Breast imaging represents a relatively recent and promising field of application of quantitative diffusion-MRI techniques. In view of the importance of guaranteeing and assessing its reliability in clinical as well as research settings, the aim of this study was to specifically characterize how the main MR scanner system-related factors affect quantitative measurements in diffusion-MRI of the b...

PURPOSE The purpose of this paper is to characterize EBT3 using two types of scanner, analyzing the factors of influence of each dosimetry system. METHODS The film used in this study was GAFCHROMIC EBT3, the films were exposed at a dose range between 0Gy a 9Gy in a solid water phantom, SSD=100cm, 5cm depth and perpendicularly to the 6MV photon beam generated by a Novalis TX linear accelerator...

OBJECTIVES To develop a mathematical model for multi-category patient scheduling decisions in computed tomography (CT), and to investigate associated tradeoffs from economic and operational perspectives. METHODS We modeled this decision-problem as a finite-horizon Markov decision process (MDP) with expected net CT revenue as the performance metric. The performance of optimal policies was comp...

Bill Miller S phosphors (image plates) have replaced film as the detection medium of choice for accurate collection of diffraction data on high flux beam lines such as A1 and F1. Storage phosphors have good spatial resolution, digitizing an 8" x 10" area into approximately 2000 x 2500 100x100 micron2 pixels. They also have a very high dynamic range of 104, and do not suffer from count rate limi...

This paper discusses a new methodology for scanner generation that supports language independent lexicon speci cation and automatic generation of stand alone lexical analyzers from speci cations. The mechanism that sits at the basis of this methodology is the layering of the lexicon speci cation on two levels: in the rst level, \universal" lexical constructs which are used as building blocks by...

Pan African Medical Journal. 2017;26:20. doi:10.11604/pamj.2017.26.20.10353 This article is available online at: http://www.panafrican-med-journal.com/content/article/26/20/full/ © Traore Ababacar Abdoulaye et al. The Pan African Medical Journal ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/lice...

To monitor the beam profile in injector of BEPCII which is the upgrade project of Beijing Electron Positron Collider (BEPC). Several beam diagnostic and monitoring instruments are used. Wire scanner as a new diagnostic instrument was designed and manufactured to measure the beam profile at the end of linac in 2007.During the shutdown period of BEPCII we had installed the system at the end of li...

We test the accuracy and density of mobile lidar-based scanners compare them with performance a static scanner. This is achieved by systematically scanning rectangular target at growing distance, collating statistics scans comparing them. study shows that outputted scanner about 20 times better 5 meters than those produced devices this gap further increases along distance. The drops distance fo...

the aim of digital subtraction of radiographic images is eliminating the additional shades to increase the resolution and quality of the images. in dentistry, digital subtraction technique can be used for diagnosis of progressive periodontal diseases or evaluation of the amount of jaw bone repair or destruction. in this study, the possibility of digital subtraction with non-expensive techniques...

T. Grafendorfer, N. I. Matter, R. D. Venook, S. E. Ungersma, G. E. Gold, N. J. Giori, B. A. Hargreaves, J. M. Pauly, A. Macovski, G. C. Scott, and S. M. Conolly GE Global Health, CA, Electrical Engineering, Stanford University, CA, Stanford University, CA, Radiology, Stanford University, CA, Orthopedic Surgery, Stanford University, CA, Bioengineering, UC Berkeley, Berkeley, CA, United States, E...