Материал: part16

Page 1342​

DICOM PS3.16 2020a - Content Mapping Resource​

Code Value​

Code Meaning​

Definition​

Notes​

128253​

OCT-A complex variance​

OCT angiography method based on variations in the​

complex (amplitude and phase) OCT signal from​

repeated B-scans at the same location. There are a​

number of factors that may cause a change in the OCT​

signalfrequencyrelativetothesignalduetostatictissue​

background. These factors include, for example, the​

Doppler effect that induces optical frequency shift and​

thechangeinbackscatteringduetotheparticlesthatare​

moving in and out of the OCT-probe volume during​

imaging. The changes in signal frequency cause the​

changesinboththeamplitudeandthephaseoftheOCT​

signal.Comparisonofthecomplex(amplitudeandphase)​

signal from repeated B-scans at the same location​

provides an image that has higher contrast in areas of​

erythrocyte motion. This method is referred to as​

OCT-based micro-angiography - complex (OMAGC).​

128254​

OCT-A speckle variance​

OCT angiography method that analyzes the temporal or​

spatial statistics of the intensity of speckle from OCT​

images and identifies blood vessels.​

128255​

OCT-A correlation mapping​

OCTangiographymethodthatdifferentiatesflowregions.​

Static regions usually have high correlation values while​

flow regions have lower correlation values.​

128256​

Doppler OCT-A​

OCTangiographymethodthatutilizestheDopplerphase​

resolved information to provide the velocity of flow.​

Sometimes referred to as the phase variance method.​

128257​

Retina depth encoded​

ImageusingpseudocolorstoillustratemultipleOPTENF​

vasculature flow​

images obtained at various depth levels within the retina​

from the OPT flow volume.​

128258​ Retinadepthencodedstructural​ImageusingpseudocolorstoillustratemultipleOPTENF​

reflectance map​

images obtained at various depth levels within the retina​

from the OPT structural volume.​

128259​

Retina vasculature flow​

Imagethatillustratesthevasculatureflowwithintheentire​

retina. Generated from the OPT flow volume with pixels​

approximately from inner limiting membrane (ILM) to​

photoreceptor inner segment/ellipsoid region (ISe).​

128260​

Retina structural reflectance​

ImagethatillustratestheOCTstructuralreflectancewithin​

map​

the entire retina. Generated from the OPT structural​

volume with pixels approximately from inner limiting​

membrane(ILM)tophotoreceptorinnersegment/ellipsoid​

region (ISe).​

128261​

Vitreous vasculature flow​

Image that illustrates the vasculature flow within the​

vitreous.GeneratedfromtheOPTflowvolumewithpixels​

approximately from a selected location anterior to ILM,​

to ILM. This space/potential space is referred clinically​

as the Vitreo-retinal Interface (VRI).​

128262​ Vitreous structural reflectance​ImagethatillustratestheOCTstructuralreflectancewithin​

map​

the vitreous. Generated from the OPT structural volume​

with pixels approximately from a selected location that​

is anterior to ILM, to ILM. This space/potential space is​

referred clinically as the Vitreo-retinal Interface (VRI).​

128263​ Radial peripapillary vasculature​Image that illustrates the OCT vasculature flow within​

flow​

theRNFLaroundtheopticdisk.GeneratedfromtheOPT​

flow volume with pixels approximately from ILM to the​

outer boundary of the RNFL.​

DICOM PS3.16 2020a - Content Mapping Resource​

Page 1343​

Code Value​

Code Meaning​

Definition​

Notes​

128265​

Superficial retina vasculature​

Image that illustrates the vasculature flow within the​

flow​

anterior layers of retina. Generated from the OPT flow​

volume with pixels approximately from ILM to ganglion​

cell layer/inner plexiform layer (GCL/IPL).​

128266​

Superficial retina structural​

ImagethatillustratestheOCTstructuralreflectancewithin​

reflectance map​

the anterior layers of retina. Generated from the OPT​

structural volume with pixels approximately from ILM to​

ganglion cell layer/inner plexiform layer (GCL/IPL).​

128267​ Middle inner retina vasculature​Image that illustrates the vasculature flow in the​

flow​

capillaries that connect the superficial and deeper​

capillarybeds.GeneratedfromtheOPTflowvolumewith​

pixels approximately at the level of the IPL. Sometimes​

referred to as the intermediate retina flow.​

128268​

Middle inner structural​

Image that illustrates the OCT structural reflectance in​

reflectance map​

the capillaries that connect the superficial and deeper​

capillarybeds.GeneratedfromtheOPTstructuralvolume​

with pixels approximately at the level of the IPL.​

Sometimes referred to as the intermediate retina flow.​

128269​ Deep retina vasculature flow​

Image that illustrates the vasculature flow at the level of​

the plexiform layers within the retina. Generated from​

theOPTflowvolumewithpixelsapproximatelyfrominner​

plexiform layer (IPL) to outer plexiform layer (OPL).​

128270​

Deep retina structural​

Image that illustrates the structural reflectance at the​

reflectance map​

level of the plexiform layers within the retina. Generated​

fromtheOPTstructuralvolumewithpixelsapproximately​

from inner plexiform layer (IPL) to outer plexiform layer​

(OPL).​

128271​ Outer retina vasculature flow​

Image that illustrates the vasculature flow at the level of​

theposteriorlayersoftheretina(outerretina).Generated​

from the OPT flow volume with pixels approximately in​

the translucent layers, from OPL to ISe. Sometimes​

referred to as flow in the deep avascular structure. Note​

For normal eyes, this image would not show detectable​

vascular flow.​

128272​

Outer retina structural​

Image that illustrates the structural reflectance at the​

reflectance map​

level of the posterior layers of the retina (outer retina).​

Generated from the OPT structural volume with pixels​

approximatelyinthetranslucentlayers,fromOPLtoISe.​

the chroriocapillaris. Generated from the OPT flow​

volume with pixels approximately below the retinal​

pigment epithelium (RPE) encompassing the thickness​

of choriocapillaris.​

128274​ Choriocapillaris structural​

Image that illustrates the structural reflectance at the​

reflectance map​

level of the chroriocapillaris. Generated from the OPT​

structural volume with pixels approximately below the​

retinal pigment epithelium (RPE) encompassing the​

thickness of choriocapillaris.​

Page 1344​

DICOM PS3.16 2020a - Content Mapping Resource​

Code Value​

Code Meaning​

Definition​

Notes​

128275​

Choroid vasculature flow​

Image that illustrates the vasculature flow at the level of​

the choroid. Generated from the OPT flow volume with​

pixels approximately below RPE, encompassing the​

thickness of choroid.​

128276​

Choroid structural reflectance​ Image that illustrates the structural reflectance at the​

map​

level of the choroid. Generated from the OPT structural​

volume with pixels approximately below RPE,​

encompassing the thickness of choroid.​

128277​ Whole eye vasculature flow​

Image that illustrates the vasculature flow at the entire​

posterior segment, including retina and choroid.​

Generated from the OPT flow volume with pixels​

encompassing the entire OCT scan.​

128278​

Wholeeyestructuralreflectance​Image that illustrates the structural reflectance from the​

map​

entire posterior segment, including retina and choroid.​

Generated from the OPT structural volume with pixels​

encompassing the entire OCT scan.​

128279​

Cube B-scan pattern​

Aseriesofdenselyspaced,parallelB-scansofthesame​

length covering an area.​

128280​

Raster B-scan pattern​

Aseriesofsparselyspaced,parallelB-scansofthesame​

length covering an area.​

128281​

Line B-scan pattern​

A single line B-scan.​

128282​

Radial B-scan pattern​

A series of B-scans arranged in a radial pattern of the​

same length covering an area.​

128283​

Cross B-scan pattern​

A pair of horizontal and vertical B-scans in a cross​

pattern.​

128284​

Circle B-scan pattern​

A single circular pattern B-scan.​

128285​ ConcentriccircleB-scanpattern​A series of concentric circular pattern B-scans with​

various diameters.​

128286​

Circle-raster B-scan pattern​

A series of concentric circular pattern B-scans with​

various diameters combined with a series of raster​

B-scan patterns.​

128287​

Circle-radial B-scan pattern​

A series of concentric circular pattern B-scans with​

variousdiameterscombinedwithaseriesofradialB-scan​

patterns.​

128288​

Grid B-scan pattern​

A series of vertical and horizontal B-scans.​

128289​ Outer surface of RNFL​

Retinal surface located approximately at the outer​

boundary of the retinal nerve fiber layer (RNFL).​

128290​ Outer surface of GCL​

Retinal surface approximately at the outer boundary of​

the Ganglion Cell Layer (GCL).​

128291​ Outer surface of IPL​

Retinal surface located approximately at the outer​

boundary of the Inner Plexiform Layer (IPL).​

128292​ Outer surface of INL​

Retinal surface located approximately at the outer​

boundary of the Inner Nuclear Layer (INL).​

128293​ Outer surface of OPL​

Retinal surface located approximately at the outer​

boundary of the Outer Plexiform Layer (OPL).​

128294​ Outer surface of HFL​

Retinal surface located approximately at the outer​

boundary of the Henle Fiber Layer (HFL) when present.​

128299​ Posterior surface of the RPE​

Retinal surface located approximately at the posterior​

surface of the Retinal Pigment Epithelium (RPE).​

128300​ Outer surface of the BM​

Retinal surface located approximately at the outer​

boundary of the Bruch’s Membrane (BM).​

128301​ Surface of the choroid-sclera​

Retinal surface located approximately at the​

interface​

choroid-sclera interface (SC).​

128302​ Outer surface of the CC​

Retinal surface located approximately at the outer​

boundary of the choriocapillaris (CC).​

128303​ OCT B-scan analysis​

Values are derived from performing analysis on OCT​

B-scans​

from ionizing radiation to a patient.​

128402​

Radiation Dose Estimate​

Estimate of absorbed energy from ionizing radiation.​

128403​ Radiation Dose Estimate Name​Name used to identify a radiation dose estimate.​

128404​

Anthropomorphic Model​

A mathematical description of a patient model for​

estimating radiation dose that describes or is thought of​

as having a human form or human attributes.​

128405​

Breast Thickness​

Thickness of the breast.​

128406​

BREP Radiation Transport​

Boundary based representation of the model for the​

Model​

estimation of radiation transport and absorbed dose in​

materials.​

128407​

DgN​

Normalized Mean Glandular Dose (DgN) is the​

conversion value used to calculate the absorbed dose​

from radiation to the fibroglandular tissue component of​

the breast from the exposure in air.​

128408​

Patient AP Dimension​

The size of a patient in the anterior-posterior dimension.​

128409​

Patient Lateral Dimension​

The size of a patient in the lateral dimension.​

128410​

SSDE Conversion Factor​

Conversion factor for Size Specific Dose Estimate​

(SSDE) calculations from CTDIvol.​