骨骼肌中水质子核磁共振弛豫时间各向异性的研究。
Study of anisotropy in nuclear magnetic resonance relaxation times of water protons in skeletal muscle.
作者信息
Kasturi S R, Chang D C, Hazlewood C F
出版信息
Biophys J. 1980 Jun;30(3):369-81. doi: 10.1016/S0006-3495(80)85102-2.
Abstract
The anisotropy of the spin-lattice relaxation time (T1) and the spin-spin relaxation times (T2) of water protons in skeletal muscle tissue have been studied by the spin-echo technique. Both T1 and T2 have been measured for the water protons of the tibialis anterior muscle of mature male rats for theta = 0, 55, and 90 degrees, where theta is the orientation of the muscle fiber with respect to the static field. The anisotropy in T1 and T2 has been measured at temperatures of 28, -5 and -10 degrees C. No significant anisotropy was observed in the T1 of the tissue water, while an average anisotropy of approximately 5% was observed in T2 at room temperature. The average anisotropy of T2 at -5 and -10 degrees C was found to be approximately 2 and 1.3%, respectively.
摘要
采用自旋回波技术研究了骨骼肌组织中水质子的自旋晶格弛豫时间（T1）和自旋自旋弛豫时间（T2）的各向异性。对于成熟雄性大鼠胫骨前肌的水质子，在θ = 0、55和90度时测量了T1和T2，其中θ是肌纤维相对于静磁场的取向。在28、-5和-10摄氏度的温度下测量了T1和T2的各向异性。在组织水的T1中未观察到明显的各向异性，而在室温下T2中观察到约5%的平均各向异性。在-5和-10摄氏度时，T2的平均各向异性分别约为2%和1.3%。
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