该词基本定义中：“与某事物或某人相关的背景知识”倒是问题不大。
The basic definition is okay: "background information on something or someone."
论文首先介绍了背景和相关的理论知识。
The paper first introduced the background and the relation theories knowledge.
本文结合DICOM中文定义的进展，介绍与之相关的技术背景知识。
Detailed progress and related technology background are introduced in this article.
本文结合DICOM中文定义的进展，介绍与之相关的技术背景知识。
Detailed progress and related technology background are introduced in this article.
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