Wolf G L, Conard B
Physiol Chem Phys Med NMR. 1983;15(1):19-22.
Few measures of proton T1 and T2 of normal tissues performed at frequencies useful for NMR imaging have been reported. In these experiments, relaxation times were determined on a wide range of fresh canine tissues in a homogeneous field of 0.15 Tesla where the Larmour frequency for protons is 5.1 MHz. Despite similar proton densities, tissue T1 and T2 relaxation times differ strikingly. These differences allow tissue differentiation by NMR imaging although the biological basis for the different proton relaxation times from one tissue to the next is not yet understood.
在对核磁共振成像有用的频率下，对正常组织的质子T1和T2进行测量的报道很少。在这些实验中，在0.15特斯拉的均匀磁场中，对多种新鲜犬类组织测定了弛豫时间，该磁场中质子的拉莫尔频率为5.1兆赫。尽管质子密度相似，但组织的T1和T2弛豫时间却有显著差异。这些差异使得通过核磁共振成像进行组织区分成为可能，尽管不同组织之间质子弛豫时间不同的生物学基础尚不清楚。
