نتایج جستجو برای: Optical imaging system

تعداد نتایج: 2807792  

Journal: :nephro-urology monthly 0
athanasios dellis department of urology, school of medicine, sismanoglio hospital, university of athens, athens, greece; department of surgery, school of medicine, areteion hospital, university of athens, athens, greece athanasios papatsoris department of urology, school of medicine, sismanoglio hospital, university of athens, athens, greece; department of urology, school of medicine, sismanoglio hospital, university of athens, athens, greece. tel: +30-2132058253, fax: +30-2108044703

B Ghafary D Abbasi-Moghadam E Peighani-Asl, V Tabataba-Vakili

Remote sensing using small spacecraft arising from multi-objective economic activity problems is getting more and more developed. These satellites require very accurate pointing to specific locations of interest, with high reliability and small latency. The space borne imaging systems always attempted to achieve the highest ground resolution possible with the available technology at the given t...

Objectives: In this article, a new procedure for increasing the light penetration depth in a tissue is studied and simulated. It has been reported that the most important problem in biomedical optical imaging relates to the light penetration depth, and so this makes a dramatic restriction on its applications. In the optical imaging method, the detection of the backscattered pho...

Journal: :journal of current ophthalmology 0
محمد ریاضی اصفهانی mohammad riazi esfahani صدیقه کهنسال sedigheh kohansal فدرا حاجی زاده fedra hajizadeh امیرحسین محمودی amir hossein mahmoudi

purpose : to report the evaluation of the treatment response in choroidal hemangioma with application of enhanced depth imaging optical coherence tomography (edi-oct) technique case report : a 73-year-old woman with a circumscribed choroidal hemangioma in the posterior pole of her left eye underwent photodynamic therapy and intravitreal injection of bevacizumab. edi-oct obtained from the affect...

Journal: :علوم و فناوری فضایی 0
e peighani-asl d abbasi-moghadam b ghafary v tabataba-vakili

remote sensing using small spacecraft arising from multi-objective economic activity problems is getting more and more developed. these satellites require very accurate pointing to specific locations of interest, with high reliability and small latency. the space borne imaging systems always attempted to achieve the highest ground resolution possible with the available technology at the given t...

ژورنال: مجله دندانپزشکی 2002
طلایی پور, احمدرضا, باشی زاده فخار, حوریه , دباغی, آرش ,

Nowadays, bone mass estimation, through imaging methods, is widely used in metabolic diseases diagnosis and treatment. One of these methods is called "optical densitometry" which estimates bone density by measuring the intensity of the transmitted light on different parts of a radiographic image. Digital radiography systems act similarly by determining grey levels of the image. The aim of this ...

Journal: :journal of medical signals and sensors 0
seyed salman zakariaee mikaeil molazadeh abbas takavar alireza shirazi asghar mesbahi ahad zeinali

in radiation cancer treatments, the most of the side effects could be minimized using a proper dosimeter. gel dosimeter is the only three‑dimensional dosimeter and magnetic resonance imaging (mri) is the gold standard method for gel dosimeter readout. because of hard accessibility and high cost of sample reading by mri systems, some other alternative methods were developed. the optical computed...

2017
A. V. Kozhevnikov

This work presents a study of the influence and compensation of aberrations in optical imaging systems by superimposing surfaces described by Zernike polynomials. The aim is to investigate how to compensate for aberrations and their effectiveness when dealing with aberrations of different types. The study is done in the Zemax packet by modeling the optical imaging system and passing test images...

Journal: :Optics letters 2011
İlker R Çapoğlu Craig A White Jeremy D Rogers Hariharan Subramanian Allen Taflove Vadim Backman

Rigorous numerical modeling of optical systems has attracted interest in diverse research areas ranging from biophotonics to photolithography. We report the full-vector electromagnetic numerical simulation of a broadband optical imaging system with partially coherent and unpolarized illumination. The scattering of light from the sample is calculated using the finite-difference time-domain (FDTD...

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