Файл: part16.pdf

DICOM PS3.16 2020a - Content Mapping Resource​

Page 1293​

Code Value​

Code Meaning​

Definition​

Notes​

122351​

Stent Diameter Ratio​

Stent diameter ratio = Minimum stent diameter /​

Maximum stent diameter, measured at the same cross​

section in the vessel. Stent diameters are measured​

through the center point of the stent, which is defined as​

the center of gravity of the stent area.​

122352​

EEM Diameter Ratio​

EEMdiameterratio=minimumEEMdiameter/maximum​

EEM diameter. Measured at the same cross section in​

the vessel.​

122354​

Plaque Burden​

Fractional area within the External Elastic Membrane​

(EEM) occupied by atheroma. Plaque Burden = (EEM​

area - vessel lumen cross-sectional area) / EEM area.​

122355​

Arc of Calcium​

AngularmeasurementofaCalciumdepositwiththeapex​

located at the center of the lumen, which is defined as​

the center of gravity of the lumen area.​

122356​

Soft plaque​

Plaque characterized by low density or echogenicity.​

122357​

In-Stent Neointima​

Abnormal thickening of the intima within the stented​

segment.​

122360​

True Lumen​

Lumen surrounded by all three layers of the​

vessel-intima, media, and adventitia.​

122361​

False Lumen​

Achannel,usuallyparalleltothetruelumen,whichdoes​

not communicate with the true lumen over a portion of​

its length.​

122363​

Plaque Rupture​

Plaque ulceration with a tear detected in a fibrous cap.​

122364​

Stent Gap​

Length of gap between two consecutive stents.​

122367​

T-1 Worst​

Worst stenosis - the stenosis with the smallest lumen​

size within a vessel segment.​

122368​

T-2 Secondary​

2nd most severe stenosis within a vessel segment.​

122369​

T-3 Secondary​

3rd most severe stenosis within a vessel segment.​

122370​

T-4 Secondary​

4th most severe stenosis within a vessel segment.​

122371​

EEM Volume​

External Elastic Membrane (EEM) volume measured​

withinaspecifiedregion.TheEEMisadiscreteinterface​

at the border between the media and the Adventitia.​

122372​

Lumen Volume​

Lumen volume measured within a specified region.​

122374​

In-Stent Neointimal Volume​

The amount of plaque between the lumen and stent,​

within the stent region; In-stent restenosis. In-Stent​

Neointimal Volume = Stent Volume - Lumen Volume.​

122375​

Native Plaque Volume​

The amount of plaque between the stent and the EEM,​

within the stent region. Native Plaque Volume = EEM​

Volume - Stent Volume.​

122376​

Total Plaque Volume​

TotalamountofplaquebetweentheEEMandtheLumen,​

over the entire region that is measured. Total Plaque​

Volume = EEM Volume - Lumen Volume.​

122380​

Proximal Reference​

Proximalreferencesegmentmeasurementsite.Typically​

the site with the largest lumen proximal to a stenosis but​

within the same segment (usually within 10 mm of the​

stenosis with no major intervening branches).​

122381​

Distal Reference​

Distal reference segment measurement site. Typically​

the site with the largest lumen distal to a stenosis but​

within the same segment (usually within 10 mm of the​

stenosis with no major intervening branches).​

DICOM PS3.16 2020a - Content Mapping Resource​

Page 1295​

Code Value​

Code Meaning​

Definition​

Notes​

122403​

For Attenuation Correction​

The referenced information was used to correct the data​

for differential attenuation through different anatomic​

tissue.​

122404​

Reconstructed​

Valueestimatedforavesselintheabsenceofastenosis.​

122405​

Algorithm Manufacturer​

Manufacturer of application used.​

122406​ Left Atrial Ejection Fraction by​Left Atrial Ejection Fraction by Angiography.​

