EFFECT OF INTERSECTION SPACING ON MR IMAGE-CONTRAST AND STUDY TIME
EFFECT OF INTERSECTION SPACING ON MR IMAGE-CONTRAST AND STUDY TIME
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DOI：
10.1148/radiology.158.3.3945757
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发表时间：
1986-03-01
期刊：
影响因子：
19.7
通讯作者：
WEHRLI, FW
中科院分区：
文献类型：
--
作者：
KNEELAND, JB;SHIMAKAWA, A;WEHRLI, FW
在健康志愿者和使用早期商业版本磁共振成像系统的体模中研究了节段分离对图像对比度和计算的T1弛豫时间的影响。定性解释的影响的基础上发生的旁瓣的激励以外的选定的部分，从而减少T1松弛允许的时间。处理不完善的部分选择的选项，包括部分的分离（即， 留下间隙）和非顺序激励，并解释了在每种情况下所涉及的折衷。
The effects of section separation on image contrast and calculated T1 relaxation times were investigated in healthy volunteers and a phantom using an early commercial version magnetic resonance imaging system. The effects are explained qualitatively on the basis of side lobes of excitation occurring outside the selected section resulting in reduction of the time permitted for T1 relaxation. The options for dealing with imperfect section selection, including separation of the sections (i.e., leaving gaps) and nonsequential excitation, are illustrated and the trade-offs involved in each explained.