Enum: DICOMTransferSyntaxEnum
Transfer syntaxes registered in DICOM PS3.6 Annex A that define the byte ordering, VR encoding and pixel data compression of a DICOM data set. Pixel data validation includes confirming that decompression from a lossy or lossless transfer syntax yields the expected bit depth and that no unintended data loss occurred. Video transfer syntaxes (MPEG-2, H.264, HEVC) are used for endoscopy and ultrasound cine acquisitions. Fragmentable variants of the MPEG transfer syntaxes and retired JPEG processes are omitted; the full registry is at the see_also link.
URI: valuesets:DICOMTransferSyntaxEnum
Permissible Values
| Value | Title | Meaning | Description | Compression | Media | Retired | Uid |
|---|---|---|---|---|---|---|---|
| IMPLICIT_VR_LITTLE_ENDIAN | Implicit VR Little Endian | Default transfer syntax for DICOM; VRs are looked up from the data dictionary rather than encoded | none | 1.2.840.10008.1.2 | |||
| EXPLICIT_VR_LITTLE_ENDIAN | Explicit VR Little Endian | Uncompressed encoding with VRs explicitly encoded in each data element | none | 1.2.840.10008.1.2.1 | |||
| ENCAPSULATED_UNCOMPRESSED_EXPLICIT_VR_LITTLE_ENDIAN | Encapsulated Uncompressed Explicit VR Little Endian | Uncompressed pixel data encapsulated in fragments, one per frame | none | 1.2.840.10008.1.2.1.98 | |||
| DEFLATED_EXPLICIT_VR_LITTLE_ENDIAN | Deflated Explicit VR Little Endian | Explicit VR Little Endian data set compressed as a whole with the deflate algorithm | lossless | 1.2.840.10008.1.2.1.99 | |||
| EXPLICIT_VR_BIG_ENDIAN | Explicit VR Big Endian (Retired) | Big endian byte ordering with explicit VRs; retired but still encountered in legacy archives | none | true | 1.2.840.10008.1.2.2 | ||
| JPEG_BASELINE_PROCESS_1 | JPEG Baseline (Process 1) | Default transfer syntax for lossy JPEG 8-bit image compression | lossy | 1.2.840.10008.1.2.4.50 | |||
| JPEG_EXTENDED_PROCESS_2_4 | JPEG Extended (Process 2 & 4) | Default transfer syntax for lossy JPEG 12-bit image compression (Process 4 only) | lossy | 1.2.840.10008.1.2.4.51 | |||
| JPEG_LOSSLESS_PROCESS_14 | JPEG Lossless, Non-Hierarchical (Process 14) | Lossless JPEG compression using any predictor | lossless | 1.2.840.10008.1.2.4.57 | |||
| JPEG_LOSSLESS_PROCESS_14_SV1 | JPEG Lossless, Non-Hierarchical, First-Order Prediction (Process 14 [Selection Value 1]) | Default transfer syntax for lossless JPEG image compression | lossless | 1.2.840.10008.1.2.4.70 | |||
| JPEG_LS_LOSSLESS | JPEG-LS Lossless Image Compression | Lossless compression using the JPEG-LS (ISO 14495) algorithm | lossless | 1.2.840.10008.1.2.4.80 | |||
| JPEG_LS_NEAR_LOSSLESS | JPEG-LS Lossy (Near-Lossless) Image Compression | Near-lossless JPEG-LS compression with a bounded per-pixel error | lossy | 1.2.840.10008.1.2.4.81 | |||
| JPEG_2000_LOSSLESS_ONLY | JPEG 2000 Image Compression (Lossless Only) | JPEG 2000 wavelet compression restricted to reversible (lossless) mode | lossless | 1.2.840.10008.1.2.4.90 | |||
| JPEG_2000 | JPEG 2000 Image Compression | JPEG 2000 wavelet compression, lossy or lossless | lossy or lossless | 1.2.840.10008.1.2.4.91 | |||
| JPEG_2000_MULTICOMPONENT_LOSSLESS_ONLY | JPEG 2000 Part 2 Multi-component Image Compression (Lossless Only) | JPEG 2000 Part 2 multi-component transform, reversible mode only | lossless | 1.2.840.10008.1.2.4.92 | |||
| JPEG_2000_MULTICOMPONENT | JPEG 2000 Part 2 Multi-component Image Compression | JPEG 2000 Part 2 multi-component transform, lossy or lossless | lossy or lossless | 1.2.840.10008.1.2.4.93 | |||
| JPIP_REFERENCED | JPIP Referenced | Pixel data referenced via a JPEG 2000 Interactive Protocol URL rather than encoded in the data set | referenced | 1.2.840.10008.1.2.4.94 | |||
