نتایج جستجو برای: lens dose

تعداد نتایج: 360067  

Gh. Parhizgari M. Aminlari, S. Gholami S. Ranjbar

The purpose of this investigation was to study and compare the electrophoretic patterns of optic lensproteins of different species of domestic animals at pre- and post-natal ages. Optic lenses were removed from the embryo or adult sheep, cattle, goat, camel and chicken at the slaughter-house then homogenized and subjected to sodium dodecylsulfate polyacrylamide gel electrophoresis (SDS-PAGE). I...

Journal: :iranian journal of medical physics 0
alireza karimian department of biomedical engineering, faculty of engineering, university of isfahan, isfahan, iran.

introduction proton therapy is used to treat malignant tumors such as melanoma inside the eye. proton particles are adjusted according to various parameters such as tumor size and position and patient’s distance from the proton source. the purpose of this study was to assess absorbed doses in eyes and various tumors found in the area of sclera and choroid and the adjacent tissues in radiotherap...

2015
Hamideh Nazemi-Gelyan Hadi Hasanzadeh Yasha Makhdumi Sara Abdollahi Fatemeh Akbari Fatemeh Varshoee-Tabrizi Hamzeh Almasrou Alireza Nikoofar Mostafa Rezaei-Tavirani

BACKGROUND Radiotherapy plays an important role in the management of most malignant and many benign primary central nervous system (CNS) tumors. Radiotherapy affects both tumor cells and uninvolved normal cells; so, it is important to estimate absorbed dose to organs at risk in this kind of treatment. The aim of this study was to determine the absorbed dose to chiasma, lens, optic nerve, retina...

Kiumars Noroozpour Dailami, Marjan Lashgari, Mohammad Azadbakht, Zahra Rashidi,

Echium amoenum is an Iranian indigenous medicinal plant. In this research the effect of hydroalchoholic extract of this plant on sodium-selenite induced cataract formation was evaluated. Fifty five white rat pups were selected and divided into six groups. In first group (control 1) no elements injected. Second group (control 2) was received normal saline on 11-18 postpartum. Hydroalchoholic ext...

Journal: :بینا 0
محمدحسین دهقان mh dehghan پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم رضا سلیمانی زاد r soleimanzad پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم حمید احمدیه h ahmadieh پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم محسن آذرمینا m azarmina پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم مسعود سهیلیان m soheilian پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم سیامک مرادیان s moradian پاسداران- بوستان نهم- بیمارستان لبافی نژاد- مرکز تحقیقات چشم معصومه ثناگو

purpose: to evaluate the clinical manifestations and results of lensectomy in patients with hereditary lens subluxation at labbafinejad medical center, tehran-iran from 1996 t 2003. method: in an interventional case series, records of patients with hereditary lens subluxation who had undergone lensectomy were reviewed. patients with at least 6 months of follow up were included. background disea...

Journal: :Journal of epidemiology 1999
O Hockwin M Kojima Y Sakamoto A Wegener Y B Shui K Sasaki

UV irradiation has the potential