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GB/T 18987-2015: Radiotherapy equipment -- Coordinates, movements and scales
Status: Valid GB/T 18987: Evolution and historical versions
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Radiotherapy equipment -- Coordinates, movements and scales
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Basic data | Standard ID | GB/T 18987-2015 (GB/T18987-2015) | | Description (Translated English) | Radiotherapy equipment -- Coordinates, movements and scales | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | C43 | | Classification of International Standard | 11.040.50 | | Word Count Estimation | 51,556 | | Date of Issue | 2015-12-10 | | Date of Implementation | 2017-07-01 | | Older Standard (superseded by this standard) | GB/T 18987-2003 | | Regulation (derived from) | National Standard Announcement 2015 No.38 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 18987-2015: Radiotherapy equipment -- Coordinates, movements and scales---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Radiotherapy equipment - Coordinates, movements and scales
ICS 11.040.50
C43
National Standards of People's Republic of China
Replace GB/T 18987-2003
Radiation therapy equipment coordinates, movement and scale
(IEC 61217..2008, IDT)
2015-12-10 released
2017-07-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China
China National Standardization Management Committee released
Directory
Preface I
1 Scope and Purpose 1
2 coordinate system 1
2.1 Basic rules 1
2.2 fixed reference system ("f") [Figure 1a)] 2
2.3 rack coordinate system ("g") (Figure 4) 2
2.4 beam restraint or delimiter coordinate system ("b") (Figure 5) 2
2.5 wedge filter coordinate system ("w") (Figure 7) 3
2.6 X-ray image receiver coordinate system ("r") (Figure 6 and Figure 8) 3
2.7 Treatment bed coordinate system ("s") (Figure 9) 3
2.8 bed surface offset axis coordinate system ("e") (Figure 10 and Figure 11) 4
2.9 bed surface coordinate system ("t") (Figure 10, Figure 11, Figure 18 and Figure 19)
2.10 patient coordinate system ("p") [Figure 17a) and Figure 17b)] 5
3 definition of scale and digital display 5
4 Name of the equipment movement 5
5 zero position of the device
6 scale, indexing, direction and display directory (list) 7
6.1 Rotation of the frame [Fig. 14a) and Fig. 14b)] 7
6.2 Rotation of beam restraint or delimiter [Fig. 15a) and Fig. 15b)] 7
6.3 Rotation of wedge filter [Fig. 7 and Fig. 14a]] 7
6.4 Radiation field or defined radiation field 7
6.5 center of the treatment bed rotation 9
6.6 bed surface eccentric rotation 9
6.7 bed straight motion and rotation 9
6.8 X-ray image receiver movement 10
6.9 other scale 10
Appendix A (informative) Example of coordinate transformation for single coordinate system
Appendix B (informative) References 40
Appendix C (informative) Note on IEC scale changes
Appendix D (informative) Supplement and change of scale described in GB 9706.5, GB 9706.17, GB 15213 43
Appendix E (informative) Terminology 44
Appendix F (informative) Patient coordinate transformation of IEC and DICOM 46
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 18987-2003 "Radiotherapy equipment coordinate system, movement and scale", and GB/T 18987-2003 phase
The main changes are as follows.
- increases the order of 2.1.7 for the rotation order of more than one rotation;
--- modified the 2.9 bed surface coordinate system;
--- 2.10 increase in the patient coordinate system requirements;
--- modified the subject of 6.7;
- increased by 6.7.4 and 6.7.5;
- Table 2 adds Ip rotation;
Figure 1a) increases the coordinate system when all angular positions are set at zero;
Figure 17a), Figure 17b), Figure 18 and Figure 19;
Added appendix F.
This standard is equivalent to IEC 61217..2008 (including IEC 61217..1996 A1..2000 A2..2007) "Radiotherapy equipment
Coordinates, movement and scale ". The editorial differences between this and IEC 61217..2008 are as follows.
--- with decimal point "." Instead of decimal point ",";
--- the standard cited in other international standards, has been translated into our standard, the standard with the corresponding standard number instead of other
International standards;
--- This standard removes the introduction to IEC 61217 (version 1.2,.2008-04), preface, introduction and addition 2;
--- "this standard" instead of "this international standard".
