Ultrasound self-calibration
Ultrasound self-calibration
复制标题
超声波自校准
DOI：
--
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
Gregory Hager
中科院分区：
文献类型：
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作者：
E. Boctor;I. Iordachita;G. Fichtinger;Gregory Hager
本文介绍了一种使用封闭式解决方案进行 2D 和 3D 超声 (US) 探头校准的新稳健方法。在校准之前，位置传感器连接到探头，用于标记每个图像/体积的空间位置和方向。同时，图像信息用于确定目标在探头坐标中的位置。校准过程使用这两条信息来确定扫描平面相对于位置传感器的变换（平移、旋转和缩放）。我们引入了一种对跟踪的美国系统进行实时体内质量控制的新颖方法，以便捕获临床过程中的注册失败。实际上，我们动态地重新校准跟踪的 US 系统的旋转、比例因子和平面内位置偏移（高达比例因子）。我们通过捕获所得校准矩阵中的差异来检测这些参数的任何意外变化，从而确保跟踪系统的质量（准确性和一致性）。重新校准时不使用体模。当扫描对象时，我们在后台执行质量控制任务，对临床用户透明。我们介绍了概念、数学公式和体外实验评估。这种新方法可以在保证跟踪超声性能的准确、一致和可靠方面发挥重要作用。
This paper describes a new robust method for 2D and 3D ultrasound (US) probe calibration using a closed-form solution. Prior to calibration, a position sensor is attached to the probe and is used to tag each image/volume with its position and orientation in space. At the same time, image information used to determine target location in probe coordinates. The calibration procedure uses these two pieces of information to determine the transformation (translation, rotation, and scaling) of the scan plane with respect to the position sensor. We introduce a novel methodology for real-time in-vivo quality control of tracked US systems, in order to capture registration failures during the clinical procedure. In effect, we dynamically recalibrate the tracked US system for rotation, scale factor, and in-plane position offset up to a scale factor. We detect any unexpected change in these parameters through capturing discrepancies in the resulting calibration matrix, thereby assuring quality (accuracy and consistency) of the tracked system. No phantom is used for the recalibration. We perform the task of quality control in the background, transparently to the clinical user while the subject is being scanned. We present the concept, mathematical formulation, and experimental evaluation in-vitro. This new method can play an important role in guaranteeing accurate, consistent, and reliable performance of tracked ultrasound.
影响因子：
2.9
作者：
D. Muratore;Robert L. Galloway
通讯作者：
D. Muratore;Robert L. Galloway
影响因子：
2.9
作者：
DETMER, PR;BASHEIN, G;STRANDNESS, DE
通讯作者：
STRANDNESS, DE