Fig 3.

Scatter- and Bland-Altman plots comparing CBV estimates for the (½ + ½) dosing scheme at 3T (A and B) and at 1.5T (C and D) using the intermediate (red) and low flip angle (blue) protocols. At both 3T and 1.5T, CBV values measured using an intermediate flip angle were consistently underestimated, yielding lower accuracy and precision (API = 0.67 and 0.48), respectively. The use of the low flip angle protocol improved both CBV accuracy and precision at 3T (API = 0.82) and 1.5T (API = 0.80). Leakage correction was applied using BSW.