A Novel Magnetic Tracking Approach for Intrabody Objects
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Pages (from-to) | 4976-4984 |
Number of pages | 9 |
Journal / Publication | IEEE Sensors Journal |
Volume | 20 |
Issue number | 9 |
Online published | 9 Jan 2020 |
Publication status | Published - 1 May 2020 |
Externally published | Yes |
Link(s)
Abstract
Magnetic-based localization technique has been widely studied to provide accurate position and orientation information of intra-body objects, such as capsule endoscopes. However, the magnetic field decays rapidly, which is inversely proportional to the cubic of the distance. As a result, the tracking range is limited. In this paper, a magnetic servo approach is proposed for intra-body objects that move in a large volume, such as the whole digestive tract. A static tracking system formed with 8 Hall sensors is linked with amovable platform with motors. The proposed method utilizes the static tracking system to provide a precise positioning result within a small tracking range. When the distance between the object and the static tracking system exceeds a certain threshold, static tracking system will be controlled by the motors to move automatically based on a magnetic servo method to ensure accurate tracking results in a large range. Experimental results show that the proposed servo tracking method can provide a high accuracy of positioning and orientation results within a large range that as good as stationary method in small range. Within the range of 600 mm x 500 mm, the average position error is 2.04 mm and orientation error is 2.45º. The proposed localization method would be beneficial to the clinical examination and navigation.
Research Area(s)
- Magnetic tracking, magnetic servo, widen-scale localization, magnetic capsule endoscopes
Citation Format(s)
A Novel Magnetic Tracking Approach for Intrabody Objects. / Wang, Min; Shi, Qinyuan; Song, Shuang et al.
In: IEEE Sensors Journal, Vol. 20, No. 9, 01.05.2020, p. 4976-4984.
In: IEEE Sensors Journal, Vol. 20, No. 9, 01.05.2020, p. 4976-4984.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review