T1加权像（T1-weightedimage）是通过调整脉冲序列的参数，使组织在图像上呈现不同的灰度。在胰腺MRI中，...
High-resolution T1-weighted images were acquired using spoiled gradient recalled sequence on a 3 T MRI system (Tim Trio; Siemens,Erlangen, Germany) with an eight-channel head coil at West China Hospital. The main ...
一、T1、T2是什么意思？MRI是磁共振成像，原理是施加一个磁场，让原子核和着磁场的节拍动起来（共振）...
Sandrone S, Thiebaut de Schotten M, Reimann K, Murphy D, Geyer S, Catani M, Dell'Acqua F (2015) T1-weighted/T2-weighted MRI myelin map- ping does not map myelin in the human corpus callosum. In: Organiza- tion for Human Brain Mapping. Honolulu....
On T1- and T2-weighted magnetic resonance (MR) images obtained at 0.14 T the rat brain was visible in the rat head as an area of relative high signal intensity. The enlarged lateral ventricles produced by intrastriatal injections of the excitotoxin kainic acid (KA) were clearly visible as ...
核磁共振成像MRI造影剂可以分为纵向弛豫造影剂 (T1制剂)和横向弛豫造影剂(T2制剂)。T1制剂是通过水分子中的氢核和顺磁性金属离子直接作用来缩短T1,从而增强信号,图像较亮;T2制剂是通过对外部局部磁性环境的不均匀性进行干扰,使邻近氢质子在弛豫中很快产生相(diphase)来缩短T2,从而减弱信号,图像较暗。
Optimized T1- and T2-weighted volumetric brain imaging as a diagnostic tool in very preterm neonatesOptimized T1- and T2-weighted volumetric brain imaging as a diagnostic tool in very preterm neonatesMRIPreterm brainNeonatesT1- and T2-weighted imagingRelaxation...
5,longT2iswhite,shortT2isblack. 6,waterT1black,T2white. 7,fatT1white,T2gray. 8andT2aresensitivetobleeding,becausethewaterT2is white. T1weightedimagingandT2weightedimaging Theso-calledweightingmeans"outstanding" T1weightedimaging(T1WI)--prominenttissueT1relaxation ...
This article shows a new method of the automatic registration of T1- and T2-weighted MR knee images. This method is based on the entropy and energy measures of fuzziness and can be used in localization process of cruciate ligament. First, two sequences (T1- and T2-weighted) are converted ...
此外,近年来皮质联络纤维被认为是能更灵敏反映AD病理的破坏效应,而基于T1-/T2-weighted ratio mapping是一种新近提出的,能有效研究这一指标的技术,这一方法可基于现有的T1及T2序列,有效反映灰质皮层内髓鞘含量,较弥散张量成像的方法更为简易,有效.研究方法:本研究的数据来自于公共数据库ADNI.根据AD生物学诊断标准,...