We report high-throughput optical coherence tomography (OCT) that offers 1,000 times higher axial scan rate than conventional OCT in the 800 nm spectral range. This is made possible by employing photonic time-stretch for chirping a pulse train and transforming it into a passive swept source. We demonstrate a record high axial scan rate of 90.9 MHz. To show the utility of our method, we also dem...

BACKGROUND The purpose of this study was to determine the detection rate of lung metastasis or a synchronous lung primary tumor in patients with newly diagnosed head and neck mucosal squamous cell carcinoma (SCC) and to determine factors that are associated with positive findings. METHODS This was a prospective cohort study of 102 patients with head and neck mucosal SCC diagnosed in a tertiar...

Transform coefficient scan is an important procedure of video coding. In video coding standards such as MPEG2, H.264 and AVS, there are zig-zag scan for frame coding and field scan for field coding. In this paper, a novel adaptive coefficient scanning scheme for inter-prediction coding is proposed. This scheme includes scanning pattern generation based on DCT energy statistical calculation and ...

The high temperature magnetic and structural properties of an amphiphilic iron(III) spin crossover complex are reported. Thermal cycling reveals a scan rate-dependent 20 K thermal hysteresis in the mT vs T data close to room temperature. A fast scan rate is essential for the hysteresis but it is robust and reproducible after multiple thermal cycles. Differential scanning calorimetry and cross ...

Objectives  To determine whether real-time passive notification of patient radiation exposure via a computerized physician order entry system would alter the number of computed tomography scans ordered by physicians in the Emergency Department (ED) setting. Methods  When a practitioner ordered a computed tomography scan, a passive notification was immediately and prominently displayed via the c...

Abstract A theory is presented by which voltammograms, and dynamic electrochemical impedance spectroscopy (dEIS) measurements of redox processes surface‐confined species can be analyzed. By the proposed procedure, from a set voltammograms taken at varied scan‐rates, two scan‐rate independent, hysteresis‐free functions potential calculated. One them characterizes kinetics, other electrode charge...

Abstract Selective laser melting (SLM) has potential benefits for additive manufacturing of complex and precise metal parts with required mechanical material properties. However, the improvement surface quality minimization fabrication time still remark a challenge efficient by SLM. Among process parameters, scan strategy significant influence on stability final manufactured three-dimensional p...

Coordinated scan can gather host information for further attack more efficiently and stealthily than single-source port scans by distributing tasks amongst multiple sources. The existing coordinated scan detection methods are mostly based on scan behavior characteristics in temporal or spatial correlation. However, these detection methods can be easily evaded with the increasingly sophisticated...