The Templates that comprise the X-Ray Radiation Dose SR are interconnected as in Figure A-14.
This Template defines a container (the root) with subsidiary Content Items, each of which represents a single projection X-Ray irradiation event entry or plane-specific dose accumulations. There is a defined recording observer (the system or person responsible for recording the log, generally the system). A Biplane irradiation event will be recorded as two individual events, one for each plane. Accumulated values will be kept separate for each plane.
Table TID 10001. Projection X-Ray Radiation Dose
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$Plane = EV (113622, DCM, "Single Plane") |
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$Plane = EV (113620, DCM, "Plane A") |
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$Plane = EV (113621, DCM, "Plane B") |
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IF any of the values of TID (10001) Row 18 are not (113858, DCM, "MPPS Content"), (113866, DCM, "Copied From Image Attributes") or (113867, DCM, "Computed From Image Attributes") |
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$PersonProcedureRole = EV (113850, DCM, "Irradiation Authorizing") |
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"Projection X-Ray" refers to procedures performed on either integrated equipment (where information is passed between the X-Ray source (generator and tube), detector, and mechanical systems), or non-integrated equipment (where data might not be available for one or more components such as cassette-based systems). The data availability can be described in Rows 8, 9 and 10. The specific type of equipment can be described in Row 4. The coded term for "Mammography" is intended to encompass all types of projection X-Ray imaging of the breast. NoteMammography studies are distinguished by a different value in this Content Item, Angiography studies are distinguished by the Irradiation Event Type Content Item = Fluoroscopy, CR/DR studies are distinguished by one or more of the Data Availability Flags = No, and CT studies are distinguished by the use of a different Template. |
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The observer context may include both a Person Observer identification, as well as the identity of the equipment providing the values for the irradiation event (Device Observer identification), if not inherited. |
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A value of "No" indicates that details associated with the X-Ray Detector are not available to the device generating this report. For example, an X-Ray Source system might lack any communication with the associated cassette-based X-Ray detector or any method of entering such information. A value of "Yes" or the absence of this row means that the details are available. |
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A value of "No" indicates that details associated with the X-Ray Source are not available to the device generating this report. For example, a cassette-based X-Ray detector might lack any communication with the associated X-Ray Source or any method of entering such information. A value of "Yes" or the absence of this row means that the details are available. |
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A value of "No" indicates that details associated with the Gantry and/or Table are not available to the device generating this report. For example, a cassette-based X-Ray detector might lack any communication with the associated gantry/table or any method of entering such information. A value of "Yes" or the absence of this row means that the details are available. |
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Cassette-based X-Ray systems should consider themselves to be Single Plane systems. |
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Details of the underlying irradiation events. If Row 18 has a value of "MPPS Content" then a TID 10003 “Irradiation Event X-Ray Data” item may be generated for each item in the MPPS Exposure Dose Sequence (0040,030E), but since this is an optional element in MPPS, if it is absent, empty or incomplete, there may be no irradiation event level information available. Alternatively, the information may be copied or computed from the images. |
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The Dose Image references a graphic representation of the radiation dose distribution. This may be a Secondary Capture scan of a dosimetry film. |
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The physician responsible for determining that the irradiating procedure was appropriate for the indications. The value may come from Requesting Physician (0032,1032), Requesting Physician Identification Sequence (0032,1031) or somewhere else based on hospital policies. |
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The primary source of information from which this dose object was constructed. The Source of Dose Information (Row 18) is independent of the Scope Of Accumulation (Row 6); e.g., it would be typical to have a scope of (113016, DCM, "Performed Procedure Step"), but a source of (113856, DCM, "Automated Data Collection") rather than (113858, DCM, "MPPS Content"). |