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首页> 外文期刊>Computer Methods and Programs in Biomedicine: An International Journal Devoted to the Development, Implementation and Exchange of Computing Methodology and Software Systems in Biomedical Research and Medical Practice >Novel recovery mechanism for the restoration of image contents in teleconsultation sessions
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Novel recovery mechanism for the restoration of image contents in teleconsultation sessions

机译：用于远程会诊中图像内容恢复的新型恢复机制

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摘要

In teleconsultation sessions, a critical dependency exists between the image contents and the type and sequential order of the image processing commands used by the various participants. Accordingly, for re-entrant/late users, a significant challenge exists in restoring the image contents of the teleconsultation session in such a way that all the participants maintain a consistent view of the medical images. In this paper, this problem is resolved using a novel recovery mechanism comprising two major components, namely an enhanced content-recording scheme designated as three-level indexing hierarchy (TIH) and a prioritized recovery policy. TIH maintains a record of all the commands which affect the appearance of each of medical images such that when a restoration process is required, these image-affect commands can be rapidly identified and transmitted to the user. As a result, a significant reduction can be gained in both the command identification/transmission time and the image restoration time compared to traditional recovery schemes, which restore the contents by re-executing all of the commands invoked during the course of the session. The prioritized recovery policy further reduces the time required for re-entrant/late users to catch up with the on-going session by utilizing the cross-linkage design within the TIH architecture to restore the foreground image (i.e. the image under current discussion) before the background images are restored (i.e. the remaining images in the session). To resolve the problem which arises when a background image is selected as the new foreground image before the restoration process is completed, the prioritized recovery policy maintains a set of resuming pointers for each re-entrant/late user to facilitate the process of suspending the current restoration process and switching to the restoration of the new foreground image. The evaluation results confirm that the TIH architecture and prioritized recovery policy yield a significant reduction in the recovery-latency delay compared to that required by traditional message-logging restoration systems.
机译：在远程会诊会话中，图像内容与各种参与者使用的图像处理命令的类型和顺序之间存在关键的依存关系。因此，对于重新进入/后期的用户而言，以所有参与者保持医学图像的一致视图的方式来恢复远程会诊会话的图像内容方面存在重大挑战。在本文中，使用一种新颖的恢复机制解决了此问题，该机制包括两个主要组件，即指定为三级索引层次结构（TIH）的增强型内容记录方案和优先的恢复策略。 TIH保留了影响每个医学图像外观的所有命令的记录，以便在需要恢复过程时，可以快速识别这些图像影响命令并将其发送给用户。结果，与传统的恢复方案相比，可以通过重新执行在会话过程中调用的所有命令来恢复内容，从而大大减少了命令识别/传输时间和图像恢复时间。优先级恢复策略通过利用TIH架构内的交叉链接设计来还原前景图像（即当前讨论中的图像），从而进一步减少了重新进入/后期用户赶上正在进行的会话所需的时间。恢复背景图像（即会话中的其余图像）。为了解决在还原过程完成之前将背景图像选择为新的前景图像时出现的问题，优先级恢复策略为每个重新进入/后期用户维护了一组恢复指针，以方便暂停当前进程。恢复过程并切换到新前景图像的恢复。评估结果证实，与传统消息记录恢复系统相比，TIH体系结构和优先级恢复策略可显着减少恢复延迟。

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