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dicom 标准的 RT部分
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Digital Imaging and Communications
in Medicine (DICOM)
Supplement 11
Radiotherapy Objects
Status: Final Text, 4 June 1997
DICOM RT Supplement
Final Text, 4 June 1997
i
TABLE OF CONTENTS
Part 3 Addendum Radiotherapy Information Object Definitions ................................................................1
Foreword.................................................................................................................................................2
Scope and Field of Application.................................................................................................................3
A.U RT IMAGE INFORMATION OBJECT DEFINITION .................................................................. 11
A.U.1 RT Image IOD Description............................................................................................... 11
A.U.2 RT Image IOD entity-relationship model .......................................................................... 11
A.U.3 RT Image IOD Module Table........................................................................................... 12
A.V RT DOSE INFORMATION OBJECT DEFINITION.................................................................... 14
A.V.1 RT Dose IOD Description ................................................................................................ 14
A.V.2 RT Dose IOD entity-relationship model ............................................................................14
A.V.3 RT Dose IOD Module Table............................................................................................. 15
A.W RT STRUCTURE SET INFORMATION OBJECT DEFINITION ...............................................17
A.W.1 RT Structure Set IOD Description................................................................................... 17
A.W.2 RT Structure Set IOD entity-relationship model...............................................................17
A.W.3 RT Structure Set IOD Module Table ............................................................................... 18
A.X RT PLAN INFORMATION OBJECT DEFINITION.....................................................................19
A.X.1 RT Plan IOD Description .................................................................................................19
A.X.2 RT Plan IOD entity-relationship model ............................................................................. 19
A.X.3 RT Plan IOD Module Table.............................................................................................. 20
C.7.3.1.1.1 Modality............................................................................................................ 22
C.8.X Radiotherapy................................................................................................................... 23
C.8.X.1 RT Series Module ..................................................................................................24
C.8.X.2 RT Image Module................................................................................................... 25
C.8.X.3 RT Dose Module .................................................................................................... 34
C.8.X.4 RT DVH Module..................................................................................................... 39
C.8.X.5 Structure Set Module.............................................................................................. 41
C.8.X.6 ROI Contour Module ..............................................................................................44
C.8.X.7 RT Dose ROI Module............................................................................................. 46
C.8.X.8 RT ROI Observations Module................................................................................. 47
C.8.X.9 RT General Plan Module ........................................................................................ 50
C.8.X.10 RT Prescription Module ........................................................................................ 52
C.8.X.11 RT Tolerance Tables Module................................................................................55
C.8.X.12 RT Patient Setup Module .....................................................................................57
C.8.X.13 RT Fraction Scheme Module ................................................................................ 59
C.8.X.14 RT Beams Module................................................................................................ 64
C.8.X.15 RT Brachy Application Setups Module.................................................................. 80
C.8.X.16 Approval Module ..................................................................................................90
Part 4 Addendum Radiotherapy Storage SOP Classes .......................................................................... 91
B.5 STANDARD SOP CLASSES.....................................................................................................92
Part 6 Addendum Radiotherapy Data Dictionary .................................................................................... 93
DICOM RT Supplement RT IODs
Final Text, 4 June 1997
1
Digital Imaging and Communications
in Medicine (DICOM)
Part 3 Addendum Radiotherapy
Information Object Definitions
DICOM RT Supplement RT IODs
Final Text, 4 June 1997
2
Item #1
Standard DICOM foreword - will remain unchanged in DICOM Part 3 FOREWORD
Foreword
ACR (the American College of Radiology) and NEMA (the National Electrical Manufacturers Association)
formed a joint committee to develop a Standard for Digital Imaging and Communications in Medicine.
This DICOM Standard was developed according to the NEMA Procedures.
This Supplement to the Standard is being developed in conjunction with IEC Subcommittee 62C Working
Group 1 (see document IEC 62C/124/NWP, January 1995), CEN TC251 Working Group 4, and the
AAPM.
The DICOM standard is structured as a multi-part document using the guidelines established in the
following document:
- ISO/IEC Directives, 1989 Part 3 - Drafting and Presentation of International Standards.
This document is a Supplement to the DICOM Standard. It is an extension to Part 3, 4 and 6 of the
published DICOM Standard which consists of the following parts:
Part 1 — Introduction and Overview
Part 2 — Conformance
Part 3 — Information Object Definitions
Part 4 — Service Class Specifications
Part 5 — Data Structures and Encoding
Part 6 — Data Dictionary
Part 7 — Message Exchange
Part 8 — Network Communication Support for Message Exchange
Part 9 — Point-to-Point Communication Support for Message Exchange
Part 10 — Media Storage and File Format
Part 11 — Media Storage Application Profiles
Part 12 — Media Formats and Physical Media
Part 13 — Print Management Point-to-Point Communication Support
These Parts are independent but related documents. Their development level and approval status may
differ. Additional parts may be added to this multi-part standard. PS3.1 should be used as the base
reference for the current parts of this standard.
DICOM RT Supplement RT IODs
Final Text, 4 June 1997
3
Item #2
Introduction to Radiotherapy Objects - will not appear in final standard
Scope and Field of Application
This supplement to the DICOM Standard defines a number of information objects applicable to the
domain of radiation oncology. The intent of these objects is to support the transfer of radiotherapy-related
data between devices found within and outside a radiotherapy department. They are not, however,
intended to support the management of the transferred data, a function which may be addressed in future
revisions of the DICOM standard.
This task of process management has not been addressed in the current draft due to the absence of a
consistent process model for a radiotherapy department, especially in an international context. As a
result, the radiotherapy information objects contain a large number of conditional and optional data
elements. Essentially the objects are intended to be used as “containers” for related radiotherapy data,
with data being added as the object flows through the department.
This Supplement specifies the following information objects:
1. A DICOM Image Information Object for Radiotherapy. It specifies the semantic content of RT
Images. It is commonly abbreviated the RT Image IOD. It also includes the corresponding Storage
SOP Class so that this IOD can be used in Network and Media Storage exchanges. The scope of the
RT Image IOD is radiotherapy images which have been obtained on a conic imaging geometry, such
as that found on conventional simulators and portal imaging devices. It can also be used for
calculated images using the same geometry, such as digitally reconstructed radiographs (DRRs).
2. A DICOM Dose Information Object for Radiotherapy. It specifies the semantic content of RT Doses.
It is commonly abbreviated the RT Dose IOD. It also includes the corresponding Storage SOP Class
so that this IOD can be used in Network and Media Storage exchanges. The scope of the RT Dose
IOD is radiotherapy dose distributions which have been calculated on a radiotherapy treatment
planning system, represented as two or three dimensional dose grids, groups of named or unnamed
dose points, isodose curves, and dose-volume histograms (DVHs).
3. A DICOM Structure Set Information Object for Radiotherapy. It specifies the semantic content of RT
Structure Sets. It is commonly abbreviated the RT Structure Set IOD. It also includes the
corresponding Storage SOP Class so that this IOD can be used in Network and Media Storage
exchanges. The scope of the RT Structure Set IOD is radiotherapy patient-related structures which
have been identified on devices such as CT scanners, virtual simulation workstations, or treatment
planning systems.
4. A DICOM Plan Information Object for Radiotherapy. It specifies the semantic content of RT
(Treatment) Plans. It is commonly abbreviated the RT Plan IOD. It also includes the corresponding
Storage SOP Class so that this IOD can be used in Network and Media Storage exchanges. The
scope of the RT Plan IOD is geometric and dosimetric data specifying a course of external beam
and/or brachytherapy treatment.
Since this document proposes changes to existing Parts of DICOM the reader should have a working
understanding of the Standard.
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