DICOM PS3.20 2018d - Imaging Reports using HL7 Clinical Document Architecture

9.4 Comparison Study (Current)
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## 9.4 Comparison Study

Template​ID | 1.2.840.10008.9.4
Name | Comparison Study
Effective Date | 2015/03/24
Version Label | DICOM-20150324
Status | Active
Description | Documentation of a prior Imaging Procedure to which the current images were compared
Classification | CDA Section Level
Relationships | Included in 7.1 Imaging Report
Context | parent node
Open/Closed | Open
Revision History | DICOM-20150324: Initial version

Business Name | Nest Level | Element/​Attribute | Card | Elem/Attr Conf | Data Type | Value Conf | Value | Subsidiary Template
--- | --- | --- | --- | --- | --- | --- | --- | ---
Comparison​Study |  | section | 1..1 | SHALL |  |  |  |
| > | template​Id | 1..1 | SHALL | II |  |  |
| >@ | @root | 1..1 | SHALL | UID | SHALL | 1.2.840.10008.9.4 |
| > | id | 1..* | SHALL | II |  |  |
| > | code | 1..1 | SHALL | CD | SHALL | (18834-2, LOINC, "Radiology Comparison study") |
Title | > | title | 1..1 | SHALL | ST |  |  |
Text | > | text | 1..1 | COND | ED |  |  | 9.1.1 Section Text 1.2.840.10008.9.19
| > | entry | 0..* | MAY |  |  |  |
Procedure​Technique | >> | procedure | 1..1 | SHALL |  |  |  | 10.4 Procedure Technique 1.2.840.10008.9.14
| > | entry | 0..* | MAY |  |  |  |
Study[*] | >> | act | 1..1 | SHALL |  |  |  | 10.6 Study Act 1.2.840.10008.9.16
| > |  | 0..1 | MAY |  |  |  | 9.1.2 General Section Entries 1.2.840.10008.9.23

Example 9.4-1. Comparison study section example

    <section classCode="DOCSECT" moodCode="EVN">
        <templateId root="1.2.840.10008.9.4"/>
        <id root="1.2.840.10213.2.62.994056444785528.1142893564536542805"/>
        <code code="18834-2" codeSystem="2.16.840.1.113883.6.1"
            codeSystemName="LOINC" displayName="Radiology Comparison Study"/>
        <title>Comparison Study</title>
        <text>A prior CT with contrast performed on May 7, 2012, showed that ...</text>
        <! ---see examples for other sections/entries />
    </section>

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DICOM PS3.20 2018d - Imaging Reports using HL7 Clinical Document Architecture