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Fig. 1 —Example of enhancement curve in 44-year-old woman with moderate
Crohn's disease activity shows typical enhancement pattern (ERdyn =
2.5, SoE = 2.7). Baseline intensity (SIbase = 385) increases with
passing of bolus. After a short maximum intensity, a stable elevated intensity
(SIend = 950) is reached. Time of start of administration of
contrast agent (tinject = t0), time of start of
enhancement (tstart = 36 sec), and time of maximum enhancement
(tend = 90 sec) are marked. Time interval between tend
and tstart is 
t (90 sec - 36 sec = 54 sec). SoE = slope of
enhancement, ERdyn = enhancement ratio measured on dynamic
images, SIdyn,end = signal intensity at end of enhancement on
dynamic images, SIdyn,base = baseline signal intensity on dynamic
images.
