Such instruments exist but are mostly made in-house. As lightweight magnets must be used, the magnetic field strengths of portable devices are generally lower than 1 T, commonly referred to as low-field devices. The spatial resolution of such devices can range from ~ 100 μm [10, 12...
Most commonly, only the field strength is mentioned when the differences between imaging systems is discussed. However, the utilized RF and gradient coils are equally important and can literally determine the success of an experimental MRI research program. Custom-made coils specific to the studied ...
We confirmed in this study that HGG patients with high RIB score had abundant immune cell infiltrating and stronger immune response as immunologically “hot” tumors. Therefore, we assessed the predictive value of the RIB score within an immunotherapy-treated cohort. Firstly, the patients were ...
Knowledge of thrombus behavior and visualization on MRI in acute ischemic stroke is less than optimal. However, MRI sequences could be enhanced based on the typical T1 and T2 relaxation times of the target tissues, which mainly determine their signal int
2b). More generally, increasing the aspect factor from 1 to 6 enabled the attenuation coefficient to become 62% larger (Eq. (17)). Both single voxel and SRR simulations agreed with measurements. Note that TR was here constant across measurements to avoid contributions from T1-weighting. ...
Since Gd3+ has a similar ionic size to divalent endogenous cations, particularly Ca2+, it competes with Ca2+ and disrupts the normal function of Ca2+-related signaling pathways, which can lead to toxicity in neural systems36,37. Ca2+ signaling plays an essential role in neural systems. For ...
However, another study shows the parametric model is generally better than the semi-parametric model for the survival study in cancer study [11]. Use of Weibull functions with overall survival significantly increases the precision of small arms typical of early phase trials. The study reported that...
ICD’s are designed to deliver high-energy shocks. Some ICDs do not have shock leads in the heart. “Leadless” pacemakers are generally placed in the Left atrium Left ventricle Right atrium Right ventricle Which of the following pacemaker scenarios would invoke the greatest MR safety con...
Generally, PI methods allow for accelerated acquisitions by a factor of 2–3× without sacrificing image quality. PI is therefore widely used in clinical applications within these acceleration limits. CS allows for a stronger sub-Nyquist sampling if (1) the images are compressible, i.e. can ...
Generally, ferroptosis-induced cell death has been proved to be effective in killing cancer cells through ROS accumulation in cells15,16. Moreover, recent studies prove that the oxidative stress-inducing ferroptosis also upregulates the translocation of calreticulin (CRT) expression on the surface of...