Metabolite Mapping with Extended Brain Coverage Using a Fast Multisection MRSI Pulse Sequence and a Multichannel Coil

Table 3

Relative errors (%) of spectral fitting of the simulated signal in the frequency domain, caused by truncation effects and by wiggles, respectively.

Lineshape	Original 256 points			Zero-padding to 1024 points
	NAA	Cr	Ch	NAA	Cr	Ch
Lorentzian	4.72	2.04	4.34	4.29	3.23	0.82
Gaussian	4.06	0.19	1.72	4.38	2.10	0.44
Voigtian	8.45	15.31	6.07	7.00	9.33	0.59