Table C.8.25.14-4 describes the attributes for the Ophthalmic Axial Measurements Related Information Macro.
Table C.8.25.14-4. Ophthalmic Axial Measurements Related Information Macro Attributes
|
Attribute Name |
Tag |
Type |
Attribute Description |
|---|---|---|---|
|
Ultrasound Ophthalmic Axial Length Measurements Sequence |
(0022,1220) |
1C |
Related information about an axial length measurement being performed on an ultrasound device. Only a single Item shall be included in this sequence. Required if Ophthalmic Axial Measurements Device Type (0022,1009) is ULTRASOUND. |
|
>Ophthalmic Axial Length Velocity |
(0022,1059) |
1 |
The sound velocity used in calculating the Ophthalmic Axial Length Measurement Value (0022,1019), in m/sec. |
|
>Observer Type |
(0040,A084) |
1 |
Method used to select which acquired axial length measurement values are kept. Enumerated Values:
See Section C.8.25.14.1.1.5 for further explanation. |
|
>Ophthalmic Axial Length Data Source Code Sequence |
(0022,1150) |
1 |
Source of the value recorded in Ophthalmic Axial Length (0022,1019). Only a single Item shall be included in this sequence. |
|
Defined CID 4240 “Ophthalmic Measurement Or Calculation Data Source” |
|||
|
>Ophthalmic Axial Length Data Source Description |
(0022,1159) |
3 |
A free text description of the axial length measurement data source. |
|
Optical Ophthalmic Axial Length Measurements Sequence |
(0022,1225) |
1C |
Related information about an axial length measurement being performed on an optical device. Only a single Item shall be included in this sequence. Required if Ophthalmic Axial Measurements Device Type (0022,1009) is OPTICAL. |
|
>Signal to Noise Ratio |
(0022,1155) |
1C |
The ratio of signal power to the background noise power (Psignal / Pnoise). Required if Ophthalmic Axial Length Measurements Type (0022,1010) is TOTAL LENGTH. May be present otherwise. |
|
>Ophthalmic Axial Length Data Source Code Sequence |
(0022,1150) |
1 |
The source of the value in Ophthalmic Axial Length (0022,1019). Only a single Item shall be included in this sequence. |
|
Defined CID 4240 “Ophthalmic Measurement Or Calculation Data Source” |
|||
|
>Ophthalmic Axial Length Data Source Description |
(0022,1159) |
3 |
A free text description of the axial length measurement data source. |