Content Item DescriptionsRows 7, 8, 9The baseline context groups defined allow for generic intensity and, size and texture measurements, regardless of the geometry of the ROI (e.g., linear distance can be measured on volumes, or volume can be estimated from a linear distance), and being baseline, do not constrain the invoker from using other appropriate concepts specific to the application.Gray Level Co-occurrence Matrix MeasurementsType:ExtensibleVersion:2014111020171122

Gray Level Co-occurrence Matrix Measurements

Coding Scheme Designator

Code Value

Code Meaning

DCM

126060

Joint Entropy of GLCM

DCM

126061

EnergyRoot Angular Second Moment of GLCM

DCM

126062

HomogeneityInverse Difference Moment of GLCM

DCM

126063

Contrast of GLCM

DCM

126064

Dissimilarity of GLCM

DCM

126065

ASMAngular Second Moment of GLCM

DCM

126066

Correlation of GLCM

DCM

128781

Joint Maximum of GLCM

DCM

128782

Joint Average of GLCM

DCM

128783

Joint Variance of GLCM

DCM

128784

Difference Average of GLCM

DCM

128785

Difference Variance of GLCM

DCM

128786

Difference Entropy of GLCM

DCM

128787

Sum Average of GLCM

DCM

128788

Sum Variance of GLCM

DCM

128789

Sum Entropy of GLCM

DCM

128790

Inverse Difference of GLCM

DCM

128791

Inverse Difference Normalized of GLCM

DCM

128792

Inverse Difference Moment Normalized of GLCM

DCM

128793

Inverse Variance of GLCM

DCM

128794

Autocorrelation of GLCM

DCM

128795

Cluster Tendency of GLCM

DCM

128796

Cluster Shade of GLCM

DCM

128797

Cluster Prominence of GLCM

DCM

128798

First Measure of Information Correlation of GLCM

DCM

128799

Second Measure of Information Correlation of GLCM

<emphasis role="bold"><emphasis role="underline">Gray Level Run Length Based Features</emphasis></emphasis>Type:ExtensibleVersion:20171122

Gray Level Run Length Based Features

Coding Scheme Designator

Code Value

Code Meaning

DCM

128801

Short Runs Emphasis

DCM

128802

Long Runs Emphasis

DCM

128803

Low Gray Level Run Emphasis

DCM

128804

High Gray Level Run Emphasis

DCM

128805

Short Run Low Gray Level Emphasis

DCM

128806

Short Run High Gray Level Emphasis

DCM

128807

Long Run Low Gray Level Emphasis

DCM

128808

Long Run High Gray Level Emphasis

DCM

128809

Gray Level Nonuniformity in Runs

DCM

128810

Gray Level Nonuniformity in Runs Normalized

DCM

128811

Run Length Nonuniformity

DCM

128812

Run Length Nonuniformity Normalized

DCM

128813

Run Percentage

DCM

128814

Gray Level Variance in Runs

DCM

128815

Run Length Variance

DCM

128816

Run Entropy

<emphasis role="bold"><emphasis role="underline">Gray Level Size Zone Based Features</emphasis></emphasis>Type:ExtensibleVersion:20171122

Gray Level Size Zone Based Features

Coding Scheme Designator

Code Value

Code Meaning

DCM

128821

Small Zone Emphasis

DCM

128822

Large Zone Emphasis

DCM

128823

Low Gray Level Zone Emphasis

DCM

128824

High Gray Level Zone Emphasis

DCM

128825

Small Zone Low Gray Level Emphasis

DCM

128826

Small Zone High Gray Level Emphasis

DCM

128827

Large Zone Low Gray Level Emphasis

DCM

128828

Large Zone High Gray Level Emphasis

DCM

128829

Gray Level Nonuniformity of Zone Counts

DCM

128830

Gray Level Nonuniformity of Zone Counts Normalized

Amend DICOM PS3.16 as follows (changes to existing text are bold and underlined for additions and struckthrough for removals):DICOM Controlled Terminology Definitions (Normative)

DICOM Controlled Terminology Definitions

Code Value

Code Meaning

Definition

Notes

126050

Fractal Dimension

A statistical index of complexity comparing how detail in a fractal pattern changes with the scale at which it is measured; a ratio of the change in detail to the change in scale.

126060

Joint Entropy of GLCM

The zero order entropy of a Gray Level Co-occurrence Matrix (GLCM). A measure of disorder. Abbreviated ENT.See Fcm.joint.entr in .

126061

EnergyRoot Angular Second Moment of GLCM

The energy (uniformity) (square root of the Angular Second Moment (ASM)) of a Gray Level Co-occurrence Matrix (GLCM). A measure of orderliness.See .

Sometimes referred to as "energy", "uniformity" or "uniformity of energy" but then potentially confused with ASM. Not defined in .

126062

HomogeneityInverse Difference Moment of GLCM

The Inverse Difference Moment (homogeneity) of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated IDM.See Fcm.inv.diff.mom in.

