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Page 328​

 

DICOM PS3.16 2020a - Content Mapping Resource​

 

 

NL​ Rel with Parent​ VT​

ConceptName​ VM​ Req Type​ Condition​

Value Set Constraint​

3​

>​

R-SELECTED​

IMAGE​

1​

MC​

XOR row 2​

Shall reference an IMAGE​

 

 

FROM​

 

 

 

 

Content Item in the​

 

 

 

 

 

 

 

(111028, DCM, "Image​

 

 

 

 

 

 

 

Library")​

4​

 

 

SCOORD​

EV (111041,​ 1​

MC​

At least one of rows​

 

 

 

 

DCM,"Outline")​

 

1, 4 shall be present.​

5​

>​

SELECTED​

IMAGE​

1​

MC​

XOR row 6​

Shall reference the same​

 

 

FROM​

 

 

 

 

Content Item as row 2​

6​

>​

R-SELECTED​

IMAGE​

1​

MC​

XOR row 5​

Shall reference the same​

 

 

FROM​

 

 

 

 

Content Item as row 3​

TID 4108 Tracking Identifier​

This Template provides a means to identify an object for longitudinal tracking, potentially across multiple Structured Reports, over​ time.​

Type:​

Non-Extensible​

Order:​

Significant​

Root:​

No​

 

Table TID 4108. Tracking Identifier​

 

NL​Rel with​ VT​

Concept Name​

VM​Req Type​

Condition​

Value Set Constraint​

 

Parent​

 

 

 

 

 

 

1​

TEXT​

EV (112039, DCM,​

1​

MC​

At least one of row 1 or​A string of characters with​

 

 

"Tracking Identifier")​

 

 

2 shall be present.​

case being non-significant.​

 

 

 

 

 

 

 

Leading and trailing spaces​

 

 

 

 

 

 

 

and control characters are​

 

 

 

 

 

 

 

forbidden.​

2​

UIDREF​EV (112040, DCM,​

1​

MC​

At least one of row 1 or​

 

 

"Tracking Unique​

 

 

2 shall be present.​

 

 

 

Identifier")​

 

 

 

 

 

Content Item Descriptions​

 

Tracking Identifier​

A human readable identifier for longitudinal tracking, e.g., "Watchlist Nodule 1".​

Tracking Unique Identifier​

This is distinct from the Observation UID (0040,A171) that may be present in the Data Set for​

 

each Content Item, which identifies only a specific observation, not an object tracked over time,​

 

and each tracked object may have many observations.​

Colon CAD SR IOD Templates ​

The Templates that comprise the Colon CAD SR IOD are interconnected as in Figure A-9b. In Figure A-9b, '···' indicates possible​ recursive application of subordinate Templates.​

- Standard -​

DICOM PS3.16 2020a - Content Mapping Resource​

Page 329​

TID 4120

 

 

TID 4015

 

TID 4017

 

TID 4019

Colon CAD

 

 

Detections

 

Detection

 

CAD Algorithm

Document Root

 

 

Performed

 

Performed

 

Identification

 

 

 

TID 4016

 

TID 4018

 

TID 4019

 

 

 

Analyses

 

Analysis

 

CAD Algorithm

 

 

 

Performed

 

Performed

 

Identification

TID 1204

 

 

 

Language of

 

 

 

Content Item and

 

 

 

Descendants

 

 

 

TID 4121

TID 4125

 

TID 4125

Colon CAD

Composite

 

Composite

Findings Summary

Feature

 

Feature

TID 4122

TID 4127

TID 4108

TID 4019

CAD Common

Single Image

Tracking Identifier

CAD Algorithm

Image Properties

Finding

Identification

 

Entry

 

 

 

 

 

TID 4014

TID 4127

 

 

Image Quality

Single Image

 

 

Finding

 

 

 

 

 

TID 4022

TID 4022

 

 

CAD Observation

CAD Observation

 

 

Context

Context

 

 

TID 4019

TID 4108

 

 

CAD Algorithm

Tracking

 

 

Identification

Identifier

TID 4129

 

TID 4126

 

TID 4129

Colon CAD

 

Composite

 

Colon CAD

Geometry

 

Feature Body

 

Geometry

TID 4128

 

 

 

TID 4128

Colon CAD

Colon CAD

Descriptors

Descriptors

TID 300, 1400,

TID 300, 1400,

1401, 1402, 1406

1401, 1402, 1406

Measurement

Measurement

Figure A-9b. Colon CAD SR IOD Template Structure​

TID 4120 Colon CAD Document Root​

This Template forms the top of a content tree that allows a colon CAD device to describe the results of detection and analysis of colon​ evidence. This Template, together with its subordinate Templates, describes both the results for presentation to radiologists and​ partial product results for consumption by colon CAD devices in subsequent colon CAD reports.​