Please note that some of the contents of this document may involve patents. The issuer of this document does not assume responsibility for the identification of these patents.
This standard is proposed by the State Food and Drug Administration.
This standard by the National Medical Electrical Standardization Technical Committee (SAC/TC10) centralized.
The standard drafting unit. Beijing Medical Device Testing Institute, Varian Medical Equipment (Beijing) Co., Ltd., Xi'an integrated medical technology
Limited company.
The main drafters of this standard. Wang Peichen, Hu Guangyong, Liu Zhouming, Miao Bin, Meng Qingqian.
Radiation therapy equipment coordinates, movement and scale
1 scope and purpose
This standard applies to equipment and data related to radiotherapy planning during radiotherapy, including radiotherapy planning systems, radiotherapy simulations
Machine, etc. Center gamma ray treatment equipment, etc. Central medical electron accelerator and non-isocentard device related patient image data.
The purpose of this standard is to provide a set of compatible coordinate systems for use in the entire process of long-range radiotherapy for use in this process
Of the tick marks (provided) and the movement of the device, as well as the use of computers for computer control.
2 coordinate system
For each of the main components of the equipment moving relative to the other components, as shown in Figure 1a) and listed in Table 1, there is a dedicated
Coordinate System. In addition, a fixed reference coordinate system is specified. Each of the main components (such as racks, radiant heads) is relative to oneself
The coordinate system is always static.
The perspective view of the central medical electron accelerator and radiotherapy simulator is shown in Figure 1a), Figure 14a) and Figure 14b). There are several figures
Is the isometric projection of the coordinate system. In the figure, when viewed from the origin of the coordinate system in the positive direction of an axis,
Clockwise rotation of the elliptical arrow (isometric projection) indicates positive rotation.
Note. In the description of the individual coordinate systems below, the rotation is sometimes described in counterclockwise (CCW), where the rotation axis is not the origin of the coordinate system
Point of view.
The coordinate system defined in the following terms is subject to mathematical transformation (rotation and/or translation), which can convert a point or vector coordinate in a coordinate system
To another coordinate system. See Appendix A for an example of coordinate transformation.
2.1 Basic rules
2.1.1 All coordinate systems are right hand right angle coordinate system. Coordinate system between the linear and angular motion of the positive parameters shown in Figure 2,
All coordinate systems in the figure are set to zero, and all coordinate axes are vertically upward.
2.1.2 The axes in the coordinate system are identified by an uppercase letter and a lowercase letter, and their lowercase letters identify the coordinate system in which the axis is located.
2.1.3 The coordinate system has a hierarchical structure (mother-child relationship), which means that each coordinate system is derived from another coordinate system. Altogether
The parent mat is a fixed reference coordinate system, and Figure 3 and Table 2 show the hierarchical structure, which is divided into two sub-structures. One related to the rack,
The other is related to the treatment bed.
2.1.4 The position and direction of each sub-coordinate system (d) can pass through the origin Id of its maternal (m) along one of its axes, two axes or three axes
Translation, and then around its translation after a rotation of the axis derived.
NOTE. The mechanical movement of the components of the equipment may be carried out in a different order as long as the equipment is finally stopped at the same position and direction as if it were in the order indicated
Move the same.
Figure 1b) and Figure 1c) illustrate the translation of the sub-origin Id along the parent axis axes Xm, Ym, and Zm.
Figure 1b) illustrates the translation of the origin Id along the Xm, Ym, Zm axes and the rotation about the Zd axis parallel to the Zm axis.
Figure 1c) illustrates the translation of the origin Id along the Xm, Ym, Zm axes and the rotation about the Yd axis parallel to the Ym axis.
Example. The beamer coordinate system is derived from the rack coordinate system, which in turn is derived from the fixed coordinate system. Therefore, the rotation of the rack coordinate system
Can cause the beamer coordinate system to rotate in a fixed coordinate system. The origin of the beamer coordinate system (the position of the radiation source) has a space in the fixed coordinate system
Displacement.
2.1.5 As shown in Figure 3 and Appendix A, the points defined in a coordinate system can be transformed with coordinates in their higher-level coordinate system (matrila)
Medium and low level coordinate system (sub-system) defined. So that a series of coordinate transformations can be used to calculate the beamer coordinate system
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