A novel fusion imaging system for endoscopic ultrasound.
A novel fusion imaging system for endoscopic ultrasound.
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DOI：
10.4103/2303-9027.175882
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发表时间：
2016-01
影响因子：
4.5
通讯作者：
Gruionu G
中科院分区：
文献类型：
--
作者：
Gruionu LG;Saftoiu A;Gruionu G
由于窗口尺寸小和解剖结构复杂，柔性内窥镜超声（EUS）探头在胃肠道（GI）内的导航存在问题。本研究的目的是测试一种新型融合成像（FI）系统的可行性，该系统使用电磁（EM）传感器通过新型导航算法和导管将实时EUS图像与术前计算机断层扫描（CT）数据配准。一名经验丰富的胃肠病学家和一名EUS新手操作员在胃肠道台式模型上测试了FI系统。此外，经验丰富的胃肠病学家在常规EUS检查期间进行了20例患者的病例系列。在台式模型上，经验丰富的医生和新手医生分别在67 ± 18 s和150 ± 24 s达到目标，配准误差分别为6 ± 3 mm和11 ± 4 mm。在病例系列中，总手术时间为24.6 ± 6.6 min，而达到临床目标的时间为8.7 ± 4.2 min。FI系统可用于临床，可缩短EUS手术的学习曲线，并改善困难解剖位置的导航和靶向。
Navigation of a flexible endoscopic ultrasound (EUS) probe inside the gastrointestinal (GI) tract is problematic due to the small window size and complex anatomy. The goal of the present study was to test the feasibility of a novel fusion imaging (FI) system which uses electromagnetic (EM) sensors to co-register the live EUS images with the pre-procedure computed tomography (CT) data with a novel navigation algorithm and catheter. An experienced gastroenterologist and a novice EUS operator tested the FI system on a GI tract bench top model. Also, the experienced gastroenterologist performed a case series of 20 patients during routine EUS examinations. On the bench top model, the experienced and novice doctors reached the targets in 67 ± 18 s and 150 ± 24 s with a registration error of 6 ± 3 mm and 11 ± 4 mm, respectively. In the case series, the total procedure time was 24.6 ± 6.6 min, while the time to reach the clinical target was 8.7 ± 4.2 min. The FI system is feasible for clinical use, and can reduce the learning curve for EUS procedures and improve navigation and targeting in difficult anatomic locations.