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. |
Other formats:
BibTeX
LaTeX
RIS
@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.
|