The mechanical properties of liver can sensitively indicate the progression of hepatic fibrosis. Mechanical tissue characterization involves the analysis of the complex shear modulus measured either by oscillatory rheometry or by in vivo elastography. In this study, bovine liver specimens were investigated by oscillatory rheometry and multifrequency magnetic resonance elastography (MRE) in a co...

In this study, a magnetorheological elastomer (MRE) was manufactured and tested, and a MRE sandwich beam was also fabricated from a MRE between two thin aluminum layers. An experimental test rig was set up to investigate the vibration response of the MRE sandwich beam under a non-homogeneous magnetic field. The experimental results show that the first natural frequency of the MRE sandwich beam ...

PURPOSE Continuous monitoring of liver fibrosis progression in patients is not feasible with the current diagnostic golden standard (needle biopsy). Recently, magnetic resonance elastography (MRE) has emerged as a promising method for such continuous monitoring. Since there are different MRE methods that could be used in a clinical setting there is a need to investigate whether measurements pro...

OBJECTIVE To determine the possibility of immediate estimation of plasma estradiol (E2) levels in stimulated ovarian cycles using a multiple regression equation (MRE) based on the analysis of the number and size of ovarian follicles measured by pelvic ultrasound. METHOD E2 levels were measured by enzyme immunoassay (EIA) in 47 patients on the day of induction of ovulation with human chorionic...

AIMS To survey the perceived indications for magnetic resonance imaging of the small bowel (MRE) by experts, when MR enteroclysis (MREc) or MR enterography (MREg) may be chosen, and to determine how the approach to MRE is modified when general anaesthesia (GA) is required. MATERIALS AND METHODS Selected opinion leaders in MRE completed a questionnaire that included clinical indications (MREg ...

The main goal of this study was to characterize the in vitro antioxidant activity and the apoptotic potential of S. birrea methanolic root extract (MRE). Among four tested extracts, obtained with different solvents, MRE showed the highest content of polyphenols, flavonoids, and tannins together with antioxidant activities tested with superoxide, nitric oxide, ABTS, and beta-carotene bleaching a...

This paper provides a study of the theoretical properties of Most Relevant Explanation (MRE) [12]. The study shows that MRE defines an implicit soft relevance measure that enables automatic pruning of less relevant or irrelevant variables when generating explanations. The measure also allows MRE to capture the intuitive phenomenon of explaining away encoded in Bayesian networks. Furthermore, we...

Introduction: Magnetic Resonance Elastography (MRE), a noninvasive technique for quantitatively assessing the mechanical properties of soft tissues (1), is very promising for diagnosing hepatic fibrosis by detecting elevated hepatic shear stiffness (2-4). Typically MRE is performed on 1.5T MR systems as these are commonly available in the clinical practice. MR imaging at higher field strengths,...

S everal recent studies have identified an accelerating rate of radiation exposure in patients with poorly controlled complicated small bowel Crohn’s disease (CD), largely due to abdominal and pelvic computed tomography (CT) scans performed in local emergency departments with potentially long-term clinical consequences. This has motivated active research into alternatives for disease activity a...

Methods: Liver MRI and MRE were performed in 32 subjects. The indications for liver MRE were suspected fibrosis/cirrhosis (n=24) and liver tumour (n=8). All MRI studies were performed on a single 1.5 Tesla clinical MR scanner (GE, Milwaukee, USA). The MRE was performed before (pre-Gd MRE) and at the end of standard Liver MRI protocol immediately after the 5 minute delayed phase (post-Gd MRE) in...