The parameter arrival time (AT), time to peak enhancement (TTP), wash-in time (WIT), enhanced intensity (EI), and ascending slope (AS) were measured.
A preliminary dynamic contrast-enhanced MRI study has documented normalisation of peak enhancement values following therapy [ 19].
The parameters affecting the peak enhancement such as pH, modifier amount, accumulation time, scan rate and concentration impacts were studied.
The peak enhancement in the nightside appears about 4 h after the solar flare onset.
Therefore, in oncocytoma, the degree of tumoural enhancement and the timing of peak enhancement are variable.
The results also show that the peak enhancement gradually moves from low latitudes to higher latitudes.
Time to peak enhancement T peak = 1 α log ( 1 + α β ).
Aortopopliteal bolus transit times were calculated by subtracting the time to peak enhancement in the popliteal arteries from that in the aorta.
However, for the dusk region (18 LT), the peak enhancement occurs later, at approximately 2.5 h after the flare onset.
With increase in interparticle spacing, the peak enhancement shifts to lower wavelengths and shows less pronounced peak splitting.
The slower the saline-chaser injection rate, the longer the duration of 90% peak enhancement: 13.6, 12.2, and 11.7 s for protocols B, C, and D, respectively (P > 0.05).
