Water-fat separation techniques play an important role in a variety of clinical and research applications. In particular, multiecho separation methods remain a topic of great interest due to their ability to resolve water and fat images in the presence of B(0)-field inhomogeneity. However, these methods are inherently slow as they require multiple measurements. An accelerated technique with red...

PURPOSE To demonstrate the feasibility of using chemical shift magnetic resonance (MR) imaging fat-water separation methods for quantitative estimation of transcatheter lipiodol delivery to liver tissues. MATERIALS AND METHODS Studies were performed in accordance with institutional Animal Care and Use Committee guidelines. Proton nuclear MR spectroscopy was first performed to identify lipiodo...

Purpose Designing a new T2-preparation (T2-Prep) module to simultaneously provide robust fat suppression and efficient T2 preparation without requiring an additional fat-suppression for T2-weighted imaging at 3T. Methods The tip-down radiofrequency (RF) pulse of adiabatic T2-Prep was replaced by custom-designed RF-excitation that induces phase difference between water fat, resulting in simultan...

A feasibility study of an electrical impedance mammography (EIM) system with a rotary planar electrode array, named RPEIM, is presented. The RPEIM system is an evolution of the Sussex MK4 system, which is a prototype instrument for breast cancer detection. Comparing it with the other planar electrode EIM systems, the rotation feature enables a dramatic increase in the number of independent meas...

INTRODUCTION A recently developed joint estimation method for water/fat separation, based on a penalized maximum likelihood (PML) formulation and graph cuts optimization, is able to perform robustly in the presence of large B0 field inhomogeneities [1]. This method requires the acquisition of at least three images with different TE shifts, because the water and fat components of the signal are ...

PURPOSE To quantify the concentration of soft-tissue components of water, fat, and calcium through the decomposition of the x-ray spectral signatures in multi-energy CT images. METHODS Decomposition of dual-energy and multi-energy x-ray data into basis materials can be performed in the projection domain, image domain, or during image reconstruction. In this work, the authors present methodolo...

In order to improve the fat suppression performance of in vivo (13)C-MRS operating at 3.0 Tesla, a phantom model study was conducted using a combination of two fat suppression techniques; a set of pulses for frequency (chemical shift) selective suppression (CHESS), and spatial saturation (SAT). By optimizing the slab thickness for SAT and the irradiation bandwidth for CHESS, the signals of the ...

This paper presents numerical modeling and experimental validation of the signal path loss at 5.8 GHz Industrial, Scientific, Medical (ISM) band, performed in context fat-intrabody communication (fat-IBC), a novel intrabody platform using body-omnipresent fat tissue as key wave-guiding medium. Such work extends our previous works 2.0 2.4 characterization its performance other useful frequency r...

background: the purpose of this study is to fabricate inexpensive in-house low cost homogeneous and heterogeneous human equivalent thorax phantom and assess the dose accuracy of the treatment planning systems (tps) calculated values for different lung treatment dosimetery. it is compared with thermoluminescent dosimeter (tld) measurement. materials and methods: homogeneous and heterogeneous tho...