This Template defines a Container that contains the CAD results and summaries of the detection and analysis algorithms performed.​

The atomic CAD results of Single Image Findings and Composite Features are described in the Colon CAD Findings Summary sub-​ tree.​

The Summary of Detections and Summary of Analyses sub-trees gather lists of algorithms attempted, grouped by success/failure​ status. Algorithms not attempted are not mentioned in these sub-trees. This information forms the basis for understanding why a​ colon CAD report may produce no (or fewer than anticipated) results. Colon CAD results are constructed bottom-up, starting from​ Single Image Findings (see TID 4127 “Colon CAD Single Image Finding”), associated as Composite Features (see TID 4125 “Colon​ CAD Composite Feature”).​

See Figure SS.1-1 “Top Levels of Colon CAD SR Content Tree” in PS3.17.​

Type:​

Non-Extensible​

Order:​

Significant​

Root:​

Yes​

Table TID 4120. Colon CAD Document Root​

 

NL​RelwithParent​ VT​

Concept Name​

VM​

Req​ Condition​

Value Set​

 

 

 

 

Type​

Constraint​

1​

CONTAINER​EV (112220, DCM, "Colon​

1​

M​

Root node​

 

 

CAD Report")​

 

 

 

- Standard -​

Page 330​

 

DICOM PS3.16 2020a - Content Mapping Resource​

 

 

NL​RelwithParent​ VT​

Concept Name​

VM​

Req​

Condition​

Value Set​

 

 

 

 

 

 

Type​

 

Constraint​

2​

>​

HASCONCEPT​INCLUDE​

DTID 1204 “Language of​

1​

M​

 

 

 

 

MOD​

 

Content Item and​

 

 

 

 

 

 

 

 

Descendants”​

 

 

 

 

3​

>​

CONTAINS​

INCLUDE​

DTID 4122 “CAD Common​ 1-n​

M​

 

 

 

 

 

 

Image Properties Entry”​

 

 

 

 

4​

>​

CONTAINS​

INCLUDE​

DTID 4121 “Colon CAD​

1​

M​

 

 

 

 

 

 

Findings Summary”​

 

 

 

 

5​

>​

CONTAINS​

CODE​

EV (111064, DCM,​

1​

M​

 

DCID 6042 “Status​

 

 

 

 

"Summary of Detections")​

 

 

 

of Results”​

6​

>>​

INFERRED​

INCLUDE​

DTID4015“CADDetections​ 1​

MC​ Shall be present​ $DetectionCode =​

 

 

FROM​

 

Performed”​

 

 

unlessthevalueof​DCID 6201 “Colon​

 

 

 

 

 

 

 

row 5 is (111225,​Finding or Feature”​

 

 

 

 

 

 

 

DCM, "Not​

 

 

 

 

 

 

 

 

Attempted")​

 

7​

>​

CONTAINS​

CODE​

EV (111065, DCM,​

1​

M​

 

DCID 6042 “Status​

 

 

 

 

"Summary of Analyses")​

 

 

 

of Results”​

8​

>>​

INFERRED​

INCLUDE​

DTID 4016 “CAD Analyses​

1​

MC​ Shall be present​ $AnalysisCode =​

 

 

FROM​

 

Performed”​

 

 

unlessthevalueof​DCID6137“Typesof​

 

 

 

 

 

 

 

row 7 is (111225,​CAD Analysis”​

DCM, "Not​

Attempted")​

Content Item Descriptions​

Detections Performed​

Analyses Performed​

The "Detections Performed" and "Analyses Performed" sections of the Content Tree​ (TID 4120 “Colon CAD Document Root”, rows 6 and 8) together shall reference all​ ImageSOPInstancesincludedintheCurrentRequestedProcedureEvidenceSequence​ (0040,A375) attribute of the SR Document General module.​

TID 4121 Colon CAD Findings Summary​

ThecontentsofthisTemplatedescribethefindingsandaggregatefeaturesthatthecolonCADdevicedetectedforthecolonevidence​ presented. This Template forms the colon CAD results sub-tree of the Colon CAD Document Root (TID 4120 “Colon CAD Document​ Root”). The data from which the details are inferred are expressed in the Composite Features (see TID 4125 “Colon CAD Composite​ Feature”) and/or Single Image Findings (see TID 4127 “Colon CAD Single Image Finding”), of which there may be several.​

