| MICHÁLEK, Jan, Pavla HANZLÍKOVÁ, Tuan TRINH and Dalibor PACÍK. Fast and accurate compensation of signal offset for T2 mapping. Magnetic Resonance Materials in Physics, Biology and Medicine. Springer International Publishing, 2019, vol. 32, No 4, p. 423-436. ISSN 0968-5243. Available from: https://dx.doi.org/10.1007/s10334-019-00737-3. |
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@article{1498876,
author = {Michálek, Jan and Hanzlíková, Pavla and Trinh, Tuan and Pacík, Dalibor},
article_number = {4},
doi = {http://dx.doi.org/10.1007/s10334-019-00737-3},
keywords = {Algorithms; Least-squares analysis; Software},
language = {eng},
issn = {0968-5243},
journal = {Magnetic Resonance Materials in Physics, Biology and Medicine},
title = {Fast and accurate compensation of signal offset for T2 mapping},
url = {https://doi.org/10.1007/s10334-019-00737-3},
volume = {32},
year = {2019}
}
TY - JOUR
ID - 1498876
AU - Michálek, Jan - Hanzlíková, Pavla - Trinh, Tuan - Pacík, Dalibor
PY - 2019
TI - Fast and accurate compensation of signal offset for T2 mapping
JF - Magnetic Resonance Materials in Physics, Biology and Medicine
VL - 32
IS - 4
SP - 423-436
EP - 423-436
PB - Springer International Publishing
SN - 09685243
KW - Algorithms
KW - Least-squares analysis
KW - Software
UR - https://doi.org/10.1007/s10334-019-00737-3
L2 - https://doi.org/10.1007/s10334-019-00737-3
N2 - T2 maps are more vendor independent than other MRI protocols. Multi-echo spin-echo signal decays to a non-zero offset due to imperfect refocusing pulses and Rician noise, causing T2 overestimation by the vendor's 2-parameter algorithm. The accuracy of the T2 estimate is improved, if the non-zero offset is estimated as a third parameter. Three-parameter Levenberg--Marquardt (LM) T2 estimation takes several minutes to calculate, and it is sensitive to initial values. We aimed for a 3-parameter fitting algorithm that was comparably accurate, yet substantially faster.
ER -
MICHÁLEK, Jan, Pavla HANZLÍKOVÁ, Tuan TRINH and Dalibor PACÍK. Fast and accurate compensation of signal offset for T2 mapping. \textit{Magnetic Resonance Materials in Physics, Biology and Medicine}. Springer International Publishing, 2019, vol.~32, No~4, p.~423-436. ISSN~0968-5243. Available from: https://dx.doi.org/10.1007/s10334-019-00737-3.
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