Contrast Agents - A contrast agent or contrast medium is a substance introduced to the region being imaged... between normal and abnormal tissue... MRI or MR contrast agents are classified by the different changes in relaxation times
The clinical use of MRI in patients with multiple sclerosis (MS) has advanced markedly over the past few years. Technical improvements and continuously emerging data from clinical trials and observational studies have contributed to the enhanced performance of this tool for achieving a prompt diagnosis...
3D PCASL is a novel MR perfusion imaging without contrast injection that has good reliability for CBF measurement of cortex and subcortical gray matter24,25,26. In our previous studies, this technique was used to investigate the perfusion state of EM (hyperperfusion in the left Brodmann 38)27 ...
Visualization of anterior disc displacement in temporomandibular disorders on contrast-enhanced magnetic resonance imaging: comparison with T2-weighted, proton density-weighted, and precontrast T1-weighted imaging[J]. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2007,103(2):260-266. doi: ...
METHODS: Seventy-four patients suffering from migraine without aura were recruited to participate in this cross-sectional dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) study. The patients were instructed to report at the hospital for DCE-MRI scan during and outside of a spontaneous ...
contrast and detection of both the venous vasculature and hemorrhage within tumors, which cannot be seen with conventional imaging methods SWI能提高对比,更好显示肿瘤的静脉和出血,这是常规影像学检查所不能显示的 Pre- and Postcontrast SWI 平扫与增强SWI Hemorrhages can be easily distinguished from veins...
In follow-up studies, the main purpose of brain MRI is to detect active lesions (that is, new or enlarging T2 lesions with or without contrast uptake). Thus, a simplified protocol involving proton-density and/or T2-FLAIR and T2-weighted fast spin-echo sequences can be used, which should...
with an asymmetric acquisition matrix or slice thickness, and may be larger than the pixel or voxel. • View the DATABASE results for 'Resolution Element' (2). Further Reading: News & More: Micro-MRI Principles, Strengths, and WeaknessesTuesday, 10 January 2017 by www.news-medical.net ...
Visualization of anterior disc displacement in temporomandibular disorders on contrast-enhanced magnetic resonance imaging: comparison with T2-weighted, proton density-weighted, and precontrast T1-weighted imaging[J]. Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 2007,103(2):260-266. doi: ...
migraine with aura7. In a separate study, the induction of microvascular lesions in an Alzheimer’s mouse model was shown to alter both the deposition and clearance of amyloid-beta plaques. Optical microscopy and photoacoustic imaging are potential techniques for imaging the local architecture of ...