Absolute metabolite quantification by in vivo NMR spectroscopy: IV. Multicentre trial on MRSI localisation tests.
The difference between the experimental and theoretical spatial response function (SRF) of a narrow tube with water is used for a localization test for magnetic resonance spectroscopic imaging (MRSI). From this difference a quantitative performance parameter is derived for the relative amount of signal within a limited region in the field of view. The total signal loss by the MRSI experiment and eddy currents is described by a parameter SL derived from the signal intensities of two echoes. Results of a European multi-centre trial show that this approach is suited for assessment of MRSI localization performance.
Bovée
W
W
Department of Applied Physics, University of Technology, Delft, The Netherlands. bove@si.tn.tudelft.nl
Canese
R
R
Decorps
M
M
Forssell-Aronsson
E
E
Le Fur
Y
Y
Howe
F
F
Karlsen
O
O
Knijn
A
A
Kontaxis
G
G
Kügel
H
H
McLean
M
M
Podo
F
F
Slotboom
J
J
Vikhoff
B
B
Ziegler
A
A
D000818:Animals; D002985:Clinical Protocols; D003627:Data Interpretation, Statistical; D005060:Europe; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*