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European Radiology Experimental
Fig. 3 | European Radiology Experimental

Fig. 3

From: Timing optimization of low-dose first-pass analysis dynamic CT myocardial perfusion measurement: validation in a swine model

Fig. 3

Gamma fit time-to-peak data as compared to the one half injection time data. A total of 98 measurements from 28 animals were obtained, and the time-to-peak of the aortic enhancement in each case was retrospectively assessed through automatic gamma variate fitting. The average gamma fit time-to-peak data from each animal was then quantitatively compared to the ideal bolus timing theory through regression analysis. Tg time-to-peak of the aortic enhancement, defined as the time between the peak of the second derivative of the gamma fit and the true peak of the gamma fit, Ti contrast injection time, RMSD root-mean-square deviation, RMSE root-mean-square error

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