DICOM PS3.3 2024d - Information Object Definitions |
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Table C.36.2.2.17-1 specifies the Attributes of the RT Tolerance Set Macro, which contain information describing the maximum differences between planned and delivered values. This information is used in the context of delivery of the RT Radiation Set. If the absolute difference between a planned and delivered value exceeds the tolerance value, then it is expected that the delivery of the RT Radiation Set will be inhibited unless an authorized operator confirms that the tolerance may be exceeded.
Table C.36.2.2.17-1. RT Tolerance Set Macro Attributes
Tolerance values representing the allowed difference between the planned and actual values. The Selector Attribute Macro identifies the Attributes for which the tolerances are specified. Required if a tolerance value is specified for at least one Attribute which can be referenced by the Selector Attribute Macro. |
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Maximum permitted difference between the planned and the delivered value. Units are those specified for the corresponding Attribute referenced by the Selector Attribute Macro. |
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Tolerance values for Patient Support devices. Required if Patient Support Position Specification Method (300A,065C) does not equal ABSENT. One or more Items shall be included in this Sequence if Patient Support Position Specification Method (300A,065C) equals DEVICE_SPECIFIC. Only one Item shall be included in this Sequence if Patient Support Position Specification Method (300A,065C) equals GLOBAL. |
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The value of Device Index (3010,0039) in Patient Support Devices Sequence (300A,0686) corresponding to the Patient Support Device in use. Required if Patient Support Position Specification Method (300A,065C) equals DEVICE_SPECIFIC. |
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Index defining the order in which the Items in the Patient Support Position Device Tolerance Sequence (300A,0660) are applied. The value shall start at 1 and increase monotonically by 1. Required if Patient Support Position Specification Method (300A,065C) equals DEVICE_SPECIFIC. See Section 10.40.1. |
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Index defining the order in which the Items in the Patient Support Position Tolerance Sequence (300A,062D) are applied. The value shall start at 1 and increase monotonically by 1. Required if Patient Support Position Specification Method (300A,065C) equals DEVICE_SPECIFIC. See Section 10.40.1. |
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>>Include Table 10-2 “Content Item Macro Attributes”. |
BTID 15302 “Patient Support Position Parameters”. Content items shall use UCUM units of mm and degrees where applicable. |
The Attribute Tolerance Values Sequence (300A,062B) allows for the reference to any numerical parameter in an RT Radiation IOD. The RT Tolerance Set Macro is invoked to specify a tolerance value for this parameter. The reference specification is conveyed by the Selector Attribute Macro, which allows reference to a tag on any level of nested Sequences, and to refer to specific Items in the Sequence. The unit of the tolerance value is the unit as specified by the data element tag referenced in the Selector Attribute (0072,0026).
When describing a tolerance for a specific patient support position value, the patient support device parameter is defined using the same code used in the Section 10.40 Patient Support Position Macro.
DICOM PS3.3 2024d - Information Object Definitions |
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