Comparison of CT and MRI, with and without Contrast Enhancement, in the Detection of Brain TumorsMagnetic 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 ...
Deep Learning Enables Reduced Gadolinium Dose for Contrast-Enhanced Brain MRI (Journal of Magnetic Resonance Imaging 2018) 这是一篇医学图像增强的论文,介绍了研究人员正在使用人工智能来减少MRI检查后留在体内的造影剂的剂量。 提出背景 钆(gá,gadolinium)是一种用于对比材料的重金属,可增强MRI上的图像,作为一...
Simulations showed that the RTS lead is transparent to the incident RF field and generated similar temperature increase (up to 0.9°C) compared with the ASTM phantom without lead. By contrast, the PtIr wire generated a temperature increase up to 12°C near the electrode (please note that the...
MRI volumes of the hippocampus and amygdala in adults with Down's syndrome with and without dementia. Am J Psychiatry 1999; 156: 564–568. CAS PubMed Google Scholar Granholm AC, Sanders LA, Crnic LS . Loss of cholinergic phenotype in basal forebrain coincides with cognitive decline in a ...
Objective To study the brain small metastatic focus from primary lesion of the lung by means of MR imaging with contrast enhanced magnetization transfer (MT) Methods SE T 1WI was obtained before and after the administration of Gd DTPA (0 1 mmol/kg) with and without MT in 172 lesions of ...
In addition, magnetic resonance angiography, a unique form of MRI technology, can be used to produce an image of flowing blood. This permits the visualization of arteries and veins without the need for needles, catheters, or contrast agents. As with MRI, these techniques have helped ...
(MRI)of your brain. They will most likely use an MRI, which is the best imaging test to identify a brain tumor, but they may use a CT scan if you can't have an MRI for some reason. You will likely need to be injected with a contrast agent before your test. This makes the ...
How reliable is a CT-brain scan with contrast in showing MS lesions as enhancing lesions in the presence of a contraindication to use MRI? Magnetic Resonance Imaging: Magnetic resonance imaging is a non-encroaching imaging procedure t...
Graif M, Steiner RE (1986) Contrast enhanced magnetic resonance imaging of tumours of the central nervous system: A clinical review. Br J Radiol 59:865–873 PubMed CAS Google Scholar Greitz T (1975) Computer tomography for diagnosis of intracranial tumours compared with other neuroradiologic pr...
For the first time, we performed a DSC-MRI perfusion analysis using a breath-hold task, without exogenous contrast or additional medical device equipment. We have found the following: The AIF during a breath-hold task is uniquely characterized by a negative signal change, likely representing vasod...