This pilot study was performed to compare healthy and colorectal cancer samples by investigating R1 NMRD profiles acquired with Fast Field-Cycling (FFC) NMR relaxometry. We collected samples from 18 patients and found a significant difference (P=0.001) in the relaxation rates between normal and colorectal cancer tumours below 100 kHz (2.3uT), while this difference became smaller with increasing the magnetic field strengths and disappeared above 1 MHz (23 uT). This dispersion profile may lead to great potential for diagnosis, staging and monitoring treatment response.
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