 for Defined Terms and further explanation. |
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Sequence that contains Attributes from the Imaging Service Request. |
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Include Table 10-16 “Performed Procedure Step Summary Macro Attributes” |
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The anatomical orientation type used in Instances generated by this equipment. Required if the Patient is a non-human organism and the anatomical Frame of Reference is not bipedal. May be present otherwise. See Section C.7.6.1.1.1 and Section C.7.6.2.1.1. |
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A unique identifier of the RT Treatment Session to which Instances in this Series belong. |
If any Performed Procedure Step SOP Class is supported as an SCU by a Storage SCU, the SCU is strongly encouraged to support the Attribute Referenced Performed Procedure Step Sequence (0008,1111). This Attribute references the Performed Procedure Step SOP Instance, and extraction of this Attribute from a Composite Instance may allow retrieval of the Performed Procedure Step SOP Instance.
If the Storage SCU does not conform to any Performed Procedure Step SOP Class, it is still advisable to include the Attributes Performed Procedure Step Start Date (0040,0244), Performed Procedure Step Start Time (0040,0245) and Performed Procedure Step Description (0040,0254) into the Composite Instances.
Defined Terms:
Retired Defined Terms:
The RF modality incorporates the retired modalities CF, DF, VF.
The modality listed in the Modality Data Element (0008,0060) may not match the name of the IOD in which it appears. For example, a SOP Instance from X-Ray Angiographic Image IOD may list the RF modality when an RF implementation produces an XA object.
The MR modality incorporates the retired modalities MA and MS.
The US modality incorporates the retired modalities EC, CD, and DD.
Patient Position (0018,5100) specifies the positioning of the patient relative to the imaging equipment space. This Attribute is intended for annotation purposes only. It does not provide an exact mathematical relationship of the patient to the imaging equipment. The information in Patient Position (0018,5100) is more formally modeled in the Enhanced Patient Orientation Module. See Section C.7.6.30 for additional detail, guidance, and discussion of vertical gantry cases.
When multiple subjects are present in the same image, and arranged with different positions, then the Patient Position (0018,5100) in the General Series Module is nominal, does not apply to each subject, but does define the relationship of the nominal Patient-Based Coordinate System to the machine.
In conjunction with the Patient Position (0018,5100) in each Item of the Group of Patients Identification Sequence (0010,0027), Patient Position (0018,5100) in the General Series Module may be helpful to compute patient-relative spatial information for each subject from the Attributes of the Image Plane Module.
When facing the front of the imaging equipment:
Head First is defined as the patient's head being positioned toward the front of the imaging equipment (i.e., head entering the front of the equipment).
Feet First is defined as the patient's feet being positioned toward the front of the imaging equipment (i.e., feet entering the front of the equipment).
Left First is defined as the patient's left side being positioned towards the front of the imaging equipment (i.e., patient's left side entering the front of the equipment).
Right First is defined as the patient's right being positioned towards the front of the imaging equipment (i.e., patient's right side entering the front of the equipment).
Anterior First is defined as the patient's anterior being positioned towards the front of the imaging equipment (i.e., patient's anterior side entering the front of the equipment).
Posterior First is defined as the patient's posterior being positioned towards the front of the imaging equipment (i.e., patient's posterior side entering the front of the equipment).
Prone is defined as the patient's face being positioned in a downward (gravity) direction.
Supine is defined as the patient's face being in an upward direction.
Decubitus Right is defined as the patient's right side being in a downward direction.
Decubitus Left is defined as the patient's left side being in a downward direction.
Vertical is defined as the patient's feet being positioned in a downward (gravity) direction.
Inverted is defined as the patient's head being positioned in a downward (gravity) direction.
Defined Terms:
Head First-Vertical
Head First-Inverted
Feet First-Vertical
Feet First-Inverted
Left First-Decubitus Right
Left First-Decubitus Left
Right First-Decubitus Right
Right First-Decubitus Left
Anterior First-Prone
Anterior First-Supine
Posterior First-Prone
Posterior First-Supine
For quadrupeds, separate concepts for ventral and dorsal are not introduced, rather it is expected that anterior and posterior will be considered synonymous as they are when applied to the trunk.
In previous releases of the standard, imaging equipment that is aligned vertically with respect to gravity was not addressed. Doing so introduced additional prone, supine, and decubitus variants, as well as vertical and inverted concepts. Older implementations might not recognize or have appropriate behaviors for those Defined Terms. See Section C.7.6.30 for relevant examples.
The Figure C.7.3.1.1.2-1 illustrates some of these Defined Terms for imaging equipment with a table, such as in X-Ray Angiography. The orientation of the patient related to gravity is always recumbent.
Figure C.7.3.1.1.2-2. Example of Right First-Prone (RFP) Patient Position Relative to the Gantry and Table for a Small Animal
DICOM PS3.3 2024e - Information Object Definitions |
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