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DICOM PS3.17 2020a - Explanatory Information​

Page 221​

T Quantitative Analysis References​ (Informative)​

T.1 Definition of Left and Right in the Case of Quantitative Arterial Analysis​

Proximal

L

Distal

R

Diameter

(mm)

4.27

1.01

Proximal Distal

Figure T.1-1. Definition of Left and Right in the Case of Quantitative Arterial Analysis​

T.2 Definition of Diameter Symmetry with Arterial Plaques​

The Diameter Symmetry of a Stenosis is a parameter determining the symmetry in arterial plaque distribution.​

- Standard -​

Page 222​

DICOM PS3.17 2020a - Explanatory Information​

b

a

Figure T.2-1. Definition of Diameter Symmetry with Arterial Plaques​

The Symmetry Index is defined by: a / b where a is smaller or equal to than b. a and b are measured in the reconstructed artery at​ the position of the minimal luminal diameter.​

Possible values of symmetry range from 0 to 1, where 0 indicates complete asymmetry and 1 indicates complete symmetry.​

Reference: Quantitative coronary arteriography; physiological aspects, page 102-103 in: Reiber and Serruys, Quantitative coronary​ arteriography, 1991​

T.3 Wall Motion Regions​

T.3.1 Landmark Based Wall Motion Regions​

Landmark-based Wall Motion

Contributions of Regions to global Ejection Fraction (CREF)

 

 

 

 

 

 

 

 

 

 

 

 

4.9

3.5

 

 

 

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Post. Basal

 

 

 

 

 

 

 

4.0

3.0

 

 

 

 

 

 

 

Ant. Basal

 

 

 

 

22.7%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

19.9%

 

 

 

 

 

 

 

 

 

 

 

 

 

5.5

4.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5.9

6.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4.2

5.4

 

 

 

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

Segments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Segments

Diaphragmatic

 

 

 

 

 

 

 

2.9

4.4

 

 

 

 

 

 

 

Ant. Lateral

11-20

10.5%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

17.3%

1-10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.4

4.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.4

4.0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3.3

3.3

 

 

 

 

 

 

 

 

 

 

 

 

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Apical

 

 

 

 

 

 

 

1.9

1.9

 

 

 

 

 

 

 

 

 

 

 

 

7.1%

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

%

7

6

5

4

3

2

1

0

0

1

2

3

4

5

6

7

%

 

 

1

Segments 5 1-10

9

11

15

 

Segments

19

11-20

 

Figure T.3-1. Landmark Based Wall Motion Regions​

- Standard -​

DICOM PS3.17 2020a - Explanatory Information​

Page 223​

To compare the quantitative results with those provided by the usual visual interpretation, the left ventricular boundary is divided into​ 5 anatomical regions, denoted:​

•​Anterobasal.​

•​Anterolateral.​

•​Posterobasal.​

•​Diaphragmatic.​

•​Apical.​

T.3.2 Centerline Wall Motion Region​

Centerline Wall Motion

Figure T.3-2. Example of Centerline Wall Motion Template Usage​

Node​

Code Meaning of Concept Name​

Code Meaning or Example​

TID​

 

 

Value​

 

 

X.X​

Findings​

 

 

 

X.X.1​

Procedure Reported​

Centerline Wall Motion​

TID 3208​

 

 

 

Analysis​

 

 

X.X.2​

Contour Realignment​

Center of Gravity​

TID 3208​

 

X.X.3​

Normalized Chord Length​

5.0 %​

TID 300​

 

X.X.4​

Normalized Chord Length​

5.1 %​

TID 300​

 

X.X.5​

Normalized Chord Length​

5.3 %​

TID 300​

 

…​

…​

…​

…​

 

X.X.102​

Normalized Chord Length​

4.5 %​

TID 300​

 

X.X.103​

Threshold Value​

2​

TID 3208​

 

X.X.104​

Abnormal Region​

 

TID 3208​

 

X.X.104.1​

Cardiac Wall Motion​

Hypokinetic​

TID 3208​

 

X.X.104.2​

Circumferential Extend​

LAD Region​

TID 3208​

 

- Standard -​

Page 224​

DICOM PS3.17 2020a - Explanatory Information​

 

 

Node​

Code Meaning of Concept Name​

Code Meaning or Example​

TID​

 

 

Value​

 

 

X.X.104.3​

First Chord of Abnormal Region​

66​

TID 3208​

 

X.X.104.4​

Last Chord of Abnormal Region​

76​

TID 3208​

 

X.X.104.5​

Cardiac Wall Motion​

Hypokinetic​

TID 3208​

 

X.X.104.6​

Circumferential Extend​

RCA Region​

TID 3208​

 

X.X.104.7​

First Chord of Abnormal Region​

66​

TID 3208​

 

X.X.104.8​

Last Chord of Abnormal Region​

76​

TID 3208​

 

X.X.104.9​

Cardiac Wall Motion​

Hyperkinetic​

TID 3208​

 

X.X.104.10​

Circumferential Extend​

LAD Region​

TID 3208​

 

