Effective rejection of time-varying clutter originating from slowly moving vessels and surrounding tissues is important for depicting hemodynamics in ultrasound color Doppler imaging (CDI). In this paper, a new adaptive method based on spectral analysis (ACR-SA) presented suppressing nonstationary clutter. ACR-SA, tissue flow characteristics are analyzed by singular value decomposition acceleration backscattered signals to determine an appropriate filter set filters. To evaluate the ACR-SA...

In this paper, we describe a sound reproduction method by using linear front loudspeaker array. Sound images are reproduced two processes separately on the basis of wave field synthesis. First, synthesized as plane waves. Second, lateral or rear rendered focused sources and reflected side walls. To widen listening area, array system with steered directivity is proposed, providing convenience installation display device. Computational simulations conducted to evaluate proposed system.

The SRP (Samsung Reconfigurable Processor) is a high-performance, low-power digital signal processor that supports two different operating modes: the VLIW (very long instruction word) mode for running control-intensive code and CGA (coarse-grained reconfigurable array) computation-intensive code. In SRP, an application starts in mode, then may switch back forth many times between throughout its lifetime. order to support this switching seamlessly, our C compiler capable of generating...

Selective attention can be a useful tactic for speech-in-noise (SiN) interpretation as it strengthens cortical responses to attended sensory inputs while suppressing others. This process is referred attentional modulation. Our earlier study showed that neurofeedback training paradigm was effective improving the modulation of auditory evoked responses. However, unclear how such improved paper attempts unveil what neural mechanisms underlie strengthened selective during paradigm. EEG...

Previous studies have demonstrated that power plane pairs in a printed circuit board are capable of generating significant radiated emissions at resonance frequencies if these resonances not damped by material or component losses. The paper shows may be readily However, from bus still exceed FCC CISPR limits over broad band frequencies.

A data reuse algorithm for multiple reference frame motion estimation is described. The proposed reduces memory access by modifying the search order and centre such that likelihood of increased. Experimental results show 15–30% compared to conventional fast selection algorithm, while maintaining similar bit rate PSNR.

Measurements of viscoelasticity with shear wave velocity dispersion requires measurements over a large bandwidth. In this study, we explored the parameters that modulate frequency characteristics waves induced using radiation force push beams. We used Verasonics ultrasound scanner equipped linear array transducer. performed motion both focused and unfocused were made in elastic phantoms moduli 1, 4, 16 kPa. The number elements for beams varied from 8 to 24, 128. was tracked plane imaging,...

Auditory selective attention is a crucial mechanism for comprehending speech in noise. We investigated if cochlear implant (CI) users exhibit auditory that involves modulation of neural responses to target and such attentional ability predicts their speech-in-noise performance. In our experiment, designed assess the strength modulation, participants with normal hearing CI were given pre-stimulus visual cue directed either two sequences stationary background noise asked select deviant...

A shear wave generation technique which exploits multiple plane waves facing with each other toward their center line is introduced. On this line, ultrasonic interfere constructively resulting two planar that propagate to the opposite directions parallel transducer instead of oblique from point focused pushes due temporal inconsistency pushes. One advantage over an unfocused push beam it generates much larger because actively takes constructive interference between and, moreover, a number...

Atherosclerosis is a leading cause of cardiovascular disease. The early diagnosis atherosclerosis clinical interest since it can prevent any adverse effects atherosclerotic vascular diseases. In this paper, new carotid artery radial strain estimation method based on autocorrelation presented. the proposed method, first estimated by two complex signals from consecutive frames. Then, angular phase converted to and rate they are analyzed over time. addition, 2D image region in be displayed. To...

In ultrasound color Doppler imaging(CDI), effective clutter rejection is essential for estimating flow velocity and power. Since the has time-varying characteristics, it challenging to suppress with a static filter. this paper, new adaptive method based on spectral decomposition tissue acceleration (ACR) suppressing nonstationary presented. proposed method, characteristics are analyzed from singular value of backscattered signals select optimal filter bank filters. To evaluate ACR phantom in...

An ultrasound vector Doppler imaging is useful for detecting flow components normal to the beam direction. However, conventional method suffers from bias of time interval between samples caused by mismatch transmit and receive directions during demodulation. In this paper, a new directional demodulation method, in which performed with modified sample depending on steered angle reduce occurred presented. To evaluate performance proposed pre-beamformed radio-frequency (RF) data in-vitro...

(Abstracted from J Cardiothorac Vasc Anesth, 30(5):1172–1178, 2016) Perioperative excessive blood loss (PEBL) and product transfusion increase morbidity mortality in pediatric congenital heart disease patients undergoing surgery with cardiopulmonary bypass (CPB). It is important to detect CPB-related coagulopathy earlier be able initiate preventive or treatment strategies minimize perioperative requirements cardiac surgery.

Auditory selective attention is a crucial top-down cognitive mechanism for understanding speech in noise. Cochlear implant (CI) users display great variability speech-in-noise performance that not easily explained by peripheral auditory profile or demographic factors. Thus, it imperative to understand if processes such as explain variability. The presented study directly addressed this question quantifying attentional modulation of cortical responses during an task and comparing its...

In this paper, a new novel sound field processing system is proposed. This assists listeners in perceiving audible characteristics of given movie theater or hall, especially with regard to distance and spatial impression. To extend space artificially, conventional algorithms reproduce reflected sounds based on the panning law. However, even if law could perceived listening space, it accompanies coloration, which reduces quality. Here, grouped reflections algorithm (GRA) for proposed fields...

This paper proposes a constrained two-layer compression technique for electrocardiogram (ECG) waves, of which encoded parameters can be directly used the diagnosis arrhythmia. In first layer, single ECG beat is represented by one registered templates in codebook. Since required coding parameter this layer only codebook index selected template, its ratio (CR) very high. Note that distribution also related to characteristics thus it as metric detect various types arrhythmias. The residual...

Background: We identified the incidence and risk factors for acute kidney injury (AKI) after living donor liver transplantation constructed a simplified scoring model to determine clinical score prediction of AKI. Methods: retrospectively reviewed 525 cases thoracic aortic surgery. Multivariate logistic regression analysis was used evaluate predicting AKI defined by RIFLE criteria. A developed in derivation cohort (n = 300), validated on remaining patients. The with based β-coefficient,...

We designed a spatial selective attention task to investigate listener’s speech understanding ability in various masking noise conditions. The stream is music and non-intelligent combined sound which was played from the front-right back directions. target has an auditory cue “Ready,” following color number information, for example, ‘Ready Blue Five,’ front-left direction. A attentional evaluated through accuracy of correct selection each condition SNRs location masker. formed two subject...

This study investigates listeners' biological responses to speech under different masking noise conditions during a spatial selective attention task. Ten participants with normal hearing took part in the experiment which measured both behavioral and identification task varying streams. The target stream was played through front-left speaker, while noise, consisting of music non-intelligent speech, presented either front-right or back-center speaker. Behavioral performance assessed based on...

In this study, we propose a novel technique for estimating energy in PET detectors composed of multiple scintillators. We mixed waveforms from two detectors, each containing BGO, GAGG, or LGSO scintillators, and trained model using artificial neural networks to distinguish the waveform. compared accuracy amplitude integration values as labels estimation, R <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> metric. When applying...