Other concepts are sometimes referred to as "homogeneity", e.g., the "inverse difference", which is calculated from the absolute value of differences rather than square of them.

126063

Contrast of GLCM

The sum of squares variance of a Gray Level Co-occurrence Matrix (GLCM). A measure of gray level variations. Abbreviated CON.See Fcm.contrast in.

Distinct from "joint (sum of squares) variance" and "dissimilarity".

126064

Dissimilarity of GLCM

The dissimilarity of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated DIS.See Fcm.dissimilarity in.

Distinct from "contrast", which uses square rather than absolute value of difference.

126065

ASMAngular Second Moment of GLCM

The Angular Second Moment of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated ASM.See Fcm.energy in .

Sometimes referred to as "energy", "uniformity" or "uniformity of energy" but then potentially confused with square root of ASM.

126066

Correlation of GLCM

A measure of the linear dependency of greygray levels on those of neighbouring pixels of a Gray Level Co-occurrence Matrix (GLCM). Abbreviated COR.See Fcm.corr in.

Correlation is NaN for a constant image.

126067

Gray Level Co-occurrence Matrix (GLCM)

A tabulation of how often different combinations of pixel values (greygray levels) occur in an image. Abbreviated GLCM.See .

128776

Gray Level Run Length Matrix

The tabulation of gray level run lengths in a particular direction in an image. Abbreviated GLRLM.See .

128777

Gray Level Size Zone Matrix

A tabulation of counts of the number of groups of connected voxels with a specific discretized gray level value and size. Abbreviated GLSZM.See .

128781

Joint Maximum of GLCM

The probability corresponding to the most common gray level co-occurrence in the GLCM. Abbreviated MAX.See Fcm.joint.max in .

128782

Joint Average of GLCM

The gray level weighted sum of joint probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.joint.avg in .

128783

Joint Variance of GLCM

The sum of squares of the difference from the joint average of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.joint.var in .

128784

Difference Average of GLCM

The average for the diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.diff.avg in .

128785

Difference Variance of GLCM

The variance for the diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.diff.var in .

128786

Difference Entropy of GLCM

The entropy for the diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.diff.entr in .

128787

Sum Average of GLCM

The average for the cross-diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.sum.avg in .

128788

Sum Variance of GLCM

The variance for the cross-diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.sum.var in .

128789

Sum Entropy of GLCM

The entropy for the cross-diagonal probabilities of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.sum.entr in .

128790

Inverse Difference of GLCM

The inverse difference of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.diff in .

Sometimes referred to as "homogeneity" but that term is historically used to refer to the "inverse difference moment", which is calculated from the square of differences rather than absolute value of them.

128791

Inverse Difference Normalized of GLCM

The normalized inverse difference of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.diff.norm in .

The US not UK spelling of "normalized" is used to be consistent with the DICOM convention, rather than the IBSI spelling.

128792

Inverse Difference Moment Normalized of GLCM

The normalized inverse difference moment of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.diff.mom.norm in .

The US not UK spelling of "normalized" is used to be consistent with the DICOM convention, rather than the IBSI spelling.

128793

Inverse Variance of GLCM

The inverse variance of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.inv.var in .

128794

Autocorrelation of GLCM

The autocorrelation of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.auto.corr in .

128795

Cluster Tendency of GLCM

The cluster tendency of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.clust.tend in .

128796

Cluster Shade of GLCM

The cluster shade of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.clust.shade in .

128797

Cluster Prominence of GLCM

The cluster prominence of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.clust.prom in .

128798

First Measure of Information Correlation of GLCM

The first measure of information correlation of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.info.corr.1 in .

128799

Second Measure of Information Correlation of GLCM

The second measure of information correlation of a Gray Level Co-occurrence Matrix (GLCM).See Fcm.info.corr.2 in .

128801

Short Runs Emphasis

A measure of the distribution of short runs in a gray level run length matrix. Abbreviated SRE.See Frlm.sre in .

128802

Long Runs Emphasis

A measure of the distribution of long runs in a gray level run length matrix. Abbreviated LRE.See Frlm.lre in .

128803

Low Gray Level Run Emphasis

A measure of the distribution of low gray level values in a gray level run length matrix. Abbreviated LGRE.See Frlm.lgre in .

128804

High Gray Level Run Emphasis

A measure of the distribution of high gray level values in a gray level run length matrix. Abbreviated HGRE.See Frlm.hgre in .

128805

Short Run Low Gray Level Emphasis

A measure of the joint distribution of short runs and low gray level values in a gray level run length matrix. Abbreviated SRLGE.See Frlm.srlge in .

128806

Short Run High Gray Level Emphasis

A measure of the joint distribution of short runs and high gray level values in a gray level run length matrix. Abbreviated SRHGE.See Frlm.srhge in .

