DICOM PS3.3 2018a - Information Object Definitions

C.7.3 Common Series IE Modules
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### C.7.3 Common Series IE Modules

The following Series IE Modules are common to all Composite Image IODs that reference the Series IE.

#### C.7.3.1 General Series Module

Table C.7-5a specifies the Attributes that identify and describe general information about the Series within a Study.

Table C.7-5a. General Series Module Attributes

Attribute Name | Tag | Type | Attribute Description
--- | --- | --- | ---
Modality | (0008,0060) | 1 | Type of equipment that originally acquired the data used to create the images in this Series. See Section C.7.3.1.1.1 for Defined Terms.
Series Instance UID | (0020,000E) | 1 | Unique identifier of the Series.
Series Number | (0020,0011) | 2 | A number that identifies this Series.
Laterality | (0020,0060) | 2C | 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. Enumerated Values: R right L left ### Note Some IODs support Image Laterality (0020,0062) at the Image level or Frame Laterality (0020,9072) at the Frame level in the Frame Anatomy functional group macro or Measurement Laterality (0024,0113) at the Measurement level, which can provide a more comprehensive mechanism for specifying the laterality of the body part(s) being examined.
Series Date | (0008,0021) | 3 | Date the Series started.
Series Time | (0008,0031) | 3 | Time the Series started.
Performing Physician's Name | (0008,1050) | 3 | Name of the physician(s) administering the Series.
Performing Physician Identification Sequence | (0008,1052) | 3 | 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.
>Include Table 10-1 “Person Identification Macro Attributes Description” |
Protocol Name | (0018,1030) | 3 | User-defined description of the conditions under which the Series was performed. ### Note This attribute conveys series-specific protocol identification and may or may not be identical to the one presented in the Performed Protocol Code Sequence (0040,0260).
Referenced Defined Protocol Sequence | (0018,990C) | 1C | Defined Procedure Protocol SOP Instance(s) that were used to create Instances in this Series. Required if this instance is a Performed Procedure Protocol that resulted from a Defined Procedure Protocol. May be present otherwise. One or more Items shall be included in this Sequence. ### Note Multiple items in this sequence may represent a group case where several Defined Procedure Protocols were performed together as a single Performed Procedure Protocol.
>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Referenced Performed Protocol Sequence | (0018,990D) | 1C | Uniquely identifies the Performed Procedure Protocol SOP Instance(s) that describe the conditions by which this Series was generated. Required if a related Performed Procedure Protocol SOP Instance was created. One or more Items shall be included in this Sequence. ### Note If the acquisition and reconstruction were recorded in separate Performed Procedure Protocol SOP Instances, it is recommended to reference both. However, it is not intended that this sequence reference Defined or prior Performed Protocol SOP Instances on which the current Performed Procedure Protocol SOP Instance was based. Such references may be found inside the current Performed Procedure Protocol SOP Instance itself.
>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Series Description | (0008,103E) | 3 | Description of the Series
Series Description Code Sequence | (0008,103F) | 3 | A coded description of the Series. Only a single Item is permitted in this Sequence.
>Include Table 8.8-1 “Code Sequence Macro Attributes” | No Baseline CID is defined.
Operators' Name | (0008,1070) | 3 | Name(s) of the operator(s) supporting the Series.
Operator Identification Sequence | (0008,1072) | 3 | 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.
>Include Table 10-1 “Person Identification Macro Attributes Description”
Referenced Performed Procedure Step Sequence | (0008,1111) | 3 | Uniquely identifies the Performed Procedure Step SOP Instance to which the Series is related. Only a single Item is permitted in this Sequence.
>Include Table 10-11 “SOP Instance Reference Macro Attributes” |
Related Series Sequence | (0008,1250) | 3 | Identification of Series significantly related to this Series. One or more Items are permitted in this Sequence. ### Note For example, for a combined CT and PET acquisition, the CT images and PET images would be in separate series that could cross-reference each other with multiple purpose of reference codes meaning same anatomy, simultaneously acquired and same indication. The related series may have different Frames of Reference and hence require some sort of registration before spatial coordinates can be directly compared. This attribute is not intended for conveying localizer reference information, for which Referenced Image Sequence (0008,1140) should be used.
>Study Instance UID | (0020,000D) | 1 | Instance UID of Study to which the related Series belongs
>Series Instance UID | (0020,000E) | 1 | Instance UID of Related Series
>Purpose of Reference Code Sequence | (0040,A170) | 2 | 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.
>>Include Table 8.8-1 “Code Sequence Macro Attributes” | Defined CID 7210 “Related Series Purposes of Reference”.
Body Part Examined | (0018,0015) | 3 | 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 ### Note Some IODs support the Anatomic Region Sequence (0008,2218), which can provide a more comprehensive mechanism for specifying the body part being examined.
Patient Position | (0018,5100) | 2C | 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.
Smallest Pixel Value in Series | (0028,0108) | 3 | The minimum value of all images in this Series.
Largest Pixel Value in Series | (0028,0109) | 3 | The maximum value of all images in this Series.
Request Attributes Sequence | (0040,0275) | 3 | Sequence that contains attributes from the Imaging Service Request. One or more Items are permitted in this Sequence.
>Include Table 10-9 “Request Attributes Macro Attributes” | No Baseline CID is defined.
Include Table 10-16 “Performed Procedure Step Summary Macro Attributes” | No Baseline CID is defined.
Anatomical Orientation Type | (0010,2210) | 1C | The anatomical orientation type used in instances generated by this equipment. Enumerated Values: BIPED QUADRUPED Required if the patient is an animal 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. ### Note If this Attribute is not present, the default human standard anatomical position is used to define the patient orientation of projection images and the patient coordinate system of cross-sectional images.

