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. Author manuscript; available in PMC: 2010 Nov 16.
Published in final edited form as: J Magn Reson Imaging. 2009 Jul;30(1):145–152. doi: 10.1002/jmri.21809

Table 2.

Comparison of the mean T2s (in ms) of the water and fat peaks in human liver in vivo as given by STEAM and PRESS (n = 49)

Peak STEAM PRESS p
Water 35.2 (22.4–44.1) 36.8 (25.3–45.1) 0.33
CH2 (2.1 ppm) 39.2 (23.0–76.1) 20.3 (8.5–31.6) <0.001
CH2 (1.3 ppm) 75.5 (37.0–106.2) 57.1 (36.4–83.2) < 0.02
CH3 (0.9 ppm) 45.0 (27.7–78.6) 18.2 (10.8–23.7) <0.001
Composite Fat* 64.0 (35.1–92.7) 43.9 (30.3–62.9) <0.001

Note: To ensure enough signal to measure fat T2, only subjects with CH2 (1.3) / Water > 10% were analyzed (n = 20). Ranges are in parentheses.

*

Composite Fat is the sum of the uncorrected fat peaks in the range 0.5 – 3 ppm.