The signal intensity in MRI depends on the proton density, T1, T2 and T2 relaxation processes of any ensemble of the spins within each imaging elements (voxel). Another important contrast mechanism in MRI is signal loss caused by proton dephasing in the presence of coherent and incoherent flow...
using fast T1-weighted (T1w) imaging sequences, has enabled the quantification of several pharmacokinetic parameters, including endothelial permeability and microvascular volume. Finally, blood flow measurements with phase-contrast MRI can be used to quantify pulse wave velocity (PWV), which is a comm...
The biological phenomenon known as ligamentization and the maturation process that the ACL graft undergoes is complex, intricate, and still a matter of debate. The healing process of the grafted ACL and its ultimate role in restoring normal function of the knee is still not completely understood;...
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对于接受3节段ACDF的运动员来说,回归赛场的共识很低。对于无脊髓损伤影像学证据(T2信号强度增加)和椎管直径大于10mm的无症状运动员,对于恢复比赛有强烈的共识。对于ACDF术后假关节的患者,没有一致的意见。对于有颈椎损伤史的运动员,在参加运动前进行MRI扫描的共识强度很强。
Multiparametric MRI of the prostate (mpMRI) with its excellent depiction of the anatomy of the prostate and the pelvis has become the preoperative imaging modality of choice [2] for detection of PCa foci. Its ability to detect and localize suspicious prostate cancer foci is warranted to perform...
aMetastases appear as soft tissue lesions with variable enhancement pattern. The most useful MRI sequences are fat-suppressed T2W and delayed postgadolinium T1W images. 转移出现,软的组织损害与易变的改进样式。 最有用的MRI序列是肥胖被压制的T2W和被延迟的postgadolinium T1W图象。[translate] ...
A brain MRI, requested to characterize the suspected lesion con firmed the presence of a right temporal rounded cystic lesion (42x33x31 mm) which appeared hypointense in T1 and hyperintense in T2, with an inferior and lateral solid part (20 mm of maximum diameter) (Figure 2C– F(i)...
How is an SCI diagnosed?Your healthcare provider will do tests to see if you have any movement or feeling in your arms and legs. You may also need tests such as MRI, CT, or x-ray, to show any damage to your spinal cord. You may be given contrast material to help show the damage...
Today, this has been solved with the rapid delivery of high-quality image data to neuroradiologists wherever they may be, thanks to the use of high-speed internet access and excellent web-based PACS browsers. Another technique, which is frequently used, is mag- netic resonance imaging (MRI)...