Real-time endoscopic image orientation correction system using an accelerometer and gyrosensor.
Real-time endoscopic image orientation correction system using an accelerometer and gyrosensor.
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DOI：
10.1371/journal.pone.0186691
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发表时间：
2017
期刊：
影响因子：
3.7
通讯作者：
Kim HC
中科院分区：
文献类型：
--
作者：
Lee HC;Jung CW;Kim HC
内窥镜图像的空间取向与医生的工作环境之间的差异可能使得难以解释内窥镜图像。在这项研究中，我们开发和评估了一种设备，使用加速度计和陀螺仪传感器校正内窥镜图像的方向。重力加速度和角速度从连接到内窥镜手柄的加速度计和陀螺仪传感器中检索。使用具有传输延迟补偿的卡尔曼滤波器计算内窥镜手柄的旋转角度。通过将来自捕获图像的光学旋转角与从传感器输出计算的旋转角进行比较，使用照相机执行定向校正系统的技术评估。对于临床实用性测试，15名麻醉科住院医师在使用和不使用方向校正系统的情况下对气道模型进行了视频内窥镜检查。参与者报告了放置在气道模型的左主支气管、右主支气管和右上支气管处的纸上的数字。参与者报告数字的正确性和总时间被记录下来。在技术评价期间，计算的旋转角度误差小于5度。在临床实用性测试中，与不使用系统相比，使用方向校正系统时时间显著缩短（中位数，52秒vs. 76秒; P = 0.012）。在这项研究中，我们开发了一个实时内窥镜图像方向校正系统，显着提高医生的表现在视频内窥镜检查。
The discrepancy between spatial orientations of an endoscopic image and a physician’s working environment can make it difficult to interpret endoscopic images. In this study, we developed and evaluated a device that corrects the endoscopic image orientation using an accelerometer and gyrosensor. The acceleration of gravity and angular velocity were retrieved from the accelerometer and gyrosensor attached to the handle of the endoscope. The rotational angle of the endoscope handle was calculated using a Kalman filter with transmission delay compensation. Technical evaluation of the orientation correction system was performed using a camera by comparing the optical rotational angle from the captured image with the rotational angle calculated from the sensor outputs. For the clinical utility test, fifteen anesthesiology residents performed a video endoscopic examination of an airway model with and without using the orientation correction system. The participants reported numbers written on papers placed at the left main, right main, and right upper bronchi of the airway model. The correctness and the total time it took participants to report the numbers were recorded. During the technical evaluation, errors in the calculated rotational angle were less than 5 degrees. In the clinical utility test, there was a significant time reduction when using the orientation correction system compared with not using the system (median, 52 vs. 76 seconds; P = .012). In this study, we developed a real-time endoscopic image orientation correction system, which significantly improved physician performance during a video endoscopic exam.
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DOI：
10.1109/titb.2011.2164088
发表时间：
2012-01-01
影响因子：
--
作者：
Ren, Hongliang;Rank, Denis;Kazanzides, Peter
通讯作者：
Kazanzides, Peter
DOI：
10.1007/s004649900920
发表时间：
1999-02-01
期刊：
SURGICAL ENDOSCOPY-ULTRASOUND AND INTERVENTIONAL TECHNIQUES
影响因子：
--
作者：
Holden, JG;Flach, JM;Donchin, Y
通讯作者：
Donchin, Y
DOI：
10.1007/s11548-011-0603-3
发表时间：
2012-03-01
影响因子：
3
作者：
Warren, Alexander;Mountney, Peter;Yang, Guang-Zhong
通讯作者：
Yang, Guang-Zhong
影响因子：
3.2
作者：
Zhang, Likun;Cao, Caroline G. L.
通讯作者：
Cao, Caroline G. L.
影响因子：
3.8
作者：
Hummel, J;Figl, M;Birkfellner, W
通讯作者：
Birkfellner, W