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(300A,0614) RT Accessory Holder Definition Sequence1CSequence
(0008,0070) Manufacturer2Long String
(0008,1090) Manufacturer's Model Name2Long String
(0018,1000) Device Serial Number2Long String
(0018,100A) UDI Sequence3Sequence
(0018,1020) Software Versions2Long String
(0018,1204) Date of Manufacture3Date
(0018,1205) Date of Installation3Date
(0050,0021) Long Device Description3Short Text
(300A,0602) Referenced Defined Device Index1CUnsigned Short
(300A,060D) RT Accessory Holder Water-Equivalent Thickness2Double
(300A,060E) Referenced RT Accessory Holder Device Index2CUnsigned Short
(300A,060F) RT Accessory Holder Slot Existence Flag1Code String
(300A,0610) RT Accessory Holder Slot Sequence1CSequence
(300A,0611) RT Accessory Holder Slot ID2CLong String
(300A,0613) RT Accessory Slot Distance2CDouble
(300A,0615) RT Accessory Device Slot ID2CLong String
(300A,0645) Beam Modifier Orientation Angle1Double
(3010,001A) Manufacturer's Model Version2Long String
(3010,001B) Device Alternate Identifier2Unlimited Characters
(3010,001C) Device Alternate Identifier Type1CCode String
(3010,001D) Device Alternate Identifier Format1CLong Text
(3010,002D) Device Label1Long String
(3010,002E) Device Type Code Sequence1Sequence
(3010,0039) Device Index1Unsigned Short
(3010,0043) Manufacturer's Device Identifier2Short Text
(300A,0641) Number of RT Beam Limiting Devices1CUnsigned Short
(300A,064D) RT Beam Limiting Device Definition Sequence1CSequence
(300A,0670) Number of RT Accessory Holders1CUnsigned Short
(300A,067B) Radiation GenerationMode Sequence1CSequence
(300A,0685) Number of Radiation GenerationModes1CUnsigned Short
Robotic-Arm PathMModule - RT Radiation
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Common Instance ReferenceMModule - RT Radiation
Radiotherapy Common InstanceMModule - RT Radiation
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Built with by Innolitics, a team of medical imaging software developers.

Data synced with official DICOM standard on 18 April 2024. 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.

Referenced Defined Device Index Attribute

Tag(300A,0602)
TypeConditionally Required (1C)
KeywordReferencedDefinedDeviceIndex
Value Multiplicity1
Value RepresentationUnsigned Short (US)

Device Index value that links the device defined by this Sequence Item to the corresponding device in an RT Radiation Instance. The device identification of the two devices may or may not be the same.

The value is the index of a device in the RT Accessory Holder Definition Sequence (300A,0614) within the single SOP Instance referenced by Referenced RT Instance Sequence (300A,0631).

Required if the Instance referenced in Referenced RT Instance Sequence (300A,0631) contains the device that corresponds to the device defined by this Sequence Item.

See Section C.36.2.2.19.1.5.

Section C.36.2.2.19.1.5

C.36.2.2.19.1.5 Referenced Defined Device Index

The Referenced Defined Device Index (300A,0602) provides the facility to relate devices from one Instance to the other. Device Macros such as the RT Beam Limiting Device Definition Macro are used in Sequences which list the devices used in the context of a SOP Instance. Each device is identified by the Device Index (3010,0039). These devices may be described in other related SOP Instances. The values of Device Index (3010,0039) are not required to be the same in different SOP Instances.

For example, an RT Radiation Instance may contain the RT Beam Limiting Device Definition Sequence (300A,064D), listing the Beam Limiting Devices to be used for treatment. A related RT Radiation Record Instance for the same type of delivery device will contain the same Sequences. However, the collection of devices used may not be the same:

E.g., the RT Radiation Instance may describe a treatment that contains three Items with the following indices:

However, the treatment may have been executed on a different machine which has the X-Jaws and the X-MLC, but a fixed collimator in the Y direction instead of the Y-Jaws. Therefore, the Y-Jaws will not be recorded as they have not been used. Also, the fixed collimator in Y direction is not recorded, as this is not a device which is part of the RT Beam Limiting Device Definition Sequence (300A,064D). The Referenced Defined Device Index (300A,0602) will then point to the indices in the referenced RT Radiation Instance to annotate which device in the RT Radiation Record corresponds to the device in the RT Radiation. In this case, the RT Radiation Record would contain the devices as listed in the following: