Материал: part03

Page 1176​

Attribute Name​

Tag​

Type​

>>Include Table 8.8-1 “Code Sequence Macro Attributes”​

Keratometer Index​

(0022,1033)​

2​

Refractive Index of Cornea​

(0046,0117)​

1C​

Refractive Index of Aqueous​

(0046,0118)​

1C​

Humor​

Attribute Name​

Tag​

Type​

Attribute Description​

Modality​

(0008,0060)​

1​

Type of equipment that originally acquired the data used to create the​

measurements in this Series.​

Enumerated Values:​

OPV​

See Section C.7.3.1.1.1 for further explanation.​

ReferencedPerformed​

(0008,1111)​

1C​

Uniquely identifies the Performed Procedure Step SOP Instance to which​

Procedure Step​

the Series is related.​

Sequence​

Only a single Item shall be included in this Sequence.​

Required if a Performed Procedure Step SOP Class was involved in the​

creation of this Series.​

>Include Table 10-11 “SOP Instance Reference Macro​

Attributes”​

Request Attributes​

(0040,0275)​

3​

Sequence that contains Attributes from the Imaging Service Request.​

Sequence​

One or more Items are permitted in this Sequence.​

Attribute Name​

Tag​

Type​

Attribute Description​

Visual Field Horizontal Extent​

(0024,0010)​

1​

The maximum horizontal angular subtend (diameter or width)​

of the tested visual field, in degrees.​

Visual Field Vertical Extent​

(0024,0011)​

1​

The maximum vertical angular subtend (diameter or height) of​

the tested visual field, in degrees.​

Visual Field Shape​

(0024,0012)​

1​

The shape of the visual field tested.​

Defined Terms:​

Page 1178​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

Screening Test Mode Code​

(0024,0016)​

1C​

Mode used to determine how the starting luminance values​

Sequence​

and expected thresholds are chosen.​

Only a single Item shall be included in this Sequence.​

RequiredifContentItemModifierSequence(0040,0441)within​

Performed Protocol Code Sequence (0040,0260) contains an​

Item with the value (360156006, SCT, "Screening"). May be​

present otherwise.​

>Include Table 8.8-1 “Code Sequence Macro Attributes”​

DCID 4252 “Visual Field Static Perimetry Screening Test​

Modes”​

MaximumStimulusLuminance​

(0024,0018)​

1​

Maximumluminanceofstimulus,incandelaspersquaremeter​

(cd/m²).​

Background Luminance​

(0024,0020)​

1​

Background luminance of the device, in candelas per square​

meter (cd/m²).​

Note​

This value is easily convertible to apostilb, which is​

used only in perimetry and is not a standardized unit.​

Stimulus Color Code​

(0024,0021)​

1​

Color of light stimulus presented to the patient.​

Sequence​

Only a single Item shall be included in this Sequence.​

>Include Table 8.8-1 “Code Sequence Macro Attributes”​

DCID 4255 “Visual Field Illumination Color”​

BackgroundIlluminationColor​

(0024,0024)​

1​

Color of the background illumination of the visual field device.​

Code Sequence​

Only a single Item shall be included in this Sequence.​

>Include Table 8.8-1 “Code Sequence Macro Attributes”​

DCID 4255 “Visual Field Illumination Color”​

Stimulus Area​

(0024,0025)​

1​

Area of light stimulus presented to the patient, in degrees​

squared.​

Stimulus Presentation Time​

(0024,0028)​

1​

The duration of time that a light stimulus is presented to a​

Attribute Name​

Tag​

Type​

Attribute Description​

Fixation Sequence​

(0024,0032)​

1​

The patient's gaze stability information during the visual field test.​

Only a single Item shall be included in this Sequence.​

>Fixation Monitoring Code​

(0024,0033)​

1​

The device strategy used to monitor the patient's fixation.​

Sequence​

One or more Items shall be included in this Sequence.​

DCID 4253 “Visual Field Static Perimetry Fixation Strategy”.​

Page 1179​

Attribute Name​

Tag​

Type​

Attribute Description​

>Fixation Checked Quantity​

(0024,0035)​

1C​

be present otherwise.​

>Patient Not Properly Fixated​

(0024,0036)​

1C​

Quantity​

be present otherwise.​

>Excessive Fixation Losses​

(0024,0039)​

1​

Data Flag​

Enumerated Values:​

YES​

NO​

>Excessive Fixation Losses​

(0024,0040)​

1C​

limits.​

Enumerated Values:​

YES​

NO​

YES.​

Visual Field Catch Trial​

(0024,0034)​

1​

Sequence​

>Catch Trials Data Flag​

(0024,0055)​

1​

Whether catch trials data were performed.​

Enumerated Values:​

YES​

NO​

>Negative Catch Trials​

(0024,0048)​

1C​

Quantity​

trials).​

>False Negatives Quantity​

(0024,0050)​

1C​

(false negatives).​

>False Negatives Estimate​

(0024,0045)​

1​

Flag​

Enumerated Values:​

Page 1180​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>False Negatives Estimate​

(0024,0046)​

1C​

Estimatedpercentageofallstimulithatwerenotseenbythepatient​

but were previously seen at a lower luminance earlier in the visual​

field test (false negative responses), as percent.​

Required if False Negatives Estimate Flag (0024,0045) is YES.​

>Excessive False Negatives​

(0024,0051)​

1​

Whether the device was able to determine excessive false​

Data Flag​

negatives.​

Enumerated Values:​

YES​

NO​

>Excessive False Negatives​

(0024,0052)​

1C​

The false negative estimate is outside of implementation-specific​

limits.​

Enumerated Values:​

YES​

NO​

Required if Excessive False Negatives Data Flag (0024,0051) is​

YES.​

>PositiveCatchTrialsQuantity​

(0024,0056)​

1C​

The total number of times the device behaved as if it was going to​

present a visual stimulus but did not actually present the stimulus​

(positive catch trials).​

Required if Catch Trials Data Flag (0024,0055) is YES.​

>False Positives Quantity​

(0024,0060)​

1C​

Thetotalnumberofpatientresponsesthatoccurredatatimewhen​

no visual stimulus was present (false positive responses).​

Required if Catch Trials Data Flag (0024,0055) is YES.​

>FalsePositivesEstimateFlag​

(0024,0053)​

1​

Whether the device was able to estimate false positives.​

Enumerated Values:​

YES​

NO​

>False Positives Estimate​

(0024,0054)​

1C​

Estimated percentage of all patient responses that occurred at a​

timewhennovisualstimuluswaspresent(falsepositiveresponses),​

as percent.​

Required if False Positives Estimate Flag (0024,0053) is YES.​

>Excessive False Positives​

(0024,0061)​

1​

Whetherthedevicewasabletodetermineexcessivefalsepositives.​

Data Flag​

Enumerated Values:​

YES​

NO​

>Excessive False Positives​

(0024,0062)​

1C​

The false positive estimate is outside of implementation-specific​

limit.​