Abstract This in vitro study used the same frequency and duration of acid contact as a previous situ/in vivo to evaluate effect erosion on CAD/CAM restorative materials human enamel compare effects challenges enamel. The (IPS e.max CAD, Lava Ultimate, PMMA block) were eroded by immersion 150 ml cola drink for 14 days (4 × 5 min/day). surface microhardness roughness specimens measured at baselin...

Thrombosis We read with great interest the article by Boukobza et al reporting the usefulness of the T2 gradient-echo (T2*) sequence in making the diagnosis of isolated cortical vein thrombosis. In substance, the authors claim that magnetic susceptibility effect (MSE) is always visible, regardless of the age of the thrombi in the veins. Therefore, after reading this article, one can understand ...

Noninvasive, radiological image-based detection and stratification of Gleason patterns can impact clinical outcomes, treatment selection, and the determination of disease status at diagnosis without subjecting patients to surgical biopsies. We present machine learning-based automatic classification of prostate cancer aggressiveness by combining apparent diffusion coefficient (ADC) and T2-weight...

Comprehensive and quantitative measurements of T1 and T2 relaxation times of water, metabolites, and macromolecules in rat brain under similar experimental conditions at three high magnetic field strengths (4.0 T, 9.4 T, and 11.7 T) are presented. Water relaxation showed a highly significant increase (T1) and decrease (T2) with increasing field strength for all nine analyzed brain structures. S...

PURPOSE Maps related to relative cerebral blood volume (rCBV) were generated with the use of the T1 effects produced by a low-dose bolus passage of gadopentetate dimeglumine. The T1 maps were evaluated in a tumor population and compared with rCBV maps obtained with T2-weighted measurements. METHODS Imaging was performed in 19 patients with suspected intraaxial brain tumors. For the T1 rCBV ma...

OBJECTIVE The main cause of dissatisfaction after sympathetic trunk blocking surgery (T2 sympathectomy, sympathetic clipping) for craniofacial hyperhidrosis is compensatory sweating. Preserving sympathetic trunk may decrease the incidence of compensatory sweating, and we introduce T2 ramicotomy, which may better preserve the sympathetic nerve trunk in order to reduce compensatory sweating. ME...

OBJECTIVE To investigate the correlation of magnetic resonance imaging (MRI) with histopathological changes, and to evaluate T2 mapping in assessing muscle trauma in a rabbit model of muscle injury. METHODS We divided 35 rabbits into seven groups that each represented a different time point after intramuscular hemorrhage and muscle injury. Hemorrhage was created by injecting autologous blood ...

Objective: To explore influences of icariin on Stromal-Derived Factor-1 (SDF-1) and CXC Chemokine Receptor 4 (CXCR-4) of rats with acute ischemic stroke and study on its protection function for nerve. Methods: Healthy SD rats were selected, they were divided into the sham operation group (N group), model control group (M group), high and low icariin dosage group (T1 and T2), rats were given nor...

Background While DE imaging is considered a gold standard in the evaluation of myocardial scar/viability in patients with old MI or cardiomyopathy, a few recent publications demonstrate a higher diagnostic sensitivity of T2weighted techniques in patients with Non-STEMI and myocarditis where changes in T2-weighting are due to inflammation in the myocardium leading to edema (Abdel-Aty H, JACC 53:...