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，...
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）...
至于所谓的T1看解剖 T2看病变，在绝大多数情况都是分别指T1-weighted images or T2-weighted images。...
Kapanen M, Tenhunen M (2013) T1/T2*-weighted MRI provides clinically relevant pseudo-CT density data for the pelvic bones in MRI-only based radiotherapy treatment planning. Acta Oncol 52:612–618M. Kapanen and M. Tenhunen, "T1/T2*-weighted MRI provides clinically relevant pseudo- CT ...
最近的一项研究结合离体 MRI 和组织学分析,证明了颞极模糊 TLE 患者有髓轴突的非典型形态。迄今为止,对人脑髓鞘变化的非侵入性研究仍然是一个挑战。最近,一种基于 T1 加权(T1w)和 T2 加权(T2w)磁共振图像比率的方法为体内大脑...
MRI 呈像技术中有许多脉冲序列:自旋回波序列(SE 序列)、梯度回波序列(GRE 序列)、反转回复序列(IR 序列)等等。每种序列又用于不同类型的呈像技术,其中 SE 序列是最为常用的获得 T1、T2 图像的成像序列。 那么我们不太熟悉的另外几种是怎么回事?...
T2weightedimaging(T2WI)--prominenttissueT2relaxation (transverserelaxation)difference. Onanysequenceimage,thelargerthemagnetizationvectoris atthetimeofthesignalacquisition,thestrongertheMR signal. T1weightedimageslikeshortTR,shortTE-T1weightedimages, T1imagefeatures:theshorterthetissueT1,thefasterthe ...
Development of a multifunctional nanoparticle (NP) system allowing for dual-contrast T1- and T2-weighted targeted magnetic resonance (MR) imaging of tumors could significantly improve the diagnosis accuracy. In this study, superparamagnetic silica-coated iron oxide core-shell nanoparticles (Fe3O4@SiO2...
To assess contrast-enhanced (C+), fat-saturated (FatSat), T1-weighted (T1W) imaging in the characterization of the soft tissue mass associated with primary bone tumors, we compared it with T2-weighted (T2W) imaging in patients with osteosarcoma ( n = 36) and Ewing sarcoma family of tumo...
采集了 70例AD患者,112例MCI患者(包含在随访中转化为AD的,MCI-C:MCI Converters与未转化为AD的,MCI-NC:MCI Non-converters 各 56 例),以及 70 例正常人(NC)的 T1-Weighted MRI 三维(3D)脑图像.首先提取每个脑图像的灰质来构造每个脑图像的三阶灰质张量,张量大小为95×119×102.采用张量主成分分析法(TPCA...