EXAM:MRI BRAIN without and with contrast 40/5000 源语言: 英语 目标语言: 简体中文 结果(简体中文) 1: [复制] 考试:没有和有对比的MRI脑 结果(简体中文) 2:[复制] 考试:无和对比的MRI大脑 结果(简体中文) 3:[复制] 无脑磁共振造影其它语言...
By increasing the contrast of an image, it will be easy for analysing because of detailed information. This increase in contrast can be done by number of ways in image processing. This paper compares different methods of enhancement of brain MRI using histogram based techniques. 展开 ...
Magnetic resonance imaging (MRI) as a clinical investigation became available in the early 1980s. Since then this method has proven to be a valuable additional diagnostic tool in the recognition and delineation of space-occupying lesions of the brain (1, 2, 3, 5). In the present study the...
INTRODUCTION: The aim of this study is to investigate perfusion characteristics of brain arteriovenous malformation (AVM) by means of MRI perfusion-weighted imaging (PWI). METHODS: Forty-three patients with brain AVM were prospectively included and investigated by PWI-MRI. Diagnosis of type of diseas...
Our purpose was to compare prospectively the sensitivity of contrast-enhanced magnetisation transfer (MT) MRI and gradient-echo (GE) T1-weighted images in metastatic disease of the brain. We studied 52 patients with brain metastases, using conventional T1-weighted GE and MT spin-echo (SE) images...
Multimodal machine learning studies show promise in brain aging23; however, most rely on structural magnetic resonance imaging (MRI), overlooking brain network dynamics. Complex spatiotemporal dimensions can be tracked with spatial accuracy through functional magnetic resonance imaging (fMRI) and with mill...
Target definition and trajectory optimization for interactive MR-guided biopsies of brain tumors in an open configuration MRI system. We present an imaging strategy for planning and guiding brain biopsies in an open configuration MR system. Preprocedure imaging was performed in a 1.5-T MR... SS ...
The cortical surface was extracted from the anatomical MRI of a single 2-year-old, using Freesurfer (http://surfer.nmr.mgh.harvard.edu/). We simulated the fields from an array of dipoles (26,988 in total) that were distributed over the cortical surface with locally normal orientations. For...
Diffusion spectrum images (DSI) were acquired on a 3-Tesla MRI scanner (Trio, Siemens Medical, Germany) using a 32-channel head-coil. The protocol was comprised of (1) a magnetization-prepared rapid acquisition gradient echo (MPRAGE) sequence sensitive to white/gray matter contrast (1-mm in...
(e.g. subthalamic nucleus) that are nearly invisible in T1w MRI. We therefore employed a two-stage multi-contrast registration procedure with the PD25 space as the medium, as shown in Fig.1. The proposed method takes advantage of the similar contrast between BigBrain and PD25 T1-T2* ...