نتایج جستجو برای: biological phantom

تعداد نتایج: 480117  

Journal: :Applied optics 2003
Adam B Milstein Seungseok Oh Kevin J Webb Charles A Bouman Quan Zhang David A Boas R P Millane

A nonlinear, Bayesian optimization scheme is presented for reconstructing fluorescent yield and lifetime, the absorption coefficient, and the diffusion coefficient in turbid media, such as biological tissue. The method utilizes measurements at both the excitation and the emission wavelengths to reconstruct all unknown parameters. The effectiveness of the reconstruction algorithm is demonstrated...

Journal: :Journal of the Optical Society of America. A, Optics, image science, and vision 2010
W Cong G Wang

A reconstruction method of bioluminescence sources is proposed based on a phase approximation model. Compared with the diffuse approximation, this phase approximation model more correctly predicts bioluminescence photon propagation in biological tissues, so that bioluminescence tomography can accurately locate and quantify the distribution of bioluminescence sources. The compressive sensing (CS...

Journal: :Physical review applied 2021

Optical pump-probe setups are commonly used for excitation and investigation of the spin dynamics in various types magnetic materials. Usually spatially homogeneous is considered, but here authors describe optical $n\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}u\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}f\phantom{\rule{0}{0ex}}o\phantom{\rul...

2009
Michael Altman

s Presented at National or International Scientific Conferences: Altman MB, Vesper BJ, Smith BD, Stinauer, MA, Pelizzari CA, Aydogan B, Radosevich JA, Chmura SJ, Roeske JC. Dosimetric Characterization and Biological Validation of a Novel Phantom for Three-Dimensional IMRT-Based in Vitro Experiments. Med Phys. 35(6): 2816. 2008 Hoggarth MA, Stinauer MA, Altman MB, Roeske JC. Automated Colony Cou...

Journal: :Frontiers in oncology 2015
Manjit Dosanjh Manuela Cirilli Sparsh Navin

Between 2011 and 2015, the ENTERVISION Marie Curie Initial Training Network has been training 15 young researchers from a variety of backgrounds on topics ranging from in-beam Positron Emission Tomography or Single Particle Tomography techniques, to adaptive treatment planning, optical imaging, Monte Carlo simulations and biological phantom design. This article covers the main research activiti...

Journal: :Physical review applied 2021

Neurons exhibit $e\phantom{\rule{0}{0ex}}x\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}b\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}l\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}t\phantom{\rule{0}{0ex}}y$, the dynamical property that is likewise key to biologically inspired artificial intelligence. The neuromorphic c...

2017
Da-Ming Yeh Ching-Yuan Chen Jing-Fa Tang Lung-Kwang Pan

This study examined the feasibility of quantitatively evaluating multiple biokinetic models and established the validity of the different compartment models using an assembled water phantom. Most commercialized phantoms are made to survey the imaging system since this is essential to increase the diagnostic accuracy for quality assurance. In contrast, few customized phantoms are specifically ma...

2006
J. Laufer C. Elwell D. Delpy P. Beard

Photoacoustic spectroscopy has the potential to make non-invasive, spatially resolved measurements of absolute chromophore concentrations. This has a wide range of possible applications, for example the mapping of endogenous chromophores such as oxy(HbO2) and deoxyhaemoglobin (HHb) or externally administered contrast agents designed to target specific tissues or molecular processes. In this stu...

Journal: :Physical review 2021

It has been a long-standing problem in $N$-electron systems as to how solve the Dyson equation with quasiparticle wave functions defined $\ensuremath{\langle}\phantom{\rule{0.16em}{0ex}}{\mathrm{\ensuremath{\Psi}}}_{0}^{N}\phantom{\rule{0.16em}{0ex}}|\phantom{\rule{0.16em}{0ex}}{\ensuremath{\psi}}_{s}(\mathbit{r})\phantom{\rule{0.16em}{0ex}}|\phantom{\rule{0.16em}{0ex}}{\mathrm{\ensuremath{\Psi...

ژورنال: سنجش و ایمنی پرتو 2020

Nowadays, in order to improve the accuracy of treatment in radiation therapy, there are many attempts to use magnetic resonance imaging (MRI) due to the advantages of excellent soft tissue contrast and ultra-fast pulse sequences. On the other hand, carbon-ion radiation therapy is developing rapidly due to the benefits of greater relative biological effectiveness (RBE) and the application in the...

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