Schematics of a compact high-Tc SQUID-based NMR detection system in microtesla fields.
(a) 0.5 ml of water for NMR detection, (b) wave sequences for NMR detection, (c) NMR signal measured by 660 turns of the pick-up coil with a wire diameter of 0.45 mm.
NMR signals as a function of the number of turns in the pick-up coil.
(a) Normalized NMR signal under simulation as a function of the number of turns in the pick-up coil, and (b) experimental results as a function of the number of turns in the pick-up coil.
NMR intensity as a function of the pre-polarizing duration time, tBp for liver's normal tissue and tumor tissue with different weights.
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