Kameda H, et al. - The clinicians performed this work to investigate if interleaved acquisition during calibration scanning could improve parallel transmission (pTx) repeatability and image homogeneity. During calibration scans of pTx for 7T brain MRI, using interleaved acquisition improved the repeatability of B₀/B₁⁺ mapping, actual flip-angle imaging (AFI), and gradient echo (GRE) images, without breath-holding (BH).