128807

Long Run Low Gray Level Emphasis

A measure of the joint distribution of long runs and low gray level values in a gray level run length matrix. Abbreviated LRLGE.See Frlm.lrlge in .

128808

Long Run High Gray Level Emphasis

A measure of the the joint distribution of long runs and high gray level values in a gray level run length matrix. Abbreviated LRHGE.See Frlm.lrhge in .

128809

Gray Level Nonuniformity in Runs

A measure of the similarity of gray level values throughout the image in a gray level run length matrix. Abbreviated RLM.GLNU.See Frlm.glnu in .

128810

Gray Level Nonuniformity in Runs Normalized

A normalized measure of the similarity of gray level values throughout the image in a gray level run length matrix.See Frlm.glnu.norm in .

The US not UK spelling of "normalized" is used to be consistent with the DICOM convention, rather than the IBSI spelling.

128811

Run Length Nonuniformity

A measure of the the similarity of the length of runs throughout the image in a gray level run length matrix. Abbreviated RLNU.See Frlm.rlnu in .

128812

Run Length Nonuniformity Normalized

A normalized measure of the the similarity of the length of runs throughout the image in a gray level run length matrix.See Frlm.rlnu.norm in .

The US not UK spelling of "normalized" is used to be consistent with the DICOM convention, rather than the IBSI spelling.

128813

Run Percentage

A measure of the homogeneity and distribution of runs of an image in a specific direction in a gray level run length matrix. Abbreviated RPC.See Frlm.r.perc in .

128814

Gray Level Variance in Runs

The variance in runs for the gray levels in a gray level run length matrix.See Frlm.gl.var in .

128815

Run Length Variance

The variance in runs for run lengths in a gray level run length matrix.See Frlm.rl.var in .

128816

Run Entropy

The entropy of runs in a gray level run length matrix.See Frlm.rl.entr in .

128821

Small Zone Emphasis

A feature that emphasizes small zones from a gray level size zone matrix. Abbreviated SZE.See Fszm.sze in .

128822

Large Zone Emphasis

A feature that emphasizes large zones from a gray level size zone matrix. Abbreviated LZE.See Fszm.lze in .

128823

Low Gray Level Zone Emphasis

A feature that emphasizes low gray level zones from a gray level size zone matrix. Abbreviated LGZE.See Fszm.lgze in .

128824

High Gray Level Zone Emphasis

A feature that emphasizes high gray level zones from a gray level size zone matrix. Abbreviated LGZE.See Fszm.hgze in .

128825

Small Zone Low Gray Level Emphasis

A feature that emphasizes small zone sizes and low gray levels from a gray level size zone matrix. Abbreviated SZLGE.See Fszm.szlge in .

128826

Small Zone High Gray Level Emphasis

A feature that emphasizes small zone sizes and high gray levels from a gray level size zone matrix. Abbreviated SZHGE.See Fszm.szhge in .

128827

Large Zone Low Gray Level Emphasis

A feature that emphasizes large zone sizes and low gray levels from a gray level size zone matrix. Abbreviated LZLGE.See Fszm.lzlge in .

128828

Large Zone High Gray Level Emphasis

A feature that emphasizes large zone sizes and high gray levels from a gray level size zone matrix. Abbreviated LZHGE.See Fszm.lzhge in .

128829

Gray Level Nonuniformity of Zone Counts

The distribution of zone counts over the gray values in a gray level size zone matrix. Abbreviated SZM.GLNU.See Fszm.glnu in .

128830

Gray Level Nonuniformity of Zone Counts Normalized

The normalized distribution of zone counts over the gray values in a gray level size zone matrix.See Fszm.glnu.norm in .

The US not UK spelling of "normalized" is used to be consistent with the DICOM convention, rather than the IBSI spelling.

128831

Zone Size Nonuniformity

The distribution of zone counts over the different zone sizes in a gray level size zone matrix. Abbreviated ZSNU.See Fszm.zsnu in .

128832

Zone Size Nonuniformity Normalized

The normalized distribution of zone counts over the different zone sizes in a gray level size zone matrix.See Fszm.zsnu.norm in .

The US not UK spelling of "normalized" is used to be consistent with the DICOM convention, rather than the IBSI spelling.

128833

Zone Percentage

The fraction of the number of realised zones relative to the maximum number of potential zones in a gray level size zone matrix. Abbreviated ZPERC.See Fszm.z.perc in .

128834

Gray Level Variance in Zones

The variance ithe variance in zone counts for the gray levels in a gray level size zone matrix.See Fszm.gl.var in .

128835

Zone Size Variance

The variance in zone counts for the different zone sizes in a gray level size zone matrix.See Fszm.zs.var in .

128836

Zone Size Entropy

The entropy of zone sizes in a gray level size zone matrix.See Fszm.zs.entr in .

Amend DICOM PS3.6 as follows (changes to existing text are bold and underlined for additions and struckthrough for removals):