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. Author manuscript; available in PMC: 2010 Jun 28.
Published in final edited form as: Curr Opin Hematol. 2007 May;14(3):183–190. doi: 10.1097/MOH.0b013e3280d2b76b

Figure 1. Gradient echo images of liver collected at four different echo times.

Figure 1

The top four images were collected from a patient having a liver iron of 6 mg/g. The bottom four images were collected from a normal volunteer. All images darken as the echo time (TE) lengthens, but the iron-heavy tissue darkens faster. The half life of this process is called T2* and the rate is called R2* (R2*=1000/T2*).