All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, mechanical, photocopying, recording or otherwise, without prior written permission of the publishers. For those organizations that have been granted a photocopy license, a separate system of payment has been arranged. Authorization does not extend to othe...

BACKGROUND Using polyp-phantoms we previously found a wide inter- and intra-observer variation in size assessment. MATERIALS AND METHODS Twenty-five endoscopically-resected colorectal polyps were conventionally measured with a millimetre ruler and subsequently placed on a photocopier. Two measurements (one week apart) were made on the photocopies, between two marks limiting the largest dimens...

Copy toner samples were analyzed using scanning electron microscopy with X-ray dispersive analysis (SEM-EDX) and pyrolysis gas chromatography/mass spectrometry (Py-GC/MS). Principal component and cluster analysis of SEM data for 166 copy toner samples established 13 statistically different subgroups, with the presence or absence of a ferrite base being a major division. When toners were compare...

The aim of this report is to present a new two-piece thyroid-neck phantom produced by the concurrent use of epoxy resin and poly(methyl methacrylate) (PMMA: plexiglass) soft tissue equivalent materials. Accordingly, mass attenuation coefficients of the epoxy resin and the plexiglass compounds were obtained from simulation (NIST XCOM 3.1) and measurements (practical dosimetry) and compared to th...

A multifunction printer enables the printing of time-based media. Based on received time-based media data, the printer produces a paper or other printed output as well as a related electronic output. Together, the printed and electronic outputs provide a representation of the time-based media. Depending on the desired application for the printer, the printer may include any combination of mecha...

In recent years, many methods have been proposed for the spectral-based characterization of inkjet printers. To our knowledge, the majority of these are based on a physical description of the printing process, employing different strategies to deal with mechanical dot gain and the physical interaction among inks. But our experience tells us that as printing is a physical process involving a lar...

A printing system for time-based data enables the printing of time-based media by sharing processing resources on a printer and on an external media processing system such as an external service, for example, a web service. The media processing may similarly be shared, as determined by a resource allocation module, or as indicated by a user via a user interface, between the printer and an exter...

Multispectral printer characterization requires an effective model to map printer input digital counts into reflectance spectra and vice versa. This paper presents a novel strategy to describe dot gain and interaction among inks in the definition of a printer model employing the Yule Nielsen Spectral Neugebauer equation. The method proposed, that requires the printing and measuring of a trainin...