Pål Aukrust7
Bente Halvorsen7
7Pål Aukrust
7Bente Halvorsen
Learn More
We have applied the minimum variance (MV) adaptive beamformer to medical ultrasound imaging and shown significant improvement in image quality compared to delay-and-sum (DAS). We demonstrate reduced mainlobe width and suppression of sidelobes on both simulated and experimental RF data of closely spaced wire targets, which gives potential contrast and(More)
— A unified view of the area of sparse signal processing is presented in tutorial form by bringing together various fields in which the property of sparsity has been successfully exploited. For each of these fields, various algorithms and techniques, which have been developed to leverage sparsity, are described succinctly. The common potential benefits of(More)
elements. In these circumstances, the amplitudes of the elements of both sequences are converted to a unit magnitude before the coherence estimate is evaluated. In this section, a condition is given for the distribution of the coherence estimate to be independent of second-channel statistics in this situation. Interestingly, the independence does not rely(More)
Breast imaging systems must recognize very small lesions at early stage of detection in order to save lives and reduce costs. The clinical amplitude–velocity reconstruction imaging (CARI), a recent breast imaging technique, is based on the differentiation of velocity and attenuation of ultrasound wave propagating through the breast tissues. Moreover, the(More)
—The objective of this paper is to analyze the performance of an indoor positioning system based on the ultrasound level, usually called RSSI (received signal strength indicator). This paper builds on past experiences where RSSI values from beams sent in different directions were compared [1]. There relative values of RSSI were measured but herein we go one(More)
Breast cancer is one of the leading causes of death from cancer among women. Both its earlier detection and better treatment have been shown to significantly save lives and reduce high costs. Thus, breast imaging systems must recognize and locate very small lesions. This work is concerned with the finite element time domain (FETD) simulation of ultrasound(More)
  • Cinzia Parolini, Rita Vik, Marco Busnelli, Bodil Bjørndal, Sverre Holm, Trond Brattelid +10 others
  • 2014
Fish consumption is considered health beneficial as it decreases cardiovascular disease (CVD)-risk through effects on plasma lipids and inflammation. We investigated a salmon protein hydrolysate (SPH) that is hypothesized to influence lipid metabolism and to have anti-atherosclerotic and anti-inflammatory properties. 24 female apolipoprotein (apo) E(-/-)(More)
BACKGROUND AND PURPOSE Fatty acid binding protein 4 (FABP4) has been shown to play an important role in macrophage cholesterol trafficking and associated inflammation. To further elucidate the role of FABP4 in atherogenesis in humans, we examined the regulation of FABP4 in carotid atherosclerosis and ischemic stroke. METHODS We examined plasma FABP4(More)