您如何注册私人DICOM标签？ [英] How do you register private DICOM tags?
问题描述
我想知道公司（例如飞利浦或西门子）如何注册私有DICOM标签？
I would like to know how does a company (say Philips or Siemens) register private DICOM tags?
我的意思是：
- 如何确保DICOM组不被其他制造商使用？假设飞利浦选择了标签（1111，00xx），那么它需要知道尚未采用 1111组。
- 之后，是否需要NEMA参与？还是任何其他管理这些私有标签的组织？
推荐答案
没有正式的注册表私人DICOM标签，但在 DICOM一致性声明是一种很好的做法。
There is no official "registry" of private DICOM tags, but publishing your private tags in the DICOM conformance statement is good practice.
为避免冲突，每个私有标签都属于一个私有创建者名称。私有创建者通常包含公司名称（或其缩写），并包含足够的信息以能够将其与特定的供应商，设备和/或软件相关联。尽管没有标准的外观，但实际上可以避免私人标签的冲突。因此，尽管不能保证私有标签的全局唯一性，但实际上私有组，私有创建者和标签偏移的组合可确保合理区分不同的私有标签。
To avoid collisions, each private tag belongs to a private creator name. The private creator usually contains the company name (or an abbreviation of it) and contains enough information to be able to relate it to a specific vendor, device and/or software. While there is no standard how it shall look, in practice this avoids collisions of private tags. So, while there is no guaranteed global uniqueness of private tags, in practice the combination of private group, private creator and tag offset ensures a reasonable distinction of different private tags.
私有创建者包含在元素编号从0x10到0xff的标签中，因此，从理论上讲，任何私有组最多可以共存240个私有创建者。私有标签元素编号始终是一个偏移量（从0x00到0xff），该偏移量与相应的私有创建者标签结合使用，因此，例如位于（0041,0011）的私有创建者的私有标签（0041,0020）具有实际标签号（0041,1120）。这在 PS3.5中进行了详细说明， DICOM标准中的第7.8节。
Private creators are contained in tags with the element number from 0x10 to 0xff, so theoretically up to 240 private creators can co-exist for any private group. The private tag element number is always an offset (from 0x00 to 0xff), which is combined with the corresponding private creator tag, so for example the private tag (0041,0020) for a private creator located at (0041,0011) has the actual tag number (0041,1120). This is described in detail in PS3.5, section 7.8 in the DICOM standard.
因此，要定义您自己的私有标签，您实际上必须定义一个私有创建者名称（在您的公司之前/组织名称以确保唯一性），然后您可以在该私有块中使用所有256个可能的标签。您不必检查标签的可用性，只需确保用于这些标签的唯一私有创建者即可。私有标签由（奇数）组号，私有创建者和标签元素偏移量标识。
So, to define your own private tags, you actually have to define a private creator name (prepend it with your company/organization name to ensure uniqueness), and than you can use all 256 possible tags in that private block. You don't have to check for the availability of the tags, just have to ensure a unique private creator that is used for these tags. A private tag is identified by the (odd) group number, the private creator and the tag element offset.
使用DICOM工具包读取和写入私有标签通常要求私有创建者与组和元素偏移一起提供，以避免任何歧义。您可以在任何允许的私人组中定义私人标签（例如，奇数组> = 9），您的私人创建者将被写入下一个免费的私人创建者标签，如下所示：
Reading and writing private tags using a DICOM toolkit usually demands that the private creator is given together with the group and the element offset to avoid any ambiguity. You can define your private tags in any allowed private group (e.g. odd groups >= 9), and your private creator will be written to the next free private creator tag, like this:
(0041,0010) SIEMENS XYZ
(0041,0011) ACME LTD XXX
(0041,0012) MY COMAPANY, MY PROD
(0041,1000) some SIEMENS private tag
(0041,1001) another SIEMENS private tag
...
(0041,1100) some ACME private tag
(0041,1101) another ACME private tag
...
(0041,1200) your own private tag
(0041,1201) another of your own private tags
如果您的DICOM框架无法为您解决此问题，则您必须自己寻找第一个免费的私有创建者标签，然后在该标签中编写私有创建者，并为您的私人标签使用相应的标签范围。当然，只有在更改现有的DICOM文件（其中可能已经包含一些私有标签）的情况下，这才有意义。
If your DICOM framework does not handle this for you, you have to look for the first free private creator tag yourself, write your private creator in that tag, and use the corresponding tag range for your private tags. Of course, this is only relevant if you change existing DICOM files which already may contain some private tags.
请注意，DICOM工具包如 DCMTK 或 pydicom 通常包含许多众所周知的私有标记（连同它们的私有创建者一起），这些私有标记是从DICOM一致性声明等收集的信息。
Note that DICOM toolkits like DCMTK or pydicom usually contain a number of well-known private tags (together with their private creators), that have been collected from DICOM conformance statements and similar information.
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