MPRAGE, or Magnetization Prepared Rapid Gradient Echo Imaging, is a prominent 3D gradient echo (GRE) MRI technique, especially in neuroimaging. It intricately melds an inversion recovery (IR) sequence with a rapid gradient echo acquisition, creating detailed volumetric images.

The original MP-RAGE (Magnetization Prepared - RApid Gradient Echo) was introduced in a prior Q&A dealing with inversion preparation methods. Since its development nearly 30 years ago, MP-RAGE has become the dominant sequence for 3D-T1 …

磁化准备超快速梯度回波序列应用而生，该序列主要是利用梯度回波序列到达稳态之后，采用一组非常短的TR连续采集达到稳态的多个信号，而在此之前施加一个 磁化准备脉冲，图像的对比度主要取决于磁化准备脉冲。 所以该序列的结构可以分为两部分：磁化准备部分（产生所需要的对比度）和图像采集部分（快速读出信号）。 一.序列结构. 上图是该序列的基本结构，其序列的对比度主要由磁化准备脉冲部分决定，该脉冲可以是多个射频脉冲的组合，可以提供T1、T2及其他各 …

1992年3月1日 · The three-dimensional, Fourier-transformed acquisitions require magnetization-prepared 180 degrees radio-frequency pulses and rapid gradient-echo (MP RAGE) sampling. The resulting T1-weighted images were compared with T1-weighted spin-echo (SE) images; both were obtained after paramagnetic contrast material was administered to 33 patients with ...

The three-dimension (3D) magnetization-prepared rapid gradient-echo (MP-RAGE) sequence is one of the most popular sequences for structural brain imaging in clinical and research settings. The sequence captures high tissue contrast and provides high ...

MPRAGE这个序列大家熟悉，MP2RAGE可能就相对陌生了。 磁共振扫描参数决定不同的磁共振序列，而不同的磁共振序列体现不同的图像对比度。 学好磁共振可以从各种眼花缭乱的序列里开始，其实序列千变万化，都是扫描参数的变化，而且大部分序列也可以相应的进行归类。 磁共振序列的故事相关文章： 磁共振序列的故事（一） 磁共振序列的故事（二） 磁共振序列的故事（三） 磁共振序列的故事（四） 磁共振序列的故事（五） 磁共振序列的故事（六）多回波序列的应 …

2024年2月26日 · MPRAGE is designed for rapid acquisition with T1 weighted dominance. Fast gradient echoes are characterized by their rapid sampling time, high signal intensity and image contrast while approaching steady state (the echo is collected during the time when tissues are experiencing T1 relaxation).

MP-RAGE stands for Magnetisation Prepared RApid Gradient Echo. MP-RAGE is a 3DFT contrast prepared gradient echo sequence. The T1 weighted MP-RAGE uses a 1800 inversion pulse followed by a time delay (TI) to establish T1 contrast in the same manner as an Inversion Recovery (IR) sequence.

T1加权三维磁化强度预备梯度回波序列（T1WI-3D-MP RAGE）是应用180°预备反转脉冲和小角度激发梯度回波快速获得三维傅立叶数据采集的磁共振扫描序列，其具有较高的空间分辨率和时间分辨率[3-4]，能显示人脑内部细微解剖结构，并可以三维重建，在颅内转移瘤的早期检出以及治疗的评估中均有很大帮助。 本文探讨三维MR序列在颅内转移瘤评估中的应用。 1.1 一般资料 回顾性分析2017年6月至2017年11月经临床病理或随访证实的肿瘤颅内转移患者35例，其中男14例， …

1991年1月1日 · With the 2-dimensional (2D) Magnetization Prepared RApid Gradient Echo (MP-RAGE) sequences, MR images with high tissue contrast can be obtained in extremely short imaging times and virtually without motion artifacts. The technique is therefore particularly useful for imaging the abdomen.