An MR-Compatible Stage for Respiratory Motion Emulation. Issue 1 (July 2017)

• Record Type: Journal Article
• Authors: Simonelli, James; Lee, Yu-Hsiu; Mikaiel, Samantha; Chen, Cheng-Wei; Li, Xinzhou; Sung, Kyung; Lu, David; Wu, Holden; Tsao, Tsu-Chin
• Is Part Of: IFAC-PapersOnLine. Volume 50:Issue 1(2017)
• Page Start: 6073
• Page End: 6078
• Publication Date: 2017-07
• Subjects: Mechatronic systems -- medical applications -- robotic manipulators -- learning control -- hydraulic actuators; Automatic control -- Periodicals; 629.805
• DOI: 10.1016/j.ifacol.2017.08.1381
• Languages: English
• ISSNs: 2405-8963

Abstract

Abstract: We present the development of a system that physically emulates respiratory motion for phantoms under Magnetic Resonance Imaging (MRI). The system is designed to be inherently MR-compatible—with no ferrous materials or electromagnetic actuators present in the exam room—and uses hydrostatic actuators to control motion of the phantom. MR-compatibility of the system is verified through both signal-to-noise ratio (SNR) and imaging distortion tests, and several control strategies are then implemented to achieve tracking of prerecorded respiratory motion profiles obtained from a human subject.