[核磁共振（NMR）中的白与黑。脉冲序列及其在NMR图像中的意义]

[White and black in nuclear magnetic resonance (NMR). Impulse sequences and their significance in the NMR image].

作者信息

Biondetti P R, Borasi G, Rabassini A

出版信息

Radiol Med. 1985 Mar;71(3):110-7.

Abstract

In order to understand how pulse sequences affect what is black and what is white in Nuclear Magnetic Resonance (NMR) images, the tissue parameters (proton density; relaxation times T1 and T2) are related to the operator selectable controls (type of pulse sequence; repetition time TR; interpulse delay TI; echo delay TE). The pulse sequences "Saturation Recovery"; "Inversion Recovery"; "Spin Echo" are discussed. The authors also analyze the effect of flowing blood on NMR images.

摘要

为了理解脉冲序列如何影响核磁共振（NMR）图像中的黑白显示，组织参数（质子密度；弛豫时间T1和T2）与操作员可选择的控制参数（脉冲序列类型；重复时间TR；脉冲间隔延迟TI；回波延迟TE）相关。文中讨论了“饱和恢复”“反转恢复”“自旋回波”等脉冲序列。作者还分析了流动血液对NMR图像的影响。