Results 31 to 40 of about 138,112 (286)

Design and performance of a compact and stationary microSPECT system [PDF]

, 2013
Purpose: Over the last ten years, there has been an extensive growth in the development of microSPECT imagers. Most of the systems are based on the combination of conventional, relatively large gamma cameras with poor intrinsic spatial resolution and ...
Accorsi, Amano, Barrett, Beekman, Beekman, Bert Vandeghinste, Branderhorst, Deleye, Deprez, Deprez, Franc, Funk, Furenlid, Furenlid, Goorden, Have, Have, Hesterman, Joseph, Karel Deprez, Kim, Lackas, Lin, McElroy, Metzler, Mok, Nillius, Roel Van Holen, Rogulski, Schramm, Segars, Stefaan Vandenberghe, Van Holen, Vandeghinste, Vunckx   +34 more
core   +2 more sources

Diffusion Capillary Phantom vs. Human Data: Outcomes for Reconstruction Methods Depend on Evaluation Medium

Frontiers in Neuroscience, 2016
Purpose: Diffusion MRI provides a non-invasive way of estimating structural connectivity in the brain. Many studies have used diffusion phantoms as benchmarks to assess the performance of different tractography reconstruction algorithms and assumed that ...
Sarah D. Lichenstein, Sarah D. Lichenstein, James H. Bishop, Timothy D. Verstynen, Timothy D. Verstynen, Fang-Cheng Yeh   +5 more
doaj   +1 more source

Dosimetric validation of a magnetic resonance image gated radiotherapy system using a motion phantom and radiochromic film. [PDF]

, 2017
PurposeMagnetic resonance image (MRI) guided radiotherapy enables gating directly on the target position. We present an evaluation of an MRI-guided radiotherapy system's gating performance using an MRI-compatible respiratory motion phantom and ...
Berbeco, Brady, Chuang, Fayad, Freislederer, Garibaldi, Giraud, Jin, Keall, Kini, Koch, Lewis, Low, Malinowski, Nioutsikou, Ozhasoglu, Sanders, Seppenwoolde, Shiinoki, Shirato, Smith, Tacke, Voort, Wagman, Wiersma, Wojcieszynski, Wunderink, Yoganathan, Yousefi   +28 more
core   +1 more source

A Rotational Cylindrical fMRI Phantom for Image Quality Control. [PDF]

PLoS ONE, 2015
A novel phantom for image quality testing for functional magnetic resonance imaging (fMRI) scans is described.The cylindrical, rotatable, ~4.5L phantom, with eight wedge-shaped compartments, is used to simulate rest and activated states. The compartments
David A Tovar, Wang Zhan, Sunder S Rajan
doaj   +1 more source

Artificial neural network-statistical approach for PET volume analysis and classification [PDF]

, 2012
Copyright © 2012 The Authors. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.This ...
Abbod, Maysam, Abbod, Maysam, Amira, Abbes, Amira, Abbes, Sharif, M., Sharif, M., Zaidi, Habib, Zaidi, Habib   +7 more
core   +4 more sources

The effect of spatial resolution on the reproducibility of diffusion imaging when controlled signal to noise ratio

Biomedical Journal, 2019
Background: The purpose of the study is to evaluate the reproducibility and repeatability of the compartmental diffusion measurement. Methods: Two identical whipping cream phantoms and two healthy Sprague–Dawley rats were scanned on a 7T MR scanner, each
Yao-Liang Chen, Yu-Jen Lin, Sung-Han Lin, Chih-Chien Tsai, Yu-Chun Lin, Jur-Shan Cheng, Jiun-Jie Wang   +6 more
doaj   +1 more source

Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation

, 2011
Recently, X-ray imaging dose from computed tomography (CT) or cone beam CT (CBCT) scans has become a serious concern. Patient-specific imaging dose calculation has been proposed for the purpose of dose management.
Briesmeister J F, DeMarco J J, DeMarco J J, Gu X, Gu X, Gu X J, Gu X J, Hao Yan, Hirayama H, Jacques R, Jarry G, Jia X, Jia X, L’Ecuyer P, Marsaglia G, Men C, Men C H, NVIDIA, NVIDIA, Salvat F, Steve B Jiang, Woodcock E, Xuejun Gu, Xun Jia   +23 more
core   +1 more source

Digital mouse phantom for optical imaging

Journal of Biomedical Optics, 2007
We present a method for design and use of a digital mouse phantom for small animal optical imaging. We map the boundary of a mouse model from magnetic resonance imaging (MRI) data through image processing algorithms and discretize the geometry by a finite element (FE) descriptor.
Shekhar, Dwivedi, Kajoli B, Krishnan, Srikanth, Suryanarayanan   +2 more
openaire   +2 more sources

Practical aspects of a data-driven motion correction approach for brain SPECT [PDF]

, 2003
Patient motion can cause image artifacts in single photon emission computed tomography despite restraining measures. Data-driven detection and correction of motion can be achieved by comparison of acquired data with the forward projections.
Barnden, L.R., Hatton, R.L., Hutton, B.F., Kyme, A.Z., Skerrett, D.W.   +4 more
core   +1 more source

iPads in Breast Imaging – A Phantom Study [PDF]

Geburtshilfe und Frauenheilkunde, 2014
Introduction: Modern tablet PCs as the iPad are becoming more and more integrated into medicine. The aim of this study was to evaluate the display quality of iPads regarding digital mammography. Materials and Methods: Three experienced readers compared the display quality of the iPad 2 and 3 with a dedicated 10 megapixel (MP) mammography liquid crystal
M, Hammon, P M, Schlechtweg, R, Schulz-Wendtland, M, Uder, S A, Schwab   +4 more
openaire   +2 more sources