Table 2.

Comparison of (A) T₁ values (in ms, given by histogram peak), (B) histogram peak height and (C) full with at half maximum, for data acquired with no fat suppression (reference) and with fat suppression before and after correction using a constant b/a value (global correction) and (b/a) map (voxelwise correction). Results shown for data acquired with 70° flip angle SPIR pulse. Global correction based on b/a data computed from datasets of 5 and 2 FAs.

(A) T1 (ms)		Subject 1	Subject 2	Subject 3	Mean±std
FS=0° (reference)	GM	1694	1697	1706	1699±6
	WM	1135	1063	1156	1118±49
FS=70° (no correction)	GM	1372	1438	1454	1421±43
	WM	910	878	933	907±28
FS=70° corrected with (b/a) map	GM	1846	1831	1786	1814±31
	WM	1285	1177	1253	1238±5
FS=70° corrected with global (b/a)−5pts	GM	1785	1783	1814	1794±17
	WM	1194	1102	1175	1157±49
FS=70° corrected with global (b/a)−2pts	GM	1783	1751	1783	1772±18
	WM	1182	1090	1164	1145±49
(B) Histogram peak height with respect to reference (FS=0°)
FS=70° (no correction)	GM	81%	81%	83%	82±1%
	WM	76%	65%	66%	69±6%
FS=70° corrected with (b/a) map	GM	96%	88%	107%	97±10%
	WM	103%	78%	87%	89±13%
FS=70° corrected with global (b/a)−5pts	GM	114%	107%	111%	111±4%
	WM	110%	85%	88%	94±14%
FS=70° corrected with global (b/a)−2pts	GM	114%	105%	109%	109±4%
	WM	108%	85%	87%	93±13%
(C) Histogram FWHM with respect to reference (FS=0°)
FS=70° (no correction)	GM	137%	139%	149%	142±7%
	WM	137%	155%	173%	155±18%
FS=70° corrected with (b/a) map	GM	106%	117%	117%	113±6%
	WM	100%	133%	129%	121±18%
FS=70° corrected with global (b/a)−5pts	GM	93%	108%	108%	103±8%
	WM	93%	122%	134%	116±21%
FS=70° corrected with global (b/a)−2pts	GM	93%	99%	116%	103±12%
	WM	93%	122%	134%	116±21%