Patent ID: 9733327
Date: 2017-08-15
CPC Classifications: G01N,G01R,H01L

Claim:
1. An NMR imaging device, comprising: a probe having a space for housing a sample; a magnetic field generating portion configured to generate a static magnetic field and a gradient magnetic field in the space of the probe; a pulse application portion configured to apply a π pulse in a multiplexed manner at a time interval 2τ to the sample placed in the space in which the static magnetic field and the gradient magnetic field are generated as a generated magnetic field; and an image processing portion configured to receive a nuclear magnetic resonance (NMR) signal output from the sample that is continuously applied with multiple pulses as multiplexed π pulses, fit with a straight line an attenuation curve of intensity of the NMR signal that is obtained after a lapse of a predetermined period of time from the application of the multiplexed π pulses to obtain a gradient of the straight line, determine a transverse relaxation time (T the NMR signal and the transverse relaxation time (T W(t): NMR signal intensity T t: time the time interval 2τ of the π pulse and a frequency f of noise received by a nuclear spin in the sample from an external environment being expressed by the following expression (2), f: frequency of noise received by nuclear spin τ: a half of π pulse interval.