Angiography​

122407​

Left Atrial ED Volume​

Left Atrial End Diastolic Volume.​

122408​

Left Atrial ES Volume​

Left Atrial End Systolic Volume.​

122410​

Contour Realignment​

Contour repositioning of End Diastolic relative to End​

Systolic contour.​

122411​

Threshold Value​

The minimum standard deviation to define the​

hypokinesis and hyperkinesis.​

122417​ Regional Abnormal Wall Motion​Report of differentiation of wall motion compared to​

normal.​

122421​

Calibration Object​

Object used for Calibration.​

122422​

Calibration Method​

Method used for Calibration.​

122423​

Calibration Object Size​

Size of calibration object.​

122428​

Area Length Method​

Method how long axis is positioned.​

122429​

Volume Method​

Model for cardiac chamber volume calculation.​

122430​

Reference Method​

Method to define original diameter of the artery.​

122431​

Regression Slope ED​

Relation between calculated End Diastolic volume and​

ventricular End Diastolic volume. The specific meaning​

is dependent on volume method used.​

122432​

Regression Offset ED​

CorrectionfactorforthecalculatedEndDiastolicvolume​

and ventricular End Diastolic volume. The specific​

meaning is dependent on volume method used.​

122433​

Regression Slope ES​

Relation between calculated End Systolic volume and​

ventricular End Systolic volume. The specific meaning​

is dependent on volume method used.​

122434​

Regression Offset ES​

Correction factor for the calculated End Systolic volume​

and ventricular End Systolic volume. The specific​

meaning is dependent on volume method used.​

122435​ Regression Volume Exponent​Exponent of volume in regression formula.​

122438​

Reference Points​

Container for spatial locations or coordinates used for​

calculation.​

122445​

Wall Thickness​

Average thickness of the chamber wall in the current​

view.​

122446​

Wall Volume​

Volume of the chamber wall estimated from the current​

view.​

122447​

Wall Mass​

Mass of the chamber wall (myocardium).​

122448​

Wall Stress​

Peak systolic stress of chamber wall.​

DICOM PS3.16 2020a - Content Mapping Resource​

Page 1297​

Code Value​

Code Meaning​

Definition​

Notes​

122472​ CFX Region in LAO Projection​Based on a total number of chords of 100 and LAO​

projection the range of chords belonging to this regional​

extent lies between 38 -74 (hypokinetic) and 75 - 100​

(hyperkinetic). [Sheehan, 1986].​

122473​

Circular Method​

Method based on assumption that the image object is​

circular.​

122474​

Densitometric Method​

Methodbasedonthegrayvaluedistributionoftheimage.​

122475​

Center of Gravity​

End Systolic contour realigned to End Diastolic contour​

based on the center of gravity.​

122476​

Long Axis Based​

End Systolic contour realigned to End Diastolic contour​

based on the mid point of the long axis. The long axis​

end points are defined as the posterior and apex.​

122477​

No Realignment​

No Contour Realignment applied.​

122480​ Vessel Lumen Cross-Sectional​Calculated Vessel Lumen Cross-Sectional Area based​

Area​

on the referenced method.​

122481​

Contour Start​

Location of the beginning of a contour.​

122482​

Contour End​

Location of the end of a contour.​

122485​

Sphere​

Spherevisibleinanimage,whichisusedasacalibration​

or marker object.​

122486​

Geometric Isocenter​

Object of interest in isocenter of image and pixel​

separation is calculated from geometric data.​

122487​

Geometric Non-Isocenter​

Object of interest not in isocenter of image and pixel​

separation is calculated from geometric data and out of​

isocenter distances.​

122488​

Calibration Object Used​

Object used for calibration. E.g., sphere.​

122489​

Curve Fitted Reference​

Applicationdependentmethodtocalculatethereference​

diameter based on the multiple diameter values.​

122490​

Interpolated Local Reference​

Application dependent method to calculate reference by​

interpolation, based on the diameter of two or more user​

defined reference positions.​

122491​

Mean Local Reference​

Applicationdependentmethodtocalculatebyaveraging​

thereference,basedonthediameterofoneormoreuser​

defined reference positions.​

122493​ Radial Based Wall Motion​

Method to calculate wall motion based on the lengths of​

Analysis​

the radials in the predefined regions [Ingels].​

122495​ RegionalContributiontoEjection​Contribution of Region to global Ejection factor based​

Fraction​

on radial or landmark based wall motion method.​

122496​

Radial Shortening​

The reduction of area between End Systolic and End​

Diastolic based on radial wall motion analysis.​

122497​ Landmark Based Wall Motion​ Method to calculate wall motion based on the move of​

Analysis​

landmarks on the wall [Slager].​

122498​ Slice Contribution to Ejection​

Contribution to the ejection fraction of a specific slice​

Fraction​

region [Slager].​

122499​ Frame to Frame Analysis​

Methodtocalculatevolumesofheartchambersforevery​

image in a range.​