| JPIP_REFERENCED_DEFLATE | JPIP Referenced Deflate | JPIP referenced pixel data with the remaining data set deflated | referenced | 1.2.840.10008.1.2.4.95 | |||
| MPEG2_MAIN_PROFILE_MAIN_LEVEL | MPEG2 Main Profile / Main Level | MPEG-2 video compression for standard definition video | lossy | video | 1.2.840.10008.1.2.4.100 | ||
| MPEG2_MAIN_PROFILE_HIGH_LEVEL | MPEG2 Main Profile / High Level | MPEG-2 video compression for high definition video | lossy | video | 1.2.840.10008.1.2.4.101 | ||
| MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_1 | MPEG-4 AVC/H.264 High Profile / Level 4.1 | H.264 video compression for high definition video | lossy | video | 1.2.840.10008.1.2.4.102 | ||
| MPEG4_AVC_H264_BD_COMPATIBLE_HIGH_PROFILE_LEVEL_4_1 | MPEG-4 AVC/H.264 BD-compatible High Profile / Level 4.1 | H.264 video compression constrained for Blu-ray Disc compatibility | lossy | video | 1.2.840.10008.1.2.4.103 | ||
| MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_2_2D | MPEG-4 AVC/H.264 High Profile / Level 4.2 For 2D Video | H.264 video compression for 2D video at higher frame rates and resolutions | lossy | video | 1.2.840.10008.1.2.4.104 | ||
| MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_2_3D | MPEG-4 AVC/H.264 High Profile / Level 4.2 For 3D Video | H.264 video compression for 3D (stereoscopic) video | lossy | video | 1.2.840.10008.1.2.4.105 | ||
| MPEG4_AVC_H264_STEREO_HIGH_PROFILE_LEVEL_4_2 | MPEG-4 AVC/H.264 Stereo High Profile / Level 4.2 | H.264 stereo high profile for stereoscopic video | lossy | video | 1.2.840.10008.1.2.4.106 | ||
| HEVC_H265_MAIN_PROFILE_LEVEL_5_1 | HEVC/H.265 Main Profile / Level 5.1 | HEVC video compression with 8-bit samples | lossy | video | 1.2.840.10008.1.2.4.107 | ||
| HEVC_H265_MAIN_10_PROFILE_LEVEL_5_1 | HEVC/H.265 Main 10 Profile / Level 5.1 | HEVC video compression with 10-bit samples | lossy | video | 1.2.840.10008.1.2.4.108 | ||
| JPEG_XL_LOSSLESS | JPEG XL Lossless | JPEG XL compression restricted to lossless mode | lossless | 1.2.840.10008.1.2.4.110 | |||
| JPEG_XL_JPEG_RECOMPRESSION | JPEG XL JPEG Recompression | Lossless recompression of existing JPEG codestreams using JPEG XL | lossless | 1.2.840.10008.1.2.4.111 | |||
| JPEG_XL | JPEG XL | JPEG XL compression, lossy or lossless | lossy or lossless | 1.2.840.10008.1.2.4.112 | |||
| HTJ2K_LOSSLESS_ONLY | High-Throughput JPEG 2000 Image Compression (Lossless Only) | High-throughput JPEG 2000 (Part 15) restricted to lossless mode | lossless | 1.2.840.10008.1.2.4.201 | |||
| HTJ2K_RPCL_LOSSLESS_ONLY | High-Throughput JPEG 2000 with RPCL Options Image Compression (Lossless Only) | Lossless high-throughput JPEG 2000 with resolution-position-component-layer progression for progressive decoding | lossless | 1.2.840.10008.1.2.4.202 | |||
| HTJ2K | High-Throughput JPEG 2000 Image Compression | High-throughput JPEG 2000, lossy or lossless | lossy or lossless | 1.2.840.10008.1.2.4.203 | |||
| RLE_LOSSLESS | RLE Lossless | Run-length encoded lossless compression, widely used for ultrasound | lossless | 1.2.840.10008.1.2.5 | |||
| SMPTE_ST_2110_20_UNCOMPRESSED_PROGRESSIVE_VIDEO | SMPTE ST 2110-20 Uncompressed Progressive Active Video | Uncompressed progressive video streamed per SMPTE ST 2110-20, used in real-time video communication | none | video | 1.2.840.10008.1.2.7.1 | ||
| SMPTE_ST_2110_20_UNCOMPRESSED_INTERLACED_VIDEO | SMPTE ST 2110-20 Uncompressed Interlaced Active Video | Uncompressed interlaced video streamed per SMPTE ST 2110-20 | none | video | 1.2.840.10008.1.2.7.2 |
Slots
| Name | Description |
|---|---|
| dicom_transfer_syntax | The DICOM transfer syntax used to encode a data set or its pixel data |
See Also
Identifier and Mapping Information
Schema Source
- from schema: https://w3id.org/valuesets
LinkML Source
name: DICOMTransferSyntaxEnum
instantiates:
- valuesets_meta:ValueSetEnumDefinition
