نتایج جستجو برای: optical computed tomography

تعداد نتایج: 505498  

ژورنال: سنجش و ایمنی پرتو 2018

Monte Carlo method is the most accurate method for simulation of radiation therapy equipment. The linear accelerators (linac) are currently the most widely used machines in radiation therapy centers. Monte Carlo modeling of the Siemens Primus linear accelerator in 6 MeV beams was used. Square field size of 10 × 10 cm2 produced by the jaws was compared with TLD. Head simulation of Siemens accele...

2012
Hong Ding Fang Wu

Image guided technique is playing an increasingly important role in the investigation of the biodistribution and pharmacokinetics of drugs or drug delivery systems in various diseases, especially cancers. Besides anatomical imaging modalities such as computed tomography (CT), magnetic resonance imaging (MRI), molecular imaging strategy including optical imaging, positron emission tomography (PE...

Journal: :Biomedical optics express 2013
Yuanbo Wang Gang Yao

We developed a method to image myocardial fiber architecture in the mouse heart using a Jones matrix-based polarization-sensitive optical coherence tomography (PSOCT) system. The "cross-helical" laminar structure of myocardial fibers can be clearly visualized using this technology. The obtained myocardial fiber organization agrees well with existing knowledge acquired using conventional histolo...

Journal: :Optics express 2004
Magued Nasr Bahaa Saleh Alexander Sergienko Malvin Teich

Quantum optical coherence tomography (QOCT) makes use of an entangled twin-photon light source to carry out axial optical sectioning. We have probed the longitudinal structure of a sample comprising multiple surfaces in a dispersion-cancelled manner while simultaneously measuring the group-velocity dispersion of the interstitial media between the reflecting surfaces. The results of the QOCT exp...

2015
Brian White Joseph P. Culver Mark S. Conradi Timothy E. Holy James G. Miller Bradley L. Schlaggar Ralf Wessel Brian Richard White

of the Dissertation Developing High-Density Diffuse Optical Tomography for Neuroimaging

Journal: :International journal of ophthalmology 2015
Döndü Melek Ulusoy Necati Duru Mustafa Ataş Hasan Altınkaynak Zeynep Duru Gökhan Açmaz

AIM To investigate the effect of pregnancy on subfoveal choroidal thickness (SFCT) and macular thickness in both pregnant and not pregnant healthy women. METHODS Twenty-nine healthy pregnant women in their third trimester and 36 age-matched healthy women were enrolled in a prospective, cross-sectional study. Foveal and parafoveal thickness in the four quadrants and SFCT were measured by optic...

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