核磁共振信号与流体含量和孔径分布的关系

The amplitude of the nuclear magnetic signal is proportional to the fluid content, and the signal attenuation reflects the fluid environment. When the relaxation time of the body is slow and the surface relaxation is strong, the relaxation time T1 or T2 is proportional to S/V (contact area between fluid and pore wall/volume of fluid), and the relaxation time spectrum reflects the true aperture distribution.