Figure 1:

Coregistered color parametric maps of native bookend MR imaging–, smoothed bookend MR imaging–, and PET-derived qCBF images of a single section in patient 11, a 42-year-old woman with bilateral middle cerebral artery stenoses. Imaging and corresponding linear regression and Bland-Altman analysis demonstrate strong agreement between bookend-calibrated MR imaging and PET CBF data.