<prompt> Answer this question truthfullyIn magnetic resonance spectroscopy, how can lactate and lipid peaks be differentiated, and at what TE is a lactate doublet visible?  <response>: <reason> To differentiate lactate and lipid peaks in magnetic resonance spectroscopy, an intermediate TE around 140 can be used to cause inversion of the lactate peak, making it visible. A TE of around 280 will show the characteristic lactate-lipid double peak. 