西门子研制的CT结肠镜增强放射科医生观察息肉的能力

一种新型结肠镜配备了“息肉增强观察”(polyp-enhanced viewing, PEV)软件，被设计用作能够自动鉴别结肠病变的【除了放射科医生之外的】第二位阅读者。

配备PEV软件的syngo结肠镜系统，是由德国西门子医疗有限公司研制成功的。该系统允许放射科医生对患者资料进行计算机辅助的“第二次分析”，从而增加了检测精确性并且减少了阅读次数。

为了优化工作流程，当放射科医生结束初次阅读的时候，PEV结果就已经准备好供【放射科医生】再次复习。除了放射科医生第一次阅读时候标记出的所有的病变之外，PEV工具凸现出那些没有被放射科医生注意的可能病变，以及PEV工具没有观察到而放射科医生提示的潜在病变。

当计算机X线断层扫描结肠镜(computed tomography colonography, CTC)逐渐被认可做为传统结肠镜升级换代工具的时候，以及对早期诊断疾病的要求不断增加，放射科医生就需要许多能够加快工作流程的技术，例如PEV。

美国克利夫兰诊所(the Cleveland Clinic, OH, USA)腹部影像科的主任Mark Baker医学博士说：“阅读CTC是一种要求十分严格的艰苦劳动，需要注意力高度集中。阅读疲劳是一种客观存在的困难。考虑到美国缺乏足够的放射科医生来分析与日俱增的CT扫描资料，任何辅助分析CTC的帮助都将得到放射科医生的热烈欢迎。”

该系统优化工作流程的其它特性包括：自动测量息肉和对未不可见区域的可视化操作。“这些工具将加速诊断工作流程。手工测量息肉是一种耗时费力的工作，而我们开始治疗之前需要知道息肉的大小。可靠的自动化工具使得CTC诊断更加迅速。”德国门斯特大学诊所(the University Clinic, Muenster, Germany)的Johannes Wessling医学博士如此评价说。

CT Colonography With Enhanced Polyp Viewing
 
A new colonography system with polyp-enhanced viewing (PEV) software is designed as a second-reader tool for automated identification of lesions in the colon.

The syngo colonography system with PEV, developed by Siemens Medical Solutions (Erlangen, Germany), allows the radiologist to make a computer-assisted “second pass” over the patient data, thereby attempting to increase detection accuracy and reduce reading times.

Focused on optimizing workflow efficiency, PEV results are ready for reviewing as the radiologist confirms the end of the primary read. The PEV tool then highlights potential lesions that were not tagged by the radiologist, in addition to all potential lesions marked by the radiologist during the first read, and also indicated potential lesions tagged by the radiologist that were not visualized by the PEV tool.

As computed tomography colonography (CTC) gains increasing acceptance as an alternative to traditional colonoscopy and demand rises for early detection, radiologists have a lot to gain from workflow-enhancing techniques such as PEV.

“Reading CTC is a demanding, meticulous process, requiring focused and extremely attentive concentration. Reader fatigue is a real problem. Given the fact that there are not enough radiologists to interpret the growing number of CT scans performed in the United States, any assistance in interpreting CTC will be embraced enthusiastically by radiologists,” said Mark Baker, M.D., head of abdominal imaging at the Cleveland Clinic (OH, USA).

Additional workflow enhancements to the system include automated polyp measurement and visualization of unseen regions. “These tools will really speed up may diagnostic workflow. It is time-consuming to measure polyps manually, and we need to know polyp size before recommending treatment. Reliable automated tools will make CTC diagnosis quicker,” observed Johannes Wessling, M.D., from the University Clinic, Muenster, Germany.