Multisource inverse-geometry CT. Part I. System concept and development

A prototype table-top inverse-geometry volumetric CT system.

A table-top volumetric CT system has been implemented that is able to image a 5-cm-thick volume in one circular scan with no cone-beam artifacts. The prototype inverse-geometry CT (IGCT) scanner consists of a large-area, scanned x-ray source and a detector array that is smaller in the transverse direction. The IGCT geometry provides sufficient volumetric sampling because the source and detector...

Part I: Concept and Theory

The European Flood Alert System – Part 1: Concept and development

Papers published in Hydrology and Earth System Sciences Discussions are under open-access review for the journal Hydrology and Earth System Sciences Abstract This paper presents the development of the European Flood Alert System (EFAS), which aims at increasing preparedness for floods in trans-national European river basins by providing local water authorities with medium-range and probabilisti...

An inverse-geometry volumetric CT system with a large-area scanned source: a feasibility study.

We propose an inverse-geometry volumetric CT system for acquiring a 15-cm volume in one rotation with negligible cone-beam artifacts. The system uses a large-area scanned source and a smaller detector array. This note describes two feasibility investigations. The first examines data sufficiency in the transverse planes. The second predicts the signal-to-noise ratio (SNR) compared to a conventio...

Passive velocity field control (PVFC). Part I. Geometry and robustness

Passive velocity field control (PVFC) is a control methodology for fully actuated mechanical systems, in which the motion task is specified behaviorally in terms of a velocity field (as opposed to a timed trajectory), and the closed-loop system is passive with respect to a supply rate given by the environment power input. It is intended for safety critical and coordination intensive application...