If you’ve ever found yourself struggling under a heavy pile of suitcases at the end of a holiday, spare a thought for the porters in some of the planet’s most remote locations. ‘When you start looking around, professional porters all around the world carry loads supported by their heads’, says Norman Heglund, from the Université catholique de Louvain, Belgium, who is fascinated by the technique...

In this work, we propose a new median-finding algorithm which computes the median value in an input list of integers on-the-fly, without any data-sorting operations. We present a complete digital CMOS implementation, associated timing diagrams, and a formal mathematical proof, which show the overall average number of clock cycles for median-finding to be linearly proportional to the input lengt...

Varian introduced (in 2010) the option of removing the flattening filter (FF) in their C-Arm linacs for intensity-modulated treatments. This mode, called flattening filter-free (FFF), offers the advantage of a greater dose rate. Varian's "Portal Dosimetry" is an electronic portal imager device (EPID)-based tool for IMRT verification. This tool lacks the capability of verifying flattening filter...

P a t i e n t s 736 patients (mean age 59 y, 53% women) who had symptomatic PDVT or pulmonary embolism, or both, or symptomatic CDVT confirmed by objective diagnostic tests. Exclusion criteria included pregnancy, breastfeeding, vena cava filter implantation, surgical thrombectomy, free-floating thrombus in the inferior vena cava, active cancer or malignant hematologic disease, or a previous ven...