Magnetic resonance imaging (MRI) at a field strength of 3 Tesla has become more and more frequently used in recent years. In an increasing number of radiological sites, 3-Tesla MRI now starts to play the same role for clinical imaging that was occupied by 1.5-Tesla systems in the past. Because of physical limitations related to the higher field strength and because of protocols transferred from...

The authentication of VANET messages continues to be an important research challenge. Although much research has been conducted in the area of message authentication in wireless networks, VANETs pose unique challenges, such as real-time constraints, processing limitations, memory constraints, requirements for interoperability with existing standards, extensibility and flexibility for future req...

background: recently different studies suggested that discontinuation of gonadotrophin releasing hormone analogue (gnrha) at beginning of ovarian stimulation (improvement of ovarian response to gonadotrophins) may have some benefit to poor responder patients in invitro fertilization (ivf) cycles. objective:the efficacy of gnrha stop protocol in poor responder patients in ivf cycles was assessed...

objective: this study was conducted to compare the results of fixed versus flexible gnrh antagonist protocols in controlled ovarian stimulation for intra cytoplasmic sperm injection (icsi) in patients with pcos. materials and methods: a randomized clinical trial was performed on 100 pcos women, who were admitted to a tertiary infertility clinic and were candidate for ivf/icsi. they were divided...

Longitudinal (T1) and apparent transverse relaxation times (T2) of choline-containing compounds (Cho), creatine/phosphocreatine (Cr/PCr), and N-acetyl aspartate (NAA) were measured in vivo in human brain at 4 Tesla. Measurements were performed using a water suppressed stimulated echo pulse sequence with complete outside volume presaturation to improve volume localization at short echo times. T1...

This paper presents TESLA, an agent-based application for optimizing the energy use in commercial buildings. TESLA’s key insight is that adding flexibility to event/meeting schedules can lead to significant energy savings. TESLA provides two key contributions: (i) three online scheduling algorithms that consider flexibility of people’s preferences for energy-efficient scheduling of incrementall...

We present several latency optimizations on two classes of broadcast authentication schemes for networks where the topology and the identities of the receiving nodes are known a-priori. Let n be the number of receivers in the network. The first class of protocols involves the construction and dissemination of a hash tree with message authentication codes (MACs) at the leaves. We show that this ...

BACKGROUND To evaluate the inter-study, inter-reader and intra-reader reproducibility of cardiac cine and scar imaging in rats using a clinical 3.0 Tesla magnetic resonance (MR) system. METHODS Thirty-three adult rats (Sprague-Dawley) were imaged 24 hours after surgical occlusion of the left anterior descending coronary artery using a 3.0 Tesla clinical MR scanner (Philips Healthcare, Best, T...