The sub-tree headed by this Template is illustrated in Figure F.1-2 “Example of CAD Processing and Findings Summary Sub-Tree​ of Chest CAD SR Content Tree” in PS3.17.​

Type:​

Non-Extensible​

Order:​

Significant​

Root:​

No​

Table TID 4121. Colon CAD Findings Summary​

 

NL​ Rel with Parent​ VT​

Concept Name​

VM​

Req​ Condition​Value Set Constraint​

 

 

 

 

 

 

Type​

 

1​

 

 

CODE​

EV (111017, DCM, "CAD​

1​

M​

DCID 6047 “CAD​

 

 

 

 

Processing and Findings​

 

 

Processing and​

 

 

 

 

Summary")​

 

 

Findings Summary”​

2​

>​

HAS​

CODE​

EV (112222, DCM, "Colon​

1​

U​

DCID 6200 “Colon​

 

 

PROPERTIES​

 

Overall Assessment")​

 

 

Overall Assessment”​

3​

>​

INFERRED​

INCLUDE​ DTID 4125 “Colon CAD​

1-n​

U​

 

 

 

FROM​

 

Composite Feature”​

 

 

 

- Standard -​

 

DICOM PS3.16 2020a - Content Mapping Resource​

Page 331​

NL​ Rel with Parent​ VT​

Concept Name​

VM​

Req​ Condition​Value Set Constraint​

 

 

 

 

Type​

 

4​ >​ INFERRED​

INCLUDE​ DTID 4127 “Colon CAD Single​ 1-n​

U​

 

FROM​

 

Image Finding”​

 

 

 

Content Item Descriptions​

 

 

 

 

CAD Processing and​

This code value is used to express if and why the Colon CAD Findings Summary sub-tree is empty.​

Findings Summary​

The Summary of Detections and Summary of Analyses sub-trees of the Document Root node contain​

 

detail about which (if any) algorithms succeeded or failed.​

 

If the code value indicates that there were no findings, then the code value can be used to determine​ whether colon CAD processing occurred successfully, without parsing the Summary of Detections and​ Summary of Analyses sub-trees.​

TID 4122 CAD Common Image Properties Entry​

Each instance of the CAD Common Image Properties Entry Template contains selected attributes for a set of parallel contiguous​ equally spaced slices (with identical properties) from which CAD findings are derived.​

Type:​

Extensible​

Order:​

Significant​

Root:​

No​

Table TID 4122. CAD Common Image Properties Entry​

 

NL​

Rel with​

VT​

Concept Name​

VM​ Req​ Condition​

Value Set Constraint​

 

 

Parent​

 

 

 

Type​

 

 

1​

 

 

CONTAINER​EV (112224, DCM,​

1​

M​

 

 

 

 

 

 

"Image Set Properties")​

 

 

 

 

2​

>​

CONTAINS​UIDREF​

EV (112227, DCM,​

1​

M​

 

 

 

 

 

 

"Frame of Reference​

 

 

 

 

 

 

 

 

UID")​

 

 

 

 

3​

>​

CONTAINS​UIDREF​

EV (110180, DCM,​

1​

M​

 

 

 

 

 

 

"Study Instance UID")​

 

 

 

 

4​

>​

CONTAINS​DATE​

EV (111060, DCM,​

1​

M​

Shall be taken from Study Date​

 

 

 

 

"Study Date")​

 

 

(0008,0020)intheImageInstances.​

5​

>​

CONTAINS​TIME​

EV (111061, DCM,​

1​

M​

Shall be taken from Study Time​

 

 

 

 

"Study Time")​

 

 

(0008,0030)intheImageInstances.​

6​

>​

CONTAINS​CODE​

EV (121139, DCM,​

1​

M​

Shall be taken from Modality​

 

 

 

 

"Modality")​

 

 

(0008,0060)intheImageInstances.​

7​

>​

CONTAINS​NUM​

EV (111026, DCM,​

1​

M​

Shall be taken from value 2 of Pixel​

 

 

 

 

"Horizontal Pixel​

 

 

Spacing (0028,0030) in the Image​

 

 

 

 

Spacing")​

 

 

Instances.​

 

 

 

 

 

 

 

UNITS = EV (mm/{pixel}, UCUM,​

 

 

 

 

 

 

 

"millimeters per pixel")​

8​

>​

CONTAINS​NUM​

EV (111066, DCM,​

1​

M​

Shall be taken from value 1 of Pixel​

 

 

 

 

"Vertical Pixel Spacing")​

 

 

Spacing (0028,0030) in the Image​

 

 

 

 

 

 

 

Instances.​

UNITS = EV (mm/{pixel}, UCUM,​ "millimeters per pixel")​

- Standard -​

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