<scp>FMRI</scp> Approaches to Mapping Cerebrovascular Reactivity: Comparison of Gradient Echo <scp>BOLD</scp> and Spin Echo <scp>BOLD</scp> With Arterial Spin Labeling

BOLD fMRI provides a semi-quantitative CVR assessment. Using SE-BOLD may be advisable, as it approximates physiological CVR more closely than GE-BOLD due to reduced sensitivity to larger veins while maintaining a similar group-level sensitivity.