The effect of transponder motion on the accuracy of the Calypso Electromagnetic localization system

International Journal of Radiation Oncology, Biology, Physics
Martin J MurphyJ Nelson Wright

Abstract

To determine position and velocity-dependent effects in the overall accuracy of the Calypso Electromagnetic localization system, under conditions that emulate transponder motion during normal free breathing. Three localization transponders were mounted on a remote-controlled turntable that could move the transponders along a circular trajectory at speeds up to 3 cm/s. A stationary calibration established the coordinates of multiple points on each transponder's circular path. Position measurements taken while the transponders were in motion at a constant speed were then compared with the stationary coordinates. No statistically significant changes in the transponder positions in (x,y,z) were detected when the transponders were in motion. The accuracy of the localization system is unaffected by transponder motion.

References

Mar 12, 2004·Physics in Medicine and Biology·Gregory C SharpHiroki Shirato
Feb 15, 2005·International Journal of Radiation Oncology, Biology, Physics·James M BalterTimothy P Mate
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May 22, 2007·International Journal of Radiation Oncology, Biology, Physics·Dale W LitzenbergJean Pouliot

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Citations

Mar 26, 2013·International Journal of Radiation Oncology, Biology, Physics·Amish P ShahSanford L Meeks
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Jan 6, 2022·Journal of Applied Clinical Medical Physics·Chunying LiXinye Ni

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