|Vol. 4, Issue 2, Article 2||Sanelli, P., Shetty, S. & Lev, M.|
Figure 5: Interobserver reliability for CBF quantification between two trained, independent physicians, from different institutions, who constructed CTP datasets using standard post-processing guidelines (15). The x-axis represents the 10 different patientís datasets, and the y-axis represents mean CBF values (mL/100gm/min) for each patient, measured at IDENTICAL ROI locations within the infarcted territories. The mean CBF, CBV and MTT quantitative values were not statistically different between the two observers (p<0.001) (16). The variability in perfusion parameters among the different patients were reflected in each of the observersí values (blue and magenta plots). There was a strong correlation between quantitative CTP values for maps created at the different institutions, representing good interobserver reliability.
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