This Section defines an Information Object to be used with several types of ophthalmic photographic imaging devices including fundus cameras, slit lamp cameras, scanning laser devices, stereoscopic cameras, video equipment and digital photographic equipment, with16 bit resolution per pixel in each image plane.
The Ophthalmic Photography 16 Bit Image IOD specifies a single-frame or a multi-frame image acquired on a digital photographic DICOM modality. This IOD can be used to encode single ophthalmic images and other combinations including cine sequences.
The E-R Model in Section A.1.2 of this Part depicts those components of the DICOM Information Model that directly reference the Ophthalmic Photography 16-Bit Image IOD, with exception of the VOI LUT, Frame of Reference and Modality LUT entities, which are not used. Table A.42-1 specifies the Modules of the Ophthalmic Photography 16 Bit Image IOD.
Note: The Curve Module was previously include in the list of Modules that shall not be present, but has been retired from DICOM. It is still not permitted to be present. See PS 3.3 2004.
Table A.42-1OPHTHALMIC PHOTOGRAPHY 16 BIT IMAGE IOD MODULES
|Clinical Trial Subject||C.7.1.3||U|
|Clinical Trial Study||C.7.2.3||U|
|Ophthalmic Photography Series||C.8.17.1||M|
|Clinical Trial Series||C.7.3.2||U|
|Frame of Reference||Synchronization||C.7.4.2||M|
|Enhanced Contrast/Bolus||C 7.6.4b||C - Required if contrast was administered; see A.42.4.2|
|Cine||C.7.6.5||C - Required if there is a sequential temporal relationship between all frames|
|Ophthalmic Photography Image||C.8.17.2||M|
|Ocular Region Imaged||C.8.17.5||M|
|Ophthalmic Photography Acquisition Parameters||C.8.17.4||M|
|Ophthalmic Photographic Parameters||C.8.17.3||M|
|Frame Extraction||C.12.3||C - Required if the SOP Instance was created in response to a Frame-Level retrieve request|
Note: The Specimen Identification Module was previously included in this IOD but has been retired. See PS 3.3-2008.
The following constraints on Series and Image attributes take precedence over the descriptions given in the Module Attribute Tables.
For Ophthalmic Photography 16 bit images, the Enumerated Value of Bits Allocated (0028,0100) (Image Pixel Module, C.7.6.3) shall be 16; the Enumerated Value of Bits Stored (0028,0101) shall be 16; and the Enumerated Value of High Bit (0028,0102) shall be 15.
For Contrast/Bolus Agent Sequence (0018,0012), the defined CID 4200 shall be used.