DICOM PS3.16 2019b - Content Mapping Resource

TID 10033 Radiation Dose Estimate Methodology

This template includes the information specific to the organ dose calculation methodology used when estimating dose to individual organs, entire body or a phantom from imaging studies that use ionizing radiation.

Type:

Extensible

Order:

Non-Significant

Root:

No

Table TID 10033. Radiation Dose Estimate Methodology

NL

Rel with Parent

VT

Concept Name

VM

Req Type

Condition

Value Set Constraint

1

CONTAINER

EV (128415, DCM, "Radiation Dose Estimate Methodology")

1

M

2

>

CONTAINS

COMPOSITE

EV (128416, DCM, "SR Instance Used")

1-n

M

3

>>

HAS OBS CONTEXT

COMPOSITE

EV (128447, DCM, "Spatial Fiducials")

1-n

U

4

>>

HAS PROPERTIES

UIDREF

EV (128429, DCM, "Event UID Used")

1-n

MC

IFF some Events in the Structured Report were not used in calculating the dose.

5

>

CONTAINS

CONTAINER

EV (128500, DCM, "Patient Radiation Dose Model")

1

M

6

>>

CONTAINS

CODE

EV (128417, DCM, "Patient Model Type")

1

M

DCID 10064 “Patient Model Type”

7

>>

CONTAINS

CODE

EV (128420, DCM, "Radiation Transport Model Type")

1

M

DCID 10065 “Radiation Transport Model Type”

8

>>

CONTAINS

IMAGE

EV (128425, DCM, "Patient Radiation Dose Model Data")

1

UC

XOR Row 9, 10

9

>>

CONTAINS

COMPOSITE

EV (128425, DCM, "Patient Radiation Dose Model Data")

1

UC

XOR Row 8, 10

10

>>

CONTAINS

UIDREF

EV (128425, DCM, "Patient Radiation Dose Model Data")

1

UC

XOR Row 8, 9

11

>>

CONTAINS

TEXT

EV (128426, DCM, "Patient Radiation Dose Model Reference")

1

U

12

>>

CONTAINS

TEXT

EV (121106, DCM, "Comment")

1

U

13

>>

CONTAINS

CONTAINER

EV (128427, DCM, "Patient Model Demographics")

1

M

14

>>>

CONTAINS

NUM

EV (128428, DCM, "Model Minimum Age")

1

MC

IF model requires minimum age to be defined

DCID 7456 “Units of Measure for Age”

15

>>>

CONTAINS

NUM

EV (128430, DCM, "Model Maximum Age")

1

MC

IF model requires maximum age to be defined

DCID 7456 “Units of Measure for Age”

16

>>>

CONTAINS

CODE

EV (128437, DCM, "Model Patient Sex")

1

MC

IF model requires sex to be defined.

DCID 7455 “Sex”

17

>>>

CONTAINS

NUM

EV (128438, DCM, "Model Minimum Weight")

1

MC

IF model requires minimum weight to be defined

UNITS = EV (kg, UCUM, "kg")

18

>>>

CONTAINS

NUM

EV (128441, DCM, "Model Maximum Weight")

1

MC

IF model requires maximum weight to be defined

UNITS = EV (kg, UCUM, "kg")

19

>>>

CONTAINS

NUM

EV (128439, DCM, "Model Minimum Height")

1

MC

IF model requires minimum height to be defined

UNITS = EV (cm, UCUM, "cm")

20

>>>

CONTAINS

NUM

EV (128442, DCM, "Model Maximum Height")

1

MC

IF model requires maximum height to be defined

UNITS = EV (cm, UCUM, "cm")

21

>>

CONTAINS

CONTAINER

EV (128456, DCM, "Patient Model Registration")

1-n

UC

IF spatial information used from Radiation Dose SR or Patient Radiation Dose Model

22

>>>

CONTAINS

TEXT

EV (121106, DCM, "Comment")

1

U

23

>>>

CONTAINS

CODE

EV (128446, DCM, "Registration Method")

1

M

DCID 7100 “RCS Registration Method Type”

24

>>>

CONTAINS

COMPOSITE

EV (128444, DCM, "Spatial Registration Reference")

1

MC

IFF Row 8, 9 or 10 are present and Frame of Reference is defined

25

>

CONTAINS

CONTAINER

EV (128457, DCM, "X-Ray Beam Attenuator")

1-n

MC

IF attenuators used in estimation

26

>>

CONTAINS

CODE

EV (128458, DCM, "Attenuator Category")

1

M

DCID 10066 “Attenuator Category”

27

>>

CONTAINS

CODE

EV (128465, DCM, "Equivalent Attenuator Material")

1

M

DCID 10067 “Radiation Attenuator Materials”

28

>>

CONTAINS

NUM

EV (128469, DCM, "Equivalent Attenuator Thickness")

1

MC

IF the attenuator is of uniform thickness

UNITS = EV (mm, UCUM, "mm")

29

>>

CONTAINS

TEXT

EV (128468, DCM, "Attenuator Description")

1

U

30

>>

CONTAINS

CONTAINER

EV (128472, DCM, "X-Ray Beam Attenuator Model")

1

U

31

>>>

CONTAINS

CODE

EV (128420, DCM, "Radiation Transport Model Type")

1

U

DCID 10065 “Radiation Transport Model Type”

32

>>>

CONTAINS

TEXT

EV (128474, DCM, "X-Ray Beam Attenuator Model Reference")

1

U

33

>>>

CONTAINS

IMAGE

EV (128470, DCM, "X-Ray Attenuator Model Data")

1

UC

XOR Row 34, 35

34

>>>

CONTAINS

COMPOSITE

EV (128470, DCM, "X-Ray Attenuator Model Data")

1

UC

XOR Row 33, 35

35

>>>

CONTAINS

UIDREF

EV (128470, DCM, "X-Ray Attenuator Model Data")

1

UC

XOR Row 33, 34

36

>>

CONTAINS

CONTAINER

EV (128475, DCM, "X-Ray Beam Attenuator Model Registration")

1-n

U

37

>>>

CONTAINS

CODE

EV (128446, DCM, "Registration Method")

1

M

DCID 7100 “RCS Registration Method Type”

38

>>>

CONTAINS

TEXT

EV (121106, DCM, "Comment")

1

U

39

>>>

CONTAINS

COMPOSITE

EV (128444, DCM, "Spatial Registration Reference")

1

MC

IFF Row 33, 34 or 35 are present and Frame of Reference is defined

40

>

CONTAINS

CONTAINER

EV (128476, DCM, "Radiation Dose Estimate Method")

1-n

M

41

>>

CONTAINS

CODE

EV (128477, DCM, "Radiation Dose Estimate Method Type")

1

M

DCID 10068 “Estimate Method Types”

42

>>

CONTAINS

INCLUDE

DTID 10034 “Radiation Dose Estimate Parameters”

1

U

43

>>

CONTAINS

TEXT

EV (128482, DCM, "Radiation Dose Estimate Method Reference")

1

U


Content Item Descriptions

Row 2

Reference to Radiation Dose SRs or Radiopharmaceutical Administration Dose SRs used in the dose estimation. At least one such SR shall be referenced.

Note

If an SR does not exist, one must be created from estimated data.

Row 3

Reference to Fiducial SOP Instance that is used to register the Frame of Reference of the Radiation Dose SR.

Row 4

Reference to Irradiation Event UIDs or Radiopharmaceutical Event UIDs used in the Radiation Dose Estimate Methodology. This shall not be present if all events in the SR are used.

Rows 8 and 9

Reference to an instance that contains the model used when determining the radiation transport and deposition of energy within a patient, e.g., Surface Segmentation, Mesh, Parametric Map, etc.

Row 10

Reference to the series of images that contains the model used when determining the radiation transport and deposition of energy within a patient,, e.g., CT, MRI, etc.

Row 11

Reference to Publication describing the model used. If proprietary, reference the manufacturer model and version of software used.

Rows 13-20

Provide the demographics used in the patient model to estimate dose. These are not necessarily the demographics of the actual patient.

Row 21

Contains the Spatial Registration from each Source Radiation Dose SR Frame of Reference to the patient model Frame of Reference.

The Frame of Reference of patient model is defined by the space of model coordinates. The Frame of Reference of the Source Radiation Dose SR is the Frame of Reference of the acquired patient images. If no Frame of Reference of the acquired patient images exists, fiducials can be used to define Frame of Reference in both the equipment space, i.e., Source Radiation Dose SR, and the Patient Model space and referenced in Row 5.

If RCS Registration Method Type is Visual Alignment, it is assumed any translation/rotation information from the visual alignment is added to other alignment translation/rotation information and saved as a single Spatial Registration SOP Instance.

Row 25

One content item per attenuator. This can be information about materials in the radiation beam that is used in the estimation method and that may or may not have been included in the Radiation Dose SR. If the beam Attenuator (e.g., filter) is included here and is also in the Radiation Dose SR it is assumed additional information relative to the beam Attenuator material, shape, size, location was needed and this information was not in the Radiation Dose SR or the Radiation Dose SR information is considered incorrect or incomplete.

Row 27

The estimation method may use an equivalent material rather than the actual material, e.g., a plastic table may be use equivalent aluminum attenuation.

Row 28

If the attenuator is not uniform, a thickness may still be provided and it is expected that Row 29 (Attenuator Description) will clarify how that thickness was determined.

The specified equivalent material is identified in Row 27.

Row 29

The attenuator characteristics may be described here. If the attenuator thickness was not provided in Row 28, the attenuator may still be described.

Row 30

Complex attenuators are best described by a model.

Rows 33 and 34

Reference to an Instance that contains the model e.g., Surface Segmentation, Mesh, Parametric Map, etc.

Row 35

Reference to the Series of Images that contains the model, e.g., CT, MRI, etc. This can be a Spatial Fiducials SOP Instance.

Row 36

Contains the Spatial Registration from each Source Radiation Dose SR Frame of Reference to the X-Ray attenuator model Frame of Reference.

The Frame of Reference of the X-Ray attenuator model is defined by the space of model coordinates. The Frame of Reference of the Source Radiation Dose SR is the Frame of Reference of the acquired patient images. If no Frame of Reference of the acquired patient images exists, fiducials can be used to define Frame of Reference in both the equipment space, i.e., Source Radiation Dose SR, and X-Ray attenuator model space and referenced in Row 30.

If RCS Registration Method Type is Visual Alignment it is assumed any translation/rotation information from the visual alignment is added to other alignment translation/rotation information and saved as a single Spatial Registration SOP Instance.

Row 32 and 43

Provide name of method, reference to a publication or the manufacturer model and version

DICOM PS3.16 2019b - Content Mapping Resource