Conventionally, the inverse problem of gated cardiac SPECT is solved by reconstructing the images frame-by-frame, ignoring the inter-frame correlation along the time dimension. To compensate for the non-uniform attenuation for quantitative cardiac imaging, iterative image reconstruction has been a choice which could utilize an a priori constraint on the inter-frame correlation for a penalized m...

POSITRON Emission Tomography (PET) is widely used today for diagnosis and therapy follow up assessment in oncology. Novel applications like image guided radiotherapy are flourishing. However, PET images are of poor quality due to noise and blur. Respiratory motion is a major source of reduced quality, particularly when considering thoracic imaging. In order to minimize its effects, it has been ...

In this paper we introduce a new speech recognition system, leveraging a simple letter-based ConvNet acoustic model. The acoustic model requires only audio transcription for training – no alignment annotations, nor any forced alignment step is needed. At inference, our decoder takes only a word list and a language model, and is fed with letter scores from the acoustic model – no phonetic word l...

We evaluated exposed-radiation doses on dual-source cardiac computed tomography (CT) examinations with prospective electrocardiogram (ECG)-gated fast dual spiral scans. After placing dosimeters at locations corresponding to each of the thoracic organs, prospective ECG-gated fast dual spirals and retrospective ECG-gated dual spiral scans were performed to measure the absorbed dose of each organ....

We report the effect of remote surface optical (RSO) phonon scattering on carrier mobility in monolayer graphene gated by ferroelectric oxide. fabricate transistors back-gated epitaxial (001) Ba 0.6 Sr 0.4 TiO 3 films, with field up to 23 000 cm 2 V −1 s achieved. Switching polarization induces nonvolatile modulation resistance and quantum Hall at low temperatures. Ellipsometry spectroscopy stu...

Electrolyte-gated transistors have been proposed as promising candidates for neuromorphic applications. Synaptic plasticity behaviors and most recently synaptic metaplasticity or of mimicked on electrolyte-gated transistors. In this work, indium-gallium-zinc-oxide thin-film gated with sputtered SiO2 electrolytes are fabricated. Both spiking-width-dependent spiking-height-dependent successfully ...

AIM Respiratory motion affects cardiac PET-computed tomography (CT) imaging by reducing attenuation correction (AC) accuracy and by introducing blur. The aim of this study was to compare three approaches for reducing motion-induced AC errors and evaluate the inclusion of respiratory motion correction. MATERIALS AND METHODS AC with a helical CT was compared with averaged cine and gated cine CT...

Intensity difference limens (DLs) were measured in users of the Nucleus 22 and Clarion v1.2 cochlear implants and in normal-hearing listeners to better understand mechanisms of intensity discrimination in electric and acoustic hearing and to evaluate the possible role of neural adaptation. Intensity DLs were measured for three modes of presentation: gated (intensity increments gated synchronous...

Eslicarbazepine acetate is an advanced antiseizure medication that improvement upon carbamazepine and oxcarbazepine. This novel regulates voltage-gated sodium channels provides fewer adverse effects better tolerability. Herein, we present the characteristics, pharmacokinetics, drug interactions of eslicarbazepine based on research has been conducted to date. Key words: acetate; Pharmacokinetics...

OBJECTIVE Our goal was to determine the impact of ECG gating and different postprocessing techniques on 3D imaging of the bronchial tree. SUBJECTS AND METHODS. Retrospective ECG-gated MDCT and non-ECG-gated MDCT of the chest were performed in 25 patients. ECG-gated MDCT data were reconstructed mid diastole using a fixed interval of -400 msec in 25 patients and then additionally at -200, -300, a...