Results 61 to 70 of about 138,343 (192)

A novel 3D-printed head phantom with anatomically realistic geometry and continuously varying skull resistivity distribution for electrical impedance tomography

Scientific Reports, 2017
Phantom experiments are an important step for testing during the development of new hardware or imaging algorithms for head electrical impedance tomography (EIT) studies.
Jie Zhang, Bin Yang, Haoting Li, Feng Fu, Xuetao Shi, Xiuzhen Dong, Meng Dai   +6 more
doaj   +1 more source

Multimodal phantom of liver tissue. [PDF]

PLoS ONE, 2013
Medical imaging plays an important role in patients' care and is continuously being used in managing health and disease. To obtain the maximum benefit from this rapidly developing technology, further research is needed.
Magdalena K Chmarra, Rune Hansen, Ronald Mårvik, Thomas Langø   +3 more
doaj   +1 more source

Phantom studies in medical imaging (PSMI): a guide with recommendations and checklist

European Radiology Experimental
Phantom studies are essential in medical imaging, offering a controlled and reproducible framework for evaluating imaging technologies across all modalities.
Gisella Gennaro, Moreno Zanardo, Federico Ambrogi, Francesco Sardanelli   +3 more
doaj   +1 more source

Design and Performance Assessment of a High-Resolution Small-Animal PET System

Bioengineering
This work reports the performance evaluation of a newly developed small-animal positron emission tomography (PET) system based on lutetium-yttrium oxyorthosilicate (LYSO) crystals and multi-pixel photon counter (MPPC).
Wei Liu, Peng Xi, Jiguo Liu, Xilong Xu, Zhaoheng Xie, Yanye Lu, Xiangxi Meng, Qiushi Ren   +7 more
doaj   +1 more source

Silicone breast phantoms for elastographic imaging evaluation [PDF]

Medical Physics, 2013
Purpose:Breast cancer is a major public health issue for women, and early detection significantly increases survival rate. Currently, there is increased research interest in elastographic soft‐tissue imaging techniques based on the correlation between pathology and mechanical stiffness. Anthropomorphic breast phantoms are critical forex vivo validation
Kashif, A.S., Lotz, T.F., McGarry, M.D., Pattison, A.J., Chase, Geoff   +4 more
openaire   +3 more sources

Materials for phantoms for terahertz pulsed imaging [PDF]

Physics in Medicine and Biology, 2004
Phantoms are commonly used in medical imaging for quality assurance, calibration, research and teaching. They may include test patterns or simulations of organs, but in either case a tissue substitute medium is an important component of the phantom. The aim of this work was to identify materials suitable for use as tissue substitutes for the relatively
Walker, G.C., Berry, E., Smye, S.E., Brettle, D.S.   +3 more
openaire   +3 more sources

Functional imaging equivalence and proof of concept for image-guided adaptive radiotherapy with fixed gantry and rotating couch

Advances in Radiation Oncology, 2016
Purpose: The purpose of this article is to present the first imaging experiments to demonstrate the functional equivalence between a conventional rotational gantry and a fixed-beam imaging geometry, and the feasibility of an iterative image ...
Ilana Feain, PhD, Chun-Chien Shieh, PhD, Paul White, MMedPhys, Ricky O'Brien, PhD, Sandra Fisher, MMedPhys, William Counter, PhD, Peter Lazarakis, PhD, David Stewart, BRadTherapy, Simon Downes, MMedPhys, Michael Jackson, MBBS, Siddhartha Baxi, MBBS, Brendan Whelan, PhD, Kuldeep Makhija, BSc, Chen-Yu Huang, PhD, Michael Barton, MBBS, Paul Keall, PhD   +15 more
doaj   +1 more source

Comparison of Online 6 Degree-of-Freedom Image Registration of Varian TrueBeam Cone-Beam CT and BrainLab ExacTrac X-Ray for Intracranial Radiosurgery. [PDF]

, 2017
PURPOSE: The study was aimed to compare online 6 degree-of-freedom image registrations of TrueBeam cone-beam computed tomography and BrainLab ExacTrac X-ray imaging systems for intracranial radiosurgery.
Andrews, David W., Dicker, Adam, MD, PhD, Li, Jun, Lu, Bo, Lui, Haisong, Shi, Wenyin, Werner-Wasik, Maria, Yu, Yan   +7 more
core   +1 more source

Spatial transformations of diffusion tensor magnetic resonance images [PDF]

, 2001
The authors address the problem of applying spatial transformations (or “image warps”) to diffusion tensor magnetic resonance images. The orientational information that these images contain must be handled appropriately when they are transformed ...
Alexander, D.C., Basser, P.J., Gee, J.C., Pierpaoli, C.   +3 more
core  

Investigation of iterative image reconstruction in three-dimensional optoacoustic tomography

, 2012
Iterative image reconstruction algorithms for optoacoustic tomography (OAT), also known as photoacoustic tomography, have the ability to improve image quality over analytic algorithms due to their ability to incorporate accurate models of the imaging ...
Alexander A Oraevsky, Barrett H H, Elbau P, Kun Wang, Kunyansky L A, Mark A Anastasio, Pan X, Richard Su, Wang L V, Wernick M N   +9 more
core   +1 more source