X.X.104.11​

First Chord of Abnormal Region​

14​

TID 3208​

 

X.X.104.12​

Last Chord of Abnormal Region​

48​

TID 3208​

 

X.X.104.13​

Cardiac Wall Motion​

Hyperkinetic​

TID 3208​

 

X.X.104.14​

Circumferential Extend​

RCA Region​

TID 3208​

 

X.X.104.15​

First Chord of Abnormal Region​

25​

TID 3208​

 

X.X.104.16​

Last Chord of Abnormal Region​

48​

TID 3208​

 

X.X.104.17​

Cardiac Wall Motion​

Akinetic​

TID 3208​

 

X.X.104.18​

Circumferential Extend​

LAD Region​

TID 3208​

 

X.X.104.19​

First Chord of Abnormal Region​

69​

TID 3208​

 

X.X.104.20​

Last Chord of Abnormal Region​

71​

TID 3208​

 

X.X.104.21​

Cardiac Wall Motion​

Akinetic​

TID 3208​

 

X.X.104.22​

Circumferential Extend​

RCA Region​

TID 3208​

 

X.X.104.23​

First Chord of Abnormal Region​

69​

TID 3208​

 

X.X.104.24​

Last Chord of Abnormal Region​

71​

TID 3208​

 

X.X.105​

Regional Abnormal Wall Motion​

 

TID 3208​

 

X.X.105.1​

Finding Site​

Single LAD Region in RAO​TID 3208​

 

 

 

Projection​

 

 

X.X.105.2​

Territory Region Severity​

6.6​

TID 300​

 

X.X.105.2.1​

Cardiac Wall Motion​

Hypokinetic​

TID 300​

 

X.X.105.3​

Opposite Region Severity​

3.1​

TID 300​

 

X.X.105.3.1​

Cardiac Wall Motion​

Hyperkinetic​

TID 300​

 

X.X.105.4​

Finding Site​

Single RCA Region in RAO​TID 3208​

 

 

 

Projection​

 

 

X.X.105.5​

Territory Region Severity​

2.6​

TID 300​

 

X.X.105.5.1​

Cardiac Wall Motion​

Hyperkinetic​

TID 300​

 

X.X.105.6​

Opposite Region Severity​

7.6​

TID 300​

 

X.X.105.6.1​

Cardiac Wall Motion​

Hypokinetic​

TID 300​

 

X.X.105.7​

Finding Site​

Multiple LAD Region in RAO​TID 3208​

 

 

 

Projection​

 

 

X.X.105.8​

Territory Region Severity​

7.1​

TID 300​

 

X.X.105.8.1​

Cardiac Wall Motion​

Hyperkinetic​

TID 300​

 

X.X.105.9​

Opposite Region Severity​

2.9​

TID 300​

 

X.X.105.9.1​

Cardiac Wall Motion​

Hyperkinetic​

TID 300​

 

- Standard -​

 

DICOM PS3.17 2020a - Explanatory Information​

 

Page 225​

Node​

Code Meaning of Concept Name​

Code Meaning or Example​

TID​

 

 

 

 

Value​

 

 

X.X.105.10​

Finding Site​

 

 

MultipleRCAinRegionRAO​TID 3208​

 

 

 

 

 

Projection​

 

 

X.X.105.11​

Territory Region Severity​

2.9​

TID 300​

 

X.X.105.11.1​

Cardiac Wall Motion​

 

Hypokinetic​

TID 300​

 

X.X.105.12​

Opposite Region Severity​

7.1​

TID 300​

 

X.X.105.12.1​

Cardiac Wall Motion​

 

Hyperkinetic​

TID 300​

 

X.X 106​

…​

 

 

…​

TID 3208​

 

T.3.4 Radial Based Wall Motion Region​

 

 

 

 

 

 

Radial-based Wall Motion

 

 

 

Mean Motion

 

 

 

 

 

 

1. Antero-basal

:

33%

 

 

 

 

2. Antero-lateral

:

39%

 

 

 

 

3. Apical

:

17%

1

 

 

4.Diaphragmatic : 26%

5.Postero-basal : 30%

2

5

4

3

Figure T.3-3. Radial Based Wall Motion Region​

T.4 Quantitative Arterial Analysis Reference Method​

Defined Terms:​

•​Computer Calculated Reference.​

•​Interpolated Local Reference.​

•​Mean Local Reference.​

T.4.1 Computer Calculated Reference​

Thecomputer-definedobstructionanalysiscalculatesthereconstructiondiameterbasedonthediametersoutsidethestenoticsegment.​ This method is completely automated and user independent. The reconstructed diameter represents the diameters of the artery had​ the obstruction not been present.​

The proximal and distal borders of the stenotic segment are automatically calculated.​

The difference between the detected contour and the reconstructed contour inside the reconstructed diameter contour is considered​ to be the plaque.​

Based on the reconstruction diameter at the Minimum Luminal Diameter (MLD) position a reference diameter for the obstruction is​ defined.​

- Standard -​

Источник: https://studfile.net/preview/14585770/

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