DICOM PS3.3 2021d - Information Object Definitions

C.8.4.6 NM/PET Patient Orientation Module (Current)
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#### C.8.4.6 NM/PET Patient Orientation Module

Table C.8-5 specifies the Attributes that describe the NM/PET Patient Orientation.

Table C.8-5. NM/PET Patient Orientation Module Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Patient Orientation Code Sequence | (0054,0410) | 2 | Sequence that describes the orientation of the patient with respect to gravity. See Section C.8.4.6.1.1 for further explanation. Zero or one Item shall be included in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | BCID 19 “Patient Orientation”. Code Meaning (0008,0104) shall be Type 3 for historical reasons.
>Patient Orientation Modifier Code Sequence | (0054,0412) | 2C | Patient Orientation Modifier. Required if needed to fully specify the orientation of the patient with respect to gravity. See Section C.8.4.6.1.2 for further explanation. Zero or one Item shall be included in this Sequence.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | BCID 20 “Patient Orientation Modifier”. Code Meaning (0008,0104) shall be Type 3 for historical reasons.
Patient Gantry Relationship Code Sequence | (0054,0414) | 2 | Describes the orientation of the patient with respect to the gantry. See Section C.8.4.6.1.3 for further explanation. Zero or one Item shall be included in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | BCID 21 “Patient Equipment Relationship”. Code Meaning (0008,0104) shall be Type 3 for historical reasons.

##### C.8.4.6.1 NM/PET Patient Orientation Attribute Descriptions

###### C.8.4.6.1.1 Patient Orientation Code Sequence

The Patient Orientation Code Sequence (0054,0410) is used to describe the orientation of the patient with respect to gravity, and is independent of the position in the gantry.

###### C.8.4.6.1.2 Patient Orientation Modifier Code Sequence

The Patient Orientation Modifier Code Sequence (0054,0412) is used to modify or enhance the orientation specified by Patient Orientation Code Sequence (0054,0410).

###### C.8.4.6.1.3 Patient Gantry Relationship Code Sequence

Patient Gantry Relationship Code Sequence (0054,0414) is used to describe the patient direction within the gantry, such as head-first or feet-first. When imaging the extremities, these directions are related to normal anatomic position.

Example: In normal anatomic position, the fingers point towards the feet.

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DICOM PS3.3 2021d - Information Object Definitions