X9 ASC TR 51-2018的第一个版本是在2006年之前开发的，完全关注图像质量。2018版已经更新，以反映当前对检查图像质量的理解和最佳实践。本报告还进行了扩展，包括支票交易数据完整性，这扩大了对图像文件可用性和MICR信息内容质量的关注，MICR信息内容包含在用于交换或存放支票交易的图像现金信函文件中的支票图像数据中。2006年的版本也非常技术化，对于金融行业的典型商业用户来说很难理解。为了便于业务用户更好地理解，创建了执行摘要条款。此版本提供对业务用户重要的关键信息点的执行摘要。 执行摘要还提供了更新和更改，以反映当前的理解和最佳做法。原条款现移至本技术报告附件。它们仍然是原始内容。

The first version of X9 ASC TR 51-2018 was developed prior to 2006 and focused entirely on image quality. The 2018 version has been updated to reflect the current understanding and best practices of check image quality. This report has also been expanded to include check transaction data integrity that expands concerns for the image file usability and the quality of the MICR information content that is included with the check image data within Image Cash Letter files used for the exchange or deposit of check transactions. The 2006 version was also very technical and difficult to understand for the typical business user in the financial industry. To facilitate a better understanding for the business user, an executive summary clause has been created. This version gives an executive summary of the key information points important to the business user. The executive summaries also provide updates and changes to reflect the current understandings and best practices. The original clauses are now moved to the Annexes of this technical report. They remain as original content.