Sodium (23Na) ion distribution plays a fundamental role in biological processes, in particular in myocardial function. 23Na MRI provides noninvasive information about the total tissue sodium concentration. However, short relaxation times, low signal-to-noise ratio, breathing and heart motion render quantitative cardiac 23Na MRI challenging and result in long acquisition times. We present a method to compensate for respiratory motion in 23Na MRI by adding a linear phase in k-space with the goal to determine myocardial tissue sodium concentration. This enables a reduced measurement time for quantitative cardiac 23Na MRI compared to retrospective sorting into one respiratory state.