Fast and accurate compensation of signal offset for T2 mapping

J 2019

Fast and accurate compensation of signal offset for T2 mapping

MICHÁLEK, Jan; Pavla HANZLÍKOVÁ; Tuan TRINH a Dalibor PACÍK

Základní údaje

Originální název

Fast and accurate compensation of signal offset for T2 mapping

Autoři

MICHÁLEK, Jan (203 Česká republika, garant, domácí); Pavla HANZLÍKOVÁ (203 Česká republika); Tuan TRINH (203 Česká republika, domácí) a Dalibor PACÍK (203 Česká republika)

Vydání

Magnetic Resonance Materials in Physics, Biology and Medicine, Springer International Publishing, 2019, 0968-5243

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10201 Computer sciences, information science, bioinformatics

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 1.956

Kód RIV

RIV/00216224:14330/19:00109168

Organizační jednotka

Fakulta informatiky

DOI

http://dx.doi.org/10.1007/s10334-019-00737-3

UT WoS

000476510700002

EID Scopus

2-s2.0-85061291117

Klíčová slova anglicky

Algorithms; Least-squares analysis; Software

Štítky

14110225, cbia-web, podil

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 17. 10. 2024 11:31, RNDr. Pavel Šmerk, Ph.D.

Anotace

V originále

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.

Návaznosti

90062, velká výzkumná infrastruktura

Název: Czech-BioImaging

Citovat

MICHÁLEK, Jan; Pavla HANZLÍKOVÁ; Tuan TRINH a Dalibor PACÍK. Fast and accurate compensation of signal offset for T2 mapping. Magnetic Resonance Materials in Physics, Biology and Medicine. Springer International Publishing, 2019, roč. 32, č. 4, s. 423-436. ISSN 0968-5243. Dostupné z: https://dx.doi.org/10.1007/s10334-019-00737-3.

@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 a 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, roč.~32, č.~4, s.~423-436. ISSN~0968-5243. Dostupné z: https://dx.doi.org/10.1007/s10334-019-00737-3.

Přehled o publikaci