C.3 General Class Profile
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## C.3 General Class Profile

### C.3.1 Abstract and Transfer Syntaxes

Application Profiles in this class, STD-US, shall support the appropriate Information Object Definitions (IOD) and Transfer Syntaxes for the Media Storage SOP Class in the following table. In the role of FS-Updater or FS-Creator the application can choose one of the three possible transfer Syntaxes to create an IOD. In the role of FS-Reader an application shall support all transfer Syntaxes defined for the STD-US application profile.

Table C.3-1. Ultrasound SOP Classes and Transfer Syntaxes

Information Object Definition | SOP Class UID | Transfer Syntax | Transfer Syntax UID
--- | --- | --- | ---
DICOM Media Storage Directory | 1.2.840.10008.1.3.10 | Explicit VR Little Endian Uncompressed | 1.2.840.10008.1.2.1 (see Section 8.6 in PS3.10 )
Ultrasound Image Storage | 1.2.840.10008.5.1.4.1.1.6.1 | Explicit VR Little Endian Uncompressed | 1.2.840.10008.1.2.1
Ultrasound Image Storage | 1.2.840.10008.5.1.4.1.1.6.1 | RLE Lossless Image Compression | 1.2.840.10008.1.2.5
Ultrasound Image Storage | 1.2.840.10008.5.1.4.1.1.6.1 | JPEG Lossy, Baseline Sequential with Huffman Coding (Process 1) | 1.2.840.10008.1.2.4.50
Ultrasound Multi-frame Image Storage | 1.2.840.10008.5.1.4.1.1.3.1 | Explicit VR Little Endian Uncompressed | 1.2.840.10008.1.2.1
Ultrasound Multi-frame Image Storage | 1.2.840.10008.5.1.4.1.1.3.1 | RLE Lossless Image Compression | 1.2.840.10008.1.2.5
Ultrasound Multi-frame Image Storage | 1.2.840.10008.5.1.4.1.1.3.1 | JPEG Lossy, Baseline Sequential with Huffman Coding (Process 1) | 1.2.840.10008.1.2.4.50

#### C.3.1.1 Ultrasound Single and Multi-frame Pixel Formats Supported

The STD-US application profile requires that all ultrasound image objects only be stored using the values described in PS3.3 US Image Module and the specializations used for the Ultrasound Single and Multi-Frame IODs.

In the role of FS-Updater or FS-Creator the application can choose any of the supported Photometric Interpretations described in PS3.3 US Image Module to create an IOD. In the role of FS-Reader, an application shall support all Photometric Interpretations described in PS3.3 US Image Module.

Table C.3-2 describes restrictions on the use of various Transfer Syntaxes with the supported Photometric Interpretations for both single and multi-frame images.

Table C.3-2. Defined Photometric Interpretation and Transfer Syntax Pairs

Photometric Interpretation Value | Transfer Syntax | Transfer Syntax UID
--- | --- | ---
MONOCHROME2 | Uncompressed RLE Lossless Image Compression | 1.2.840.10008.1.2.11.2.840.10008.1.2.5
RGB | Uncompressed RLE Lossless Image Compression | 1.2.840.10008.1.2.11.2.840.10008.1.2.5
PALETTE COLOR | Uncompressed RLE Lossless Image Compression | 1.2.840.10008.1.2.11.2.840.10008.1.2.5
YBR_FULL | RLE Lossless Image Compression | 1.2.840.10008.1.2.5
YBR_FULL_422 | Uncompressed JPEG Lossy | 1.2.840.10008.1.2.11.2.840.10008.1.2.4.50
YBR_PARTIAL_422 | Uncompressed JPEG Lossy | 1.2.840.10008.1.2.11.2.840.10008.1.2.4.50

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