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To address the limitations of spinal cord imaging at ultra‐high field (UHF) due to time‐consuming parallel transmit (pTx) adjustments. This study introduces calibration‐free offline computed universal shim modes that can be applied seamlessly for different pTx RF coils and spinal cord target regions, substantially enhancing spinal cord imaging efficiency at UHF.

A library of channel‐wise relative B1+$$ {B}_1^{+} $$ maps for the cervical spinal cord (six datasets) and thoracic and lumbar spinal cord (nine datasets) was constructed to optimize transmit homogeneity and efficiency for these regions. A tailored B₀ shim was optimized for the cervical spine to enhance spatial magnetic field homogeneity further. The performance of the universal shims was validated using absolute saturation based B1+$$ {B}_1^{+} $$ mapping and high‐resolution 2D and 3D multi‐echo gradient‐recalled echo (GRE …