Background Endovascular embolization of the middle meningeal artery (MMA) has emerged as an adjunctive and stand-alone modality for management chronic subdural hematomas (cSDH). We report our experience utilizing proximal MMA coil to augment cSDH devascularization in embolization. Methods cases with coiling were retrospectively identified from a prospectively maintained IRB-approved database senior authors. Results Of 137 cases, all patients (n = 89, 100%) symptomatic underwent procedure...

ABSTRACT We present an innovative approach to understanding permafrost degradation processes through the application of new environment‐based particle image velocimetry (E‐PIV) time‐lapse imagery and correlation with synchronous temperature rainfall measurements. Our extracting quantitative vector movement from dynamic environmental conditions that can change both position color balance each has optimized trade‐off between noise reduction preserving authenticity data. Despite polar...

Introduction Flow diverting stents (FDS) are routinely used to reconstruct the arteries of head and neck. When placed into mobile cervical internal carotid artery (cICA) segment, FDS runs risk post-procedure stent migration proximal intimal hyperplasia reaction from physiologic movement We report our experience using a novel anchoring technique during endovascular flow reconstruction complex petrocervical dissections prevent this potentially deleterious result. Methods reviewed prospectively...

BACKGROUND AND OBJECTIVES: After surgical drainage of a chronic subdural hematoma (cSDH), middle meningeal artery (MMA) embolization aids in preventing the revascularization cSDH membranes at capillary level and, turn, reaccumulation. With MMA circulation ipsilateral to side often being disrupted, there is recruitment collaterals from contralateral tree membranes. The aim this study was demonstrate ability additive liquid embolic (LE) injection after surgery augment embolization. We...

Localization in wireless networks presents enormous challenges for scientists and engineers. Some of the most commonly used techniques localization are based on time arrival (ToA), received signal strength (RSS) angle (AoA) signals. In this paper we analyze propose improvements to location accuracy hybrid (AoA-ToA) systems. The coordinates obtained using a linear least squares (LLS) algorithm. A closed form expression mean square error (MSE) LLS estimator is derived. Furthermore, information...

In this study, the authors introduce a novel hybrid cooperative localisation scheme when both distance and angle measurements are available. Two linear least squares (LLS) schemes based on of arrival–time arrival (AoA–ToA) AoA–received signal strength (AoA–RSS) signals proposed. The proposed algorithms modified to accommodate in resource constrained networks where only available between target sensors (TSs) while reference TSs. Furthermore, an optimised version LLS estimator is further...

Identifying precursor events that allow the timely forecasting of landslides, thereby enabling risk reduction, is inherently difficult. Here we present a novel, low cost, flow visualization technique using time-lapsed imagery (TLI) allows real time analysis slope movement. This approach applied to Rest and Be Thankful slope, Argyle, Scotland, where past debris flows have blocked A83 or forced preemptive closure. TLI are taken from fixed station, 28 mm lens, lapse camera every 15 min. Imagery...

Introduction Superbore 0.088″ catheters provide a platform for optimizing aspiration efficiency and flow control during stroke mechanical thrombectomy procedures. New superbore have the distal flexibility necessary to navigate complex neurovascular anatomy while providing proximal support of traditional 8F catheters. The safety feasibility Zoom 88™ angled-tip in middle cerebral artery (MCA) segments smaller than catheter diameter not been previously described. Methods Twenty consecutive...

Tracking of wireless nodes such as robots in sensor network (WSN) has been widely studied literature. Most these studies are based on the Kalman filter (KF) for linear models corrupted by Gaussian noise, extended (EKF) non and particles (PF) which does no require model o be nor noise Gaussian. In his paper, we present a comparative study mobile target node (TN) racking via KF, EKF PF received power signal. A constant velocity is considered motion TN, depicting an indoor environment. The...

Localization has been one of the most highly researched topics in wireless communications past decade. nodes can be achieved using a variety techniques, which range measurement and angle are commonly used. In presence both measurement, hybrid model developed. this paper we analyze arrival-time arrival (AoA-ToA) for localization nodes, is modified to remove bias from estimated positions. We also explore idea cooperative measurements develop linear least squares (LLS) scheme. It shown via...

Rapid shallow landslides are a significant hillslope erosion mechanism and limited understanding of their initiation development results in persistent risk to infrastructure. Here, we analyse the slope above strategic A83 Rest be Thankful road west Scotland. An inventory 70 (2003–2020) shows three types landslide, debris flows, creep deformation, falls. Debris flows dominate account for 5,350 m3 (98%) shallow-landslide source volume across site. We use novel time-lapse vector tracking detect...

Filter bank multicarrier scheme is an efficient and candidate waveform for 5G. Similar to OFDM other schemes, FBMC also has high Peak-to-Average Power Ratio (PAPR) which leads us the use of power amplifiers with dynamic range. Companding techniques are used reduce PAPR at expense bit error rate (BER) performance degradation. In this paper, a novel usage A-law Mu-law companding reduction FBMC-OQAM proposed. The paper investigates tradeoff between Bit using techniques. Simulation results have...

The non-resonant magnetic perturbation (MP) braking is studied in the EXTRAP T2R reversed-field pinch (RFP) and experimental torque compared with expected by neoclassical toroidal viscosity (NTV) theory. active coils can apply perturbations a single harmonic, either resonant or non-resonant. MP produces velocity an that affects large part of core region. clearly related to plasma displacement, consistent quadratic dependence as NTV work show good qualitative agreement between RFP machine...

Acoustic communication in the underwater wireless sensor network has many challenges due to limited bandwidth and propagation loss attracted researchers past decade. The diversity of an acoustic channel time-variant nature can cause divergence signal strength add some great impact on accomplishment systems. A model plays a vital role classify consummation understanding system. In channels, shallow water is one challenging medium deal with time varying multipath Doppler Effect. Some deep...

In order to achieve higher location estimation accuracy through utilizing all the available information, in this paper we propose a hybrid localization system. We use angle of arrival (AoA) measurement with inherent received signal strength (RSS) information develop an AoA-RSS linear least squares (LLS) estimator. To accurately predict performance LLS estimator, closed form expression for mean square error (MSE) is also derived. Furthermore, present covariance incoming signals utilized and...

Global navigation satellite system (GNSS) has been considered as a panacea for positioning and tracking since the last decade. However, it suffers from severe limitations in terms of accuracy, particularly highly cluttered indoor environments. Though real-time kinematics (RTK) supported GNSS promises extremely accurate localisation, employing such services are expensive, fail occluded environments unavailable areas where cellular base stations not accessible. It is, therefore, necessary that...

Recent literature continues to demonstrate the successful role of large-bore aspiration catheters in thrombus ingestion during mechanical thrombectomy. However catheter-to-microwire step-off and distal navigation are ongoing challenges A new market 0.035' macrowire (Aristotle 35 Colossus Guidewire, Scientia Vascular, West Vale City, UT) may address such challenges. We report here our early experience 30 thrombectomy cases.