B.3 STD-XA1K Application Profile Class Requirements
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## B.3 STD-XA1K Application Profile Class Requirements

### B.3.1 SOP Classes and Transfer Syntaxes

This Application Profile Class is based on the Media Storage Service Class (see PS3.4).

SOP Classes and corresponding Transfer Syntaxes supported by this Application Profile are specified in Table B.3-1.

Table B.3-1. STD-XA1K SOP Classes and Transfer Syntaxes

Information Object Definition | SOP Class UID | Transfer Syntax and UID | FSC Requirement | FSR Requirement | FSU Requirement (see Note 1)
--- | --- | --- | --- | --- | ---
Basic Directory | 1.2.840.10008.1.3.10 | Explicit VR Little Endian Uncompressed 1.2.840.10008.1.2.1 | Mandatory | Mandatory | Mandatory
X-Ray Angiographic Image | 1.2.840.10008.5.1.4.1.1.12.1 | JPEG Lossless Process 14 (selection value 1) 1.2.840.10008.1.2.4.70 | Mandatory | Mandatory | Optional
X-Ray Angiographic Image | 1.2.840.10008.5.1.4.1.1.12.1 | JPEG Lossy, Baseline Sequential with Huffman Coding (Process 1) 1.2.840.10008.1.2.4.50 | Optional for DVD; Disallowed for CD | Mandatory for DVD; Disallowed for CD | Undefined for DVD; Disallowed for CD
X-Ray Angiographic Image | 1.2.840.10008.5.1.4.1.1.12.1 | JPEG Extended (Process 2 & 4): Default Transfer Syntax for Lossy JPEG 12 Bit Image Compression (Process 4 only) 1.2.840.10008.1.2.4.51 | Optional for DVD; Disallowed for CD | Mandatory for DVD; Disallowed for CD | Undefined for DVD; Disallowed for CD
Secondary Capture Image Storage | 1.2.840.10008.5.1.4.1.1.7 | Explicit VR Little Endian Uncompressed 1.2.840.10008.1.2.1 | Optional | Mandatory | Optional
Grayscale Softcopy Presentation State Storage | 1.2.840.10008.5.1.4.1.1.11.1 | Explicit VR Little Endian Uncompressed 1.2.840.10008.1.2.1 | Optional | Optional | Optional

### Note

1. The FSU requirement is not defined for STD-XA1K-DVD profile.

2. The Standalone Overlay, Standalone Curve and Detached Patient management SOP Classes were formerly defined in these profiles, but have been retired. The Grayscale Softcopy Presentation State Storage SOP Class has been added as the preferred mechanism for conveying annotations.

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