Fig. 5

Relation between T2* and Iron Concentration Determined Using ssT2* and Absolute T2* with Various Cut-offs. A T2* and iron concentration ([Fe]_Hemo) determined with ssT2* at cut-offs of mean-2SD, mean-3SD and mean-4SD. B T2* and iron concentration determined with absolute T2* at cut-offs of 15 ms, 20 ms and 25 ms. Note that both ssT2* and absolute T2* approaches yield a high correlation between log (T2*) and -log ([Fe]_Hemo). However, note that the slope of the absolute T2* approach is markedly lower compared to ssT2* approach, regardless of the threshold, which supports the notion that the absolute T2* has a lower sensitivity compared to ssT2* approach for detecting changes in iron concentration. The regression lines are shown in blue and 95% confidence are shown in black