PURPOSE: Diffusion weighted imaging is a potential method for the detection and characterization of breast cancer [1]. By measuring apparent diffusion coefficient (ADC) values, it is possible to probe the local cellular microstructure in breast tissue. This may be used to distinguish between malignant and benign lesions and to recognize early response in cancer therapy monitoring. High field MR...

Introduction: Functional connectivity, implied by inter-region correlation, has previously been reported in spontaneous resting state BOLD activity. Previous work has shown high correlation between BOLD fMRI signals from functionally related disparate brain regions e.g. 1 implying that brain activity in these regions is connected even in the absence of external stimuli. It is well known that as...

BACKGROUND Magnetic resonance imaging is an essential tool in the pre-surgical evaluation of patients with drug-resistant epilepsy. OBJECTIVE Our aim was to assess the value of re-imaging patients with focal drug-resistant epilepsy. METHODS Thirty patients with negative or non-conclusive 1.5 Tesla magnetic resonance imaging were rescanned with 1.5T and 3T. All of them had previous 1.5 scans...

INTRODUCTION: While most clinical studies using magnetization transfer (MT) imaging have been performed at 1.5T, high resolution-MT imaging (hr-MT) is feasible at 3T. Higher field enables efficient acquisition with improved conspicuity of brain structures (1). Hr-MT has considerable potential for investigating neurological disorders affecting small brain structures such as early stage Alzheimer...

PURPOSE Phosphorus magnetic resonance spectroscopy ((31)P-MRS) affords unique insight into cardiac energetics but has a low intrinsic signal-to-noise ratio (SNR) in humans. Theory predicts an increased (31)P-MRS SNR at 7T, offering exciting possibilities to better investigate cardiac metabolism. We therefore compare the performance of human cardiac (31)P-MRS at 7T to 3T, and measure T1s for (31...

The Bacillus subtilis 166 chromosome was found to share extensive homology with the genome of bacteriophage +3T. At least three different regions of the bacterial genome hvdridized to ribonucleic acid complementary to +3T deoxyribonucleic acid (DN.1). The thymidylate synthetase gene, thyA, of B. subtilis and the sequences adjacent to it were shown to be homologous to the region in the +3T DSA c...

BACKGROUND AND PURPOSE For the localization of spinal dural arteriovenous fistulas, it is not determined whether dynamic contrast-enhanced MRA is more reliable than multidetector CTA. The aim of this study was to compare the agreement between intra-arterial DSA, dynamic contrast-enhanced MRA at 3T, and 64-row multidetector CTA for the localization of spinal dural arteriovenous fistulas. MATER...

Tandem solar cells are the best approach to maximize the light harvesting and adjust the overall absorption of the cell to the solar irradiance spectrum. Usually, the front and back subcells are connected in series in two-terminal device (2T) designs which require a current matching between both subcells in order to avoid potential losses. Alternatively, they can also be connected in parallel g...

INTRODUCTION There is emerging evidence that brain atrophy is a part of the pathophysiology of Multiple Sclerosis (MS) and correlates with several clinical outcomes of the disease, both physical and cognitive. Consequently, brain atrophy is becoming an important parameter in patients' follow-up. Since in clinical practice both 1.5Tesla (T) and 3T magnetic resonance imaging (MRI) systems are use...

Introduction: 3T MRI systems provide an inherent increase in SNR that can be used for gains in spatial and/or temporal resolution. However, a limitation of imaging at 3T is an increase in specific absorption rate (SAR), particularly in sequences with large flip angles and many refocusing pulses, as occurs with many 180o refocusing pulses of a turbo spin echo sequence. A recently developed seque...