description: Transfer syntaxes registered in DICOM PS3.6 Annex A that define the byte
ordering, VR encoding and pixel data compression of a DICOM data set. Pixel data
validation includes confirming that decompression from a lossy or lossless transfer
syntax yields the expected bit depth and that no unintended data loss occurred.
Video transfer syntaxes (MPEG-2, H.264, HEVC) are used for endoscopy and ultrasound
cine acquisitions. Fragmentable variants of the MPEG transfer syntaxes and retired
JPEG processes are omitted; the full registry is at the see_also link.
title: DICOM Transfer Syntax
from_schema: https://w3id.org/valuesets
see_also:
- https://dicom.nema.org/medical/dicom/current/output/chtml/part06/chapter_A.html
contributors:
- orcid:0000-0002-6601-2165
- https://github.com/anthropics/claude-code
status: DRAFT
rank: 1000
permissible_values:
IMPLICIT_VR_LITTLE_ENDIAN:
text: IMPLICIT_VR_LITTLE_ENDIAN
description: Default transfer syntax for DICOM; VRs are looked up from the data
dictionary rather than encoded
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2
compression:
tag: compression
value: none
title: Implicit VR Little Endian
EXPLICIT_VR_LITTLE_ENDIAN:
text: EXPLICIT_VR_LITTLE_ENDIAN
description: Uncompressed encoding with VRs explicitly encoded in each data element
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.1
compression:
tag: compression
value: none
title: Explicit VR Little Endian
ENCAPSULATED_UNCOMPRESSED_EXPLICIT_VR_LITTLE_ENDIAN:
text: ENCAPSULATED_UNCOMPRESSED_EXPLICIT_VR_LITTLE_ENDIAN
description: Uncompressed pixel data encapsulated in fragments, one per frame
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.1.98
compression:
tag: compression
value: none
title: Encapsulated Uncompressed Explicit VR Little Endian
DEFLATED_EXPLICIT_VR_LITTLE_ENDIAN:
text: DEFLATED_EXPLICIT_VR_LITTLE_ENDIAN
description: Explicit VR Little Endian data set compressed as a whole with the
deflate algorithm
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.1.99
compression:
tag: compression
value: lossless
title: Deflated Explicit VR Little Endian
EXPLICIT_VR_BIG_ENDIAN:
text: EXPLICIT_VR_BIG_ENDIAN
description: Big endian byte ordering with explicit VRs; retired but still encountered
in legacy archives
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.2
compression:
tag: compression
value: none
retired:
tag: retired
value: 'true'
title: Explicit VR Big Endian (Retired)
JPEG_BASELINE_PROCESS_1:
text: JPEG_BASELINE_PROCESS_1
description: Default transfer syntax for lossy JPEG 8-bit image compression
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.50
compression:
tag: compression
value: lossy
title: JPEG Baseline (Process 1)
JPEG_EXTENDED_PROCESS_2_4:
text: JPEG_EXTENDED_PROCESS_2_4
description: Default transfer syntax for lossy JPEG 12-bit image compression (Process
4 only)
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.51
compression:
tag: compression
value: lossy
title: JPEG Extended (Process 2 & 4)
JPEG_LOSSLESS_PROCESS_14:
text: JPEG_LOSSLESS_PROCESS_14
description: Lossless JPEG compression using any predictor
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.57
compression:
tag: compression
value: lossless
title: JPEG Lossless, Non-Hierarchical (Process 14)
JPEG_LOSSLESS_PROCESS_14_SV1:
text: JPEG_LOSSLESS_PROCESS_14_SV1
description: Default transfer syntax for lossless JPEG image compression
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.70
compression:
tag: compression
value: lossless
title: JPEG Lossless, Non-Hierarchical, First-Order Prediction (Process 14 [Selection
Value 1])
JPEG_LS_LOSSLESS:
text: JPEG_LS_LOSSLESS
description: Lossless compression using the JPEG-LS (ISO 14495) algorithm
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.80
