Two-dimension (2D) diffusion-relaxation (D-T2) correlation measured by a low-cost, portable single-sided NMR system can separate fat and water in biological tissues (for example for liver steatosis detection). Diffusion-editing CPMG sequence is commonly used for such measurement. Recently, a novel approach is proposed to measure the D-T2 correlation using the simplest CPMG-only sequence. The CPMG-only sequence is less sensitive to motion, and can extend to systems with more imperfect magnetic and radiofrequency fields. This work compares the proposed CPMG-only sequence with the traditional diffusion-editing SE-CPMG sequence. Results show the SE-CPMG and CPMG-only sequences can achieve comparable performance on water-fat separation.
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