Background The progression of FLAIR white matter hyperintensities (WMHs) on MRI heralds vascular-mediated cognitive decline. Even before WMH progression, adjacent normal appearing (NAWM) already demonstrates microstructural deterioration diffusion tensor imaging (DTI). We hypothesized that elevated DTI free water (FW) would precede implicating interstitial fluid accumulation as a key pathologic...

Dear Editor, Jung et al. [1] are to be congratulated on definitively demonstrating what could only be surmised in the past— that intraocular angiogenesis after central retinal artery occlusion (CRAO) occurs in that small proportion of cases wherein retinal reperfusion fails to materialize [2,3]. However, your contributors appear to be unsure as to the mechanism whereby neovascularisation of the...

We used the Swarm-C accelerometer data to invert orbital atmospheric density in this study. First, satellite mission were obtained from ESA’s public platform, and preliminary error correction was performed. This paper refers calibration method of GRACE-A data. It adds linear temperature on original basis. Moreover, study’s results compared with published by ESA. In order explore influence light...

Existing endovascular options for lower extremity and visceral arterial thromboembolism face the challenges of limited trackability, vessel injury, and incomplete revascularization. At the forefront of advances in catheter materials and technology, Penumbra, Inc. recently introduced the IndigoTM System for mechanical thrombectomy in the periphery. The Indigo System is designed to address the li...

Aims. We investigate the dependence of penumbral microjets inclination on the position within penumbra. Methods. The high cadence observations taken on 10 November 2006 with the Hinode satellite through the Ca ii H and G–band filters were analysed to determine the inclination of penumbral microjets. The results were then compared with the inclination of the magnetic field determined through the...

Background: In Radiation Therapy, the sparing of normal tissues can be performed using either multi-leaf collimators or Cerrobend blocks. The current work focuses on the physical characteristics of Cerrobend blocks including attenuation coefficient, effective penumbra width and isodose curves undulation in penumbral regions. Materials and Methods: All measurements were performed using ...

Giant aneurysms have been treated with endovascular approaches like general, balloon-assisted and stent-assisted coiling, and flow diverter stent-assisted techniques. Few cases have been reported to be treated with both normal and large coils. Despite the mass effect, an adequate revascularization has been reported. An initial use of these coils is being reported in the current study. This is a...

background: field matching problems in abutting electron fields can be managed by using spoilers. objective: the aim of this study was to design a monte carlo framework for the assessment of spoiler application in abutting electron fields. methods: a siemens primus treatment head was simulated for a 5 mev electron beam using beamnrc and dosxyznrc, egsnrc user codes. validation of beam model was...

Time is a fundamental factor during stroke treat-ments. A fast, automatic approach that segmentsthe ischemic regions helps treatment decisions. In clinical use today, set of color-coded parametric maps generated from computed tomography per-fusion (CTP) images are investigated manually to decide plan. We propose an method based on neural network using segment the two (core and penumbra) in pati...