### Note

1. 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.

2. 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.

##### C.7.3.1.1 General Series Attribute Descriptions

###### C.7.3.1.1.1 Modality

Defined Terms:

AR

  Autorefraction

ASMT

  Content Assessment Results

AU

  Audio

BDUS

  Bone Densitometry (ultrasound)

BI

  Biomagnetic imaging

BMD

  Bone Densitometry (X-Ray)

CR

  Computed Radiography

CT

  Computed Tomography

CTPROTOCOL

  CT Protocol (Performed)

DG

  Diaphanography

DOC

  Document

DX

  Digital Radiography

ECG

  Electrocardiography

EPS

  Cardiac Electrophysiology

ES

  Endoscopy

FID

  Fiducials

GM

  General Microscopy

HC

  Hard Copy

HD

  Hemodynamic Waveform

IO

  Intra-Oral Radiography

IOL

  Intraocular Lens Data

IVOCT

  Intravascular Optical Coherence Tomography

IVUS

  Intravascular Ultrasound

KER

  Keratometry

KO

  Key Object Selection

LEN

  Lensometry

LS

  Laser surface scan

MG

  Mammography

MR

  Magnetic Resonance

NM

  Nuclear Medicine

OAM

  Ophthalmic Axial Measurements

OCT

  Optical Coherence Tomography (non-Ophthalmic)

OP

  Ophthalmic Photography

OPM

  Ophthalmic Mapping

OPT

  Ophthalmic Tomography

OPV

  Ophthalmic Visual Field

OSS

  Optical Surface Scan

OT

  Other

PLAN

  Plan

PR

  Presentation State

PT

  Positron emission tomography (PET)

PX

  Panoramic X-Ray

REG

  Registration

RESP

  Respiratory Waveform

RF

  Radio Fluoroscopy

RG

  Radiographic imaging (conventional film/screen)

RTDOSE

  Radiotherapy Dose

RTIMAGE

  Radiotherapy Image

RTPLAN

  Radiotherapy Plan

RTRECORD

  RT Treatment Record

RTSTRUCT

  Radiotherapy Structure Set

RWV

  Real World Value Map

SEG

  Segmentation

SM

  Slide Microscopy

SMR

  Stereometric Relationship

SR

  SR Document

SRF

  Subjective Refraction

STAIN

  Automated Slide Stainer

TG

  Thermography

US

  Ultrasound

VA

  Visual Acuity

XA

  X-Ray Angiography

XC

  External-camera Photography

Retired Defined Terms:

AS

  Angioscopy

CD

  Color flow Doppler

CF

  Cinefluorography

CP

  Culposcopy

CS

  Cystoscopy

DD

  Duplex Doppler

DF

  Digital fluoroscopy

DM

  Digital microscopy

DS

  Digital Subtraction Angiography

EC

  Echocardiography

FA

  Fluorescein angiography

FS

  Fundoscopy

LP

  Laparoscopy

MA

  Magnetic resonance angiography

MS

  Magnetic resonance spectroscopy

OPR

  Ophthalmic Refraction

ST

  Single-photon emission computed tomography (SPECT)

VF

  Videofluorography

### Note

1. The XA modality incorporates the retired modality DS.

2. The RF modality incorporates the retired modalities CF, DF, VF.

3. 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 XA IOD may list the RF modality when an RF implementation produces an XA object.

4. The MR modality incorporates the retired modalities MA and MS.

5. The US modality incorporates the retired modalities EC, CD, and DD.

6. The NM modality incorporates the retired modality ST.

###### C.7.3.1.1.2 Patient Position

Patient Position (0018,5100) specifies the position 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.

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 Coordinate System to the machine.

### Note

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). 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.

Defined Terms:

HFP

  Head First-Prone

HFS

  Head First-Supine

HFDR

  Head First-Decubitus Right

HFDL

  Head First-Decubitus Left

FFDR

  Feet First-Decubitus Right

FFDL

  Feet First-Decubitus Left

FFP

  Feet First-Prone

FFS

  Feet First-Supine

LFP

  Left First-Prone

LFS

  Left First-Supine

RFP

  Right First-Prone

RFS

  Right First-Supine

AFDR

  Anterior First-Decubitus Right

AFDL

  Anterior First-Decubitus Left

PFDR

  Posterior First-Decubitus Right

PFDL

  Posterior First-Decubitus Left

### Note

1. 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.

2. There are no decubitus variants of left or right first, since for imaging equipment that is aligned horizontally with respect to gravity the patient cannot be both decubitus and have the left or right side towards the front of the imaging equipment.

3. There are no prone or supine variants of anterior or posterior first, since for imaging equipment that is aligned horizontally with respect to gravity the patient cannot be prone or supine and have the anterior or posterior side towards the front of the imaging equipment.

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.7.3.1.1.2-1. Representation of the Eight Different Patient Positions on the X-Ray Table

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

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DICOM PS3.3 2018a - Information Object Definitions