compression:
tag: compression
value: lossless
title: JPEG-LS Lossless Image Compression
JPEG_LS_NEAR_LOSSLESS:
text: JPEG_LS_NEAR_LOSSLESS
description: Near-lossless JPEG-LS compression with a bounded per-pixel error
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.81
compression:
tag: compression
value: lossy
title: JPEG-LS Lossy (Near-Lossless) Image Compression
JPEG_2000_LOSSLESS_ONLY:
text: JPEG_2000_LOSSLESS_ONLY
description: JPEG 2000 wavelet compression restricted to reversible (lossless)
mode
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.90
compression:
tag: compression
value: lossless
title: JPEG 2000 Image Compression (Lossless Only)
JPEG_2000:
text: JPEG_2000
description: JPEG 2000 wavelet compression, lossy or lossless
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.91
compression:
tag: compression
value: lossy or lossless
title: JPEG 2000 Image Compression
JPEG_2000_MULTICOMPONENT_LOSSLESS_ONLY:
text: JPEG_2000_MULTICOMPONENT_LOSSLESS_ONLY
description: JPEG 2000 Part 2 multi-component transform, reversible mode only
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.92
compression:
tag: compression
value: lossless
title: JPEG 2000 Part 2 Multi-component Image Compression (Lossless Only)
JPEG_2000_MULTICOMPONENT:
text: JPEG_2000_MULTICOMPONENT
description: JPEG 2000 Part 2 multi-component transform, lossy or lossless
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.93
compression:
tag: compression
value: lossy or lossless
title: JPEG 2000 Part 2 Multi-component Image Compression
JPIP_REFERENCED:
text: JPIP_REFERENCED
description: Pixel data referenced via a JPEG 2000 Interactive Protocol URL rather
than encoded in the data set
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.94
compression:
tag: compression
value: referenced
title: JPIP Referenced
JPIP_REFERENCED_DEFLATE:
text: JPIP_REFERENCED_DEFLATE
description: JPIP referenced pixel data with the remaining data set deflated
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.95
compression:
tag: compression
value: referenced
title: JPIP Referenced Deflate
MPEG2_MAIN_PROFILE_MAIN_LEVEL:
text: MPEG2_MAIN_PROFILE_MAIN_LEVEL
description: MPEG-2 video compression for standard definition video
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.100
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG2 Main Profile / Main Level
MPEG2_MAIN_PROFILE_HIGH_LEVEL:
text: MPEG2_MAIN_PROFILE_HIGH_LEVEL
description: MPEG-2 video compression for high definition video
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.101
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG2 Main Profile / High Level
MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_1:
text: MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_1
description: H.264 video compression for high definition video
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.102
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG-4 AVC/H.264 High Profile / Level 4.1
MPEG4_AVC_H264_BD_COMPATIBLE_HIGH_PROFILE_LEVEL_4_1:
text: MPEG4_AVC_H264_BD_COMPATIBLE_HIGH_PROFILE_LEVEL_4_1
description: H.264 video compression constrained for Blu-ray Disc compatibility
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.103
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG-4 AVC/H.264 BD-compatible High Profile / Level 4.1
MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_2_2D:
text: MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_2_2D
description: H.264 video compression for 2D video at higher frame rates and resolutions
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.104
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG-4 AVC/H.264 High Profile / Level 4.2 For 2D Video
MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_2_3D:
text: MPEG4_AVC_H264_HIGH_PROFILE_LEVEL_4_2_3D
description: H.264 video compression for 3D (stereoscopic) video
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.105
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG-4 AVC/H.264 High Profile / Level 4.2 For 3D Video
MPEG4_AVC_H264_STEREO_HIGH_PROFILE_LEVEL_4_2:
text: MPEG4_AVC_H264_STEREO_HIGH_PROFILE_LEVEL_4_2
description: H.264 stereo high profile for stereoscopic video
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.106
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: MPEG-4 AVC/H.264 Stereo High Profile / Level 4.2
HEVC_H265_MAIN_PROFILE_LEVEL_5_1:
text: HEVC_H265_MAIN_PROFILE_LEVEL_5_1
description: HEVC video compression with 8-bit samples
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.107
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: HEVC/H.265 Main Profile / Level 5.1
HEVC_H265_MAIN_10_PROFILE_LEVEL_5_1:
text: HEVC_H265_MAIN_10_PROFILE_LEVEL_5_1
description: HEVC video compression with 10-bit samples
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.108
compression:
tag: compression
value: lossy
media:
tag: media
value: video
title: HEVC/H.265 Main 10 Profile / Level 5.1
JPEG_XL_LOSSLESS:
text: JPEG_XL_LOSSLESS
description: JPEG XL compression restricted to lossless mode
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.110
compression:
tag: compression
value: lossless
title: JPEG XL Lossless
JPEG_XL_JPEG_RECOMPRESSION:
text: JPEG_XL_JPEG_RECOMPRESSION
description: Lossless recompression of existing JPEG codestreams using JPEG XL
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.111
compression:
tag: compression
value: lossless
title: JPEG XL JPEG Recompression
JPEG_XL:
text: JPEG_XL
description: JPEG XL compression, lossy or lossless
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.112
compression:
tag: compression
value: lossy or lossless
title: JPEG XL
HTJ2K_LOSSLESS_ONLY:
text: HTJ2K_LOSSLESS_ONLY
description: High-throughput JPEG 2000 (Part 15) restricted to lossless mode
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.201
compression:
tag: compression
value: lossless
title: High-Throughput JPEG 2000 Image Compression (Lossless Only)
HTJ2K_RPCL_LOSSLESS_ONLY:
text: HTJ2K_RPCL_LOSSLESS_ONLY
description: Lossless high-throughput JPEG 2000 with resolution-position-component-layer
progression for progressive decoding
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.202
compression:
tag: compression
value: lossless
title: High-Throughput JPEG 2000 with RPCL Options Image Compression (Lossless
Only)
HTJ2K:
text: HTJ2K
description: High-throughput JPEG 2000, lossy or lossless
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.4.203
compression:
tag: compression
value: lossy or lossless
title: High-Throughput JPEG 2000 Image Compression
RLE_LOSSLESS:
text: RLE_LOSSLESS
description: Run-length encoded lossless compression, widely used for ultrasound
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.5
compression:
tag: compression
value: lossless
title: RLE Lossless
SMPTE_ST_2110_20_UNCOMPRESSED_PROGRESSIVE_VIDEO:
text: SMPTE_ST_2110_20_UNCOMPRESSED_PROGRESSIVE_VIDEO
description: Uncompressed progressive video streamed per SMPTE ST 2110-20, used
in real-time video communication
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.7.1
compression:
tag: compression
value: none
media:
tag: media
value: video
title: SMPTE ST 2110-20 Uncompressed Progressive Active Video
SMPTE_ST_2110_20_UNCOMPRESSED_INTERLACED_VIDEO:
text: SMPTE_ST_2110_20_UNCOMPRESSED_INTERLACED_VIDEO
description: Uncompressed interlaced video streamed per SMPTE ST 2110-20
annotations:
uid:
tag: uid
value: 1.2.840.10008.1.2.7.2
compression:
tag: compression
value: none
media:
tag: media
value: video
title: SMPTE ST 2110-20 Uncompressed Interlaced Active Video