CR ImageCIOD
PatientMModule - Patient
Clinical Trial SubjectUModule - Patient
General StudyMModule - Study
Patient StudyUModule - Study
Clinical Trial StudyUModule - Study
General SeriesMModule - Series
(0008,0021) Series Date3Date
(0008,0031) Series Time3Time
(0008,0060) Modality1Code String
(0008,103E) Series Description3Long String
(0008,103F) Series Description Code Sequence3Sequence
(0008,1050) Performing Physician's Name3Person Name
(0008,1052) Performing Physician Identification Sequence3Sequence
(0008,1070) Operators' Name3Person Name
(0008,1072) Operator Identification Sequence3Sequence
(0008,1111) Referenced Performed Procedure Step Sequence3Sequence
(0008,1250) Related Series Sequence3Sequence
(0010,2210) Anatomical Orientation Type1CCode String
(0018,0015) Body Part Examined3Code String
(0018,1030) Protocol Name3Long String
(0018,5100) Patient Position2CCode String
(0018,990C) Referenced Defined Protocol Sequence1CSequence
(0018,990D) Referenced Performed Protocol Sequence1CSequence
(0020,000E) Series Instance UID1Unique Identifier
(0020,0011) Series Number2Integer String
(0020,0060) Laterality2CCode String
(0028,0108) Smallest Pixel Value in Series3US or SS
(0028,0109) Largest Pixel Value in Series3US or SS
(0040,0244) Performed Procedure Step Start Date3Date
(0040,0245) Performed Procedure Step Start Time3Time
(0040,0250) Performed Procedure Step End Date3Date
(0040,0251) Performed Procedure Step End Time3Time
(0040,0253) Performed Procedure Step ID3Short String
(0040,0254) Performed Procedure Step Description3Long String
(0040,0260) Performed Protocol Code Sequence3Sequence
(0040,0275) Request Attributes Sequence3Sequence
(0040,0280) Comments on the Performed Procedure Step3Short Text
CR SeriesMModule - Series
Clinical Trial SeriesUModule - Series
General EquipmentMModule - Equipment
General ImageMModule - Image
General ReferenceUModule - Image
Image PixelMModule - Image
Contrast/BolusCModule - Image
Display ShutterUModule - Image
DeviceUModule - Image
SpecimenUModule - Image
CR ImageMModule - Image
Overlay PlaneUModule - Image
Modality LUTUModule - Image
VOI LUTUModule - Image
SOP CommonMModule - Image
Common Instance ReferenceUModule - Image
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Key Object Selection DocumentCIOD
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Extensible SRCIOD
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Patient Radiation Dose Structured ReportCIOD
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Rendition Selection DocumentCIOD
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MR SpectroscopyCIOD
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Spatial RegistrationCIOD
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Ophthalmic Photography 8 Bit ImageCIOD
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Stereometric RelationshipCIOD
Hanging ProtocolCIOD
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Basic DirectoryCIOD

Built with by Innolitics, a team of medical imaging software developers.

Data synced with official DICOM standard on 12 May 2020. The DICOM Standard is under continuous maintenance, and the current official version is available at http://www.dicomstandard.org/current/. DICOM Parts 3, 4, and 6, © NEMA. Please note that the most recent PDF version of the standard is the official reference, and should checked when making technical decisions.

Patient Position Attribute

Tag(0018,5100)
TypeConditionally Required, Empty if Unknown (2C)
KeywordPatientPosition
Value Multiplicity1
Value RepresentationCode String (CS)

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.

Section C.7.3.1.1.2

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-Based 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