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...
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 ...
Dynamic susceptibility contrast (DSC) MRI plays a pivotal role in the accurate diagnosis and prognosis of several neurovascular diseases, but is limited by its reliance on gadolinium, an intravascularly injected chelated metal. Here, we determined the feasibility of measuring perfusion using a DSC ana...
functional MRI, PET, EEG and magnetoencephalography) is widely considered to have potential for diagnosis, prognostication, and prediction of treatment outcome in patients with chronic pain. In this Consensus Statement
如前所述,造影增强 MRI(Contrast-enhanced MRI, CE-MRI) 可用于患者的疗效评估和肿瘤病变的检测标准,但它无法区分疑似病灶是进展恶化中的肿瘤还是治疗所致的非肿瘤损伤病变(如上述的治疗后辐射效应)。尽管这两种不同类型的病变在影像学方面均表现为对比增强的肿块,但二者预后截然不同。所幸的是,不同于CE-MRI,...
Thirty one consecutive patients strongly suspected of severe Middle Cerebral Artery AIS presenting less than 6 h after onset of symptoms or with unknown time of onset of symptoms underwent a standardized CT protocol in spectral mode including Non Contrast CT, mCTA, and Perfusion CT (CTP) on a ...
对比增强磁化传递MRI在肺癌脑内小转移灶成像中的价值 Contrast enhanced magnetisation transfer MRI in small lung metastatic lesions of the brain.Chin J Radiol, 2004, 38(12): 1252-1255.苗英,林伟,钱玉娥... 苗英,林伟,钱玉娥,... - 《中华放射学杂志》 被引量: 24发表: 2004年 Structural and func...
, director of MRI services and professor of radiology and neuroradiology at the University of Pittsburgh Medical Center, explains what is known about MRI contrast retention in the brain and other MRI safety concerns. He spoke to ITN at RSNA 2016. Gadolinium-based contrast agents have been used...
A,Cleft to right: diffuse brain gliomas, hyperintense on long TR (T2/FLAIR) sequences, without contrast enhancement (T1-weighted post-Gadolinium MRI);BMRSI shows slight elevation in Cho/Cr ratio and reduced NAA in grade 2 Astrocytoma;Dpronounced Cho/Cr increase and NAA decrease in grade 3 ...
Alternatively, neuroimaging technologies [35,36] such as structural magnetic resonance imaging (sMRI), functional MRI (fMRI), diffusion tensor imaging (DTI), and positron emission tomography (PET), enable noninvasive detection of brain degeneration from the perspective of brain structure and function....