DICOM PS3.17 2021e - Explanatory Information

UUUU Radiation Dose Structured Reporting (Informative)

This Annex contains information of the use of Radiation Dose Structured Reports, excluding Radiopharmaceutical RDSRs and Patient RDSRs.

UUUU.1 Cone Beam CT (CBCT) Enhanced RDSR in TID 10040

The following is a simple example of a CBCT acquisition. The device acquires data by rotating a source around a table. There are simple assumptions about the filtration and attenuators present. Many optional entries, particularly legacy dose values, are not included in the interest of making it as simple as possible.

This example could apply to C-arm CBCT acquisitions, dental CBCT, on board imagers in RT, and standard CT scanners.

Table UUUU.1-1. Cone Beam CT (CBCT) Enhanced RDSR

Node

Code Meaning of Concept Name

Code or Example Value

TID

1

X-Ray Radiation Dose Report

Section TID 10040

1.1

Language of Content Item and Descendants

(en, IETF4646, "English")

Section TID 1204

1.2

Procedure reported

(702569007, SCT, "Cone Beam Acquisition")

Section TID 10040

1.2.1

Has Intent

(261004008, SCT, "Diagnostic Intent")

Section TID 10040

1.3

Observer Type

(121007, DCM, "Device")

Section TID 1002

1.4

Device Observer UID

2.999.1.2.3.4

Section TID 1004

1.5

Device Observer Manufacturer

Manufacturer X

Section TID 1004

1.6

Device Observer Model Name

Model Y

Section TID 1004

1.7

Device Observer Serial Number

123456789

Section TID 1004

1.8

Scope of Accumulation

(113014, DCM, "Study")

Section TID 10040

1.9

Accumulated Dose Data

Section TID 10041

1.9.1

Identification of the X-Ray Source

1

Section TID 10041

1.9.2

Reference Point Dosimetry

Section TID 10041

1.9.2.1

Reference Point Definition

(113860, DCM, "15cm from Isocenter toward Source")

Section TID 10041

1.9.2.2

Dose (RP) Total

85 mGy

Section TID 10041

1.10

Irradiation Event Summary Data

Section TID 10042

1.10.1

Irradiation Event UID

2.999.2.3.4

Section TID 10042

1.10.2

DateTime Started

20200101120000

Section TID 10042

1.10.3

DateTime Ended

20200101120030

Section TID 10042

1.10.4

Identification of the X-Ray Source

1

Section TID 10042

1.10.5

Irradiation Event Types

(113613, DCM, "Rotational Acquisition")

Section TID 10042

1.11

Irradiation Details

Section TID 10043

1.11.1

DateTime Started

20200101120000

Section TID 10043

1.11.2

DateTime Ended

20200101120030

Section TID 10043

1.11.3

Frame of Reference UID

2.999.1.2.3

Section TID 10043

1.11.4

RDSR Frame of Reference Origin

(130537, DCM, "Equipment Origin")

Section TID 10043

1.11.5

RDSR Frame of Reference Description

Equipment origin located on left-most, rear-most corner of gantry support when viewing equipment from the front. Y-axis is anti-gravity direction. Z-axis is along table travel direction into the gantry. X-axis is cross product of y and z axes (+y ⨯ +z).

Section TID 10043

1.11.6

Radiation Source Characteristics

Section TID 10044

1.11.6.1

DateTime Started

20200101120000

Section TID 10044

1.11.6.2

DateTime Ended

20200101120030

Section TID 10044

1.11.6.3

Identification of the X-Ray Source

1

Section TID 10044

1.11.6.4

Focal Spot Size

1.2 mm

Section TID 10044

1.11.6.5

Anode Target Material

(26194003, SCT, "Tungsten")

Section TID 10044

1.11.6.6

Attenuator Characteristics

Section TID 10044

1.11.6.6.1

Equivalent Attenuator Material

(12503006, SCT, "Aluminum")

Section TID 10044

1.11.6.6.2

Equivalent Attenuator Thickness

2.5 mm

Section TID 10044

1.11.6.6.2.1

Reported Value Type

(117362005, SCT, "Nominal")

Section TID 10044

1.11.7

Radiation Technique

Section TID 10045

1.11.7.1

DateTime Started

20200101120000

Section TID 10045

1.11.7.2

DateTime Ended

20200101120030

Section TID 10045

1.11.7.3

Identification of the X-Ray Source

1

Section TID 10045

1.11.7.4

KVP

100 kV

Section TID 10045

1.11.7.5

X-Ray Tube Current

DateTime Started

X-Ray Tube Current (mA)

20200101120000

100.0

20200101120005

150.0

20200101120010

200.0

20200101120015

150.0

20200101120020

100.0

20200101120025

150.0

Section TID 10045

1.11.8

Filtration

Section TID 10046

1.11.8.1

DateTime Started

20200101120000

Section TID 10046

1.11.8.2

DateTime Ended

20200101120030

Section TID 10046

1.11.8.3

Identification of the X-Ray Source

1

Section TID 10046

1.11.8.4

Attenuator Characteristics

Section TID 10055

1.11.8.4.1

Identification of the Attenuator

1

Section TID 10055

1.11.8.4.2

Attenuator Category

(113771, DCM, "X-Ray Filters")

Section TID 10055

1.11.8.4.3

Filter Material

(66925006, SCT, "Copper")

Section TID 10055

1.11.8.4.4

Filter Type

(113653, DCM, "Flat Filter")

Section TID 10055

1.11.8.4.5

X-Ray Filter Thickness

0.3 mm

Section TID 10055

1.11.9

Attenuators

Section TID 10047

1.11.9.1

DateTime Started

20200101120000

TID eRSDRT07

1.11.9.2

DateTime Ended

20200101120030

TID eRSDRT07

1.11.9.4

Attenuator Characteristics

Section TID 10055

1.11.9.4.1

Identification of the Attenuator

2

Section TID 10055

1.11.9.4.2

Attenuator Category

(128459, DCM, "Table")

Section TID 10055

1.11.9.4.3

Filter Material

(256501007, SCT, "Carbon Fiber")

Section TID 10055

1.11.9.4.4

Filter Type

(113650, DCM, "Strip Filter")

Section TID 10055

1.11.9.4.5

X-Ray Filter Thickness

30 mm

Section TID 10055

1.11.10

Radiation Output

Section TID 10048

1.11.10.1

DateTime Started

20200101120000

Section TID 10048

1.11.10.2

DateTime Ended

20200101120030

Section TID 10048

1.11.10.3

Identification of the X-Ray Source

1

Section TID 10048

1.11.10.4

Air Kerma at Output Measurement Point

DateTime Ended

Air Kerma at Output Measurement Point (mGy)

20200101120005

10.0

20200101120010

15.0

20200101120015

20.0

20200101120020

15.0

20200101120025

10.0

20200101120030

15.0

Section TID 10048

1.11.11

Radiation Field Area

Section TID 10049

1.11.11.1

DateTime Started

20200101120000

Section TID 10049

1.11.11.2

DateTime Ended

20200101120030

Section TID 10049

1.11.11.3

Identification of the X-Ray Source

1

Section TID 10049

1.11.11.4

Radiation Field Outline

SCOORD3D POLYGON

Section TID 10049

1.11.12

X-Ray Source Reference Coordinate System

Section TID 10050

1.11.12.1

DateTime Started

20200101120000

Section TID 10050

1.11.12.2

DateTime Ended

20200101120030

Section TID 10050

1.11.12.3

Identification of the X-Ray Source

1

Section TID 10050

1.11.12.4

Transformation Matrix

1.0

0.0

0.0

-40.0

0.0

1.0

0.0

20.0

0.0

0.0

1.0

-50.0

0.0

0.0

0.0

1.0

Section TID 10050

1.11.12.5

Center of Rotation

SCOORD3D POINT

Section TID 10050

1.11.12.6

Rotation Plane Normal Point

SCOORD3D POINT

Section TID 10050

1.11.12.7

Rotation Angle

DateTime Started

Rotation Angle (deg)

20200101120005

40.0

20200101120010

80.0

20200101120015

120.0

20200101120020

160.0

20200101120025

200.0

20200101120030

240.0

Section TID 10050

1.11.13

Beam Position

Section TID 10051

1.11.13.1

DateTime Started

20200101120000

Section TID 10051

1.11.13.2

DateTime Ended

20200101120030

Section TID 10051

1.11.13.3

Identification of the X-Ray Source

1

Section TID 10051

1.11.13.4

Output Measurement Point Position

SCOORD3D POINT

Section TID 10051

1.11.13.5

Reference Point Position

SCOORD3D POINT

Section TID 10051

1.11.13.6

X-Ray Beam Attenuator Model

Section TID 10051

1.11.13.6.1

Identification of the Attenuator

1

Section TID 10051

1.11.13.6.2

X-Ray Attenuator Model Data

2.999.3.4.5

Section TID 10051

1.11.13.6.6

Transformation Matrix

1.0

0.0

0.0

0.0

0.0

1.0

0.0

5.0

0.0

0.0

1.0

0.0

0.0

0.0

0.0

1.0

Section TID 10051

1.11.14

Attenuator Position

Section TID 10052

1.11.14.1

DateTime Started

20200101120000

Section TID 10052

1.11.14.2

DateTime Ended

20200101120030

Section TID 10052

1.11.14.3

X-Ray Beam Attenuator Model

1.11.14.3.1

Identification of the Attenuator

2

Section TID 10052

1.11.14.3.2

X-Ray Attenuator Model Data

2.999.4.5.6

Section TID 10052

1.11.14.3.3

Transformation Matrix

1.0

0.0

0.0

-40.0

0.0

1.0

0.0

60.0

0.0

0.0

1.0

-45.0

0.0

0.0

0.0

1.0

Section TID 10052

1.11.15

Procedure Characteristics

Section TID 10054

1.11.15.1

DateTime Started

20200101120000

Section TID 10054

1.11.15.2

DateTime Ended

20200101120030

Section TID 10054

1.11.15.3

Identification of the X-Ray Source

1

Section TID 10054

1.11.15.4

Acquisition Protocol

CBCT Acquisition

Section TID 10054

1.11.15.5

Patient Table Relationship

(102540008, SCT, "headfirst")

Section TID 10054

1.11.15.6

Patient Orientation

(102538003, SCT, "recumbent")

Section TID 10054

1.11.15.6.1

Patient Orientation Modifier

(40199007, SCT, "supine")

Section TID 10054

1.11.15.7

Distance Source to Detector

1200 mm

Section TID 10054

1.12

Source of Dose Information

(113856, DCM, "Automated Data Collection")

Section TID 10040


DICOM PS3.17 2021e - Explanatory Information