@inproceedings{0c576716127b4fcdbb4c04a3f42a7b28,
title = "Perturbation analysis of the effects of B1+ errors on parallel excitation in MRI",
abstract = "Design of RF pulses for parallel excitation using phased array transmit coils in MRI requires the B1+ maps that are estimated from B1+ mapping experiments. This paper characterizes the effects of B1+ mapping errors on the resulting excitation pattern using a small perturbation analysis based on linearization of the Bloch equation. The accuracy of the proposed perturbation analysis is validated by Bloch equation simulations based on experimental B1+ maps. The perturbation analysis builds a transparent connection between the B 1+ mapping errors and the resulting excitation errors, and can be used to study the robustness of the designed RF pulses to B 1+ mapping errors. The proposed method may also supply useful metrics for designing RF pulses that are robust to B1 + mapping errors.",
author = "Chao Ma and Dan Xu and King, {Kevin F.} and Liang, {Zhi Pei}",
year = "2009",
month = jan,
day = "1",
doi = "10.1109/IEMBS.2009.5333196",
language = "English (US)",
isbn = "9781424432967",
series = "Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009",
publisher = "IEEE Computer Society",
pages = "4064--4066",
booktitle = "Proceedings of the 31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society",
note = "31st Annual International Conference of the IEEE Engineering in Medicine and Biology Society: Engineering the Future of Biomedicine, EMBC 2009 ; Conference date: 02-09-2009 Through 06-09-2009",
}