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. Author manuscript; available in PMC: 2026 Feb 4.
Published in final edited form as: Magn Reson Med. 2025 Oct 22;95(3):1478–1488. doi: 10.1002/mrm.70133

FIGURE 2.

FIGURE 2

Effect of OXCEST-based B0 correction on post-exercise MTRasym, acquired at 10 s temporal resolution over a 10-min recovery period. Shown are pixel-wise MTRasymPost maps (in %) from a representative axial slice of the lower leg encompassing the soleus (Sol), lateral gastrocnemius (LG), and medial gastrocnemius (MG) muscles: (A) without B0 correction, and (B) with B0 correction. Without B0 correction, MTRasym values frequently extended beyond physiologically plausible limits. Following B0 correction, elevated MTRasym observed immediately post-exercise reflects an increased Cr level, which decays exponentially over time. This spatiotemporally resolved mapping of Cr dynamics enables visualization of muscle-specific variations in mitochondrial OXPHOS capacity.