Cerebrovascular reactivity mapping for brain tumor presurgical planning

Figure 6 Blood Oxygen Level Dependent breath-hold cerebrovascular reactivity map, overlaid on postcontrast 3D MPRAGE anatomic axial images. The Blood Oxygen Level Dependent cerebrovascular reactivity (CVR) map was thresholded at positive 0.25% signal change. Note the absence of CVR just anterior and posterior to the surgical resection cavity in the right frontal convexity (in the expected location of the foot representation area of the primary motor cortex, as well as decreased CVR along the medial right frontal convexity, corresponding to the supplementary motor area.