IMAGING METHOD AND APPARATUS USING NUCLEAR MAGNETIC RESONANCE

摘要

: An NMR imaging apparatus detects a nuclear spin resonance signal from an object placed in a magnetic field to produce images of the object. At an instant when the spins come into phase after signal detection by a first spin excitation, RF magnetic field pulses are applied for rotating the direction of the spin to that opposite its initial state. The spin excitation and the signal direction change are then applied a second time to measure different data in relation to the effect of the relaxation time from the first measurements. By repeating these sequences, it is possible to produce a plurality of images, such as an intensity image and a relaxation time enhanced image.