Within‐ and between‐session reproducibility of GABA measurements with MR spectroscopy

Purpose The reproducibility of the MEGA‐PRESS (MEshcher‐GArwood Point RESolved Spectroscopy) MR spectroscopy sequence for the measurement of gamma‐ aminobutyric acid (GABA) is addressed, focusing on optimizing the number of repetitions at two voxel locations in the human brain and associated possibilities in analysis tools. Materials and Methods Two 20‐min MEGA‐PRESS acquisitions were run (echo time = 68 ms, repetition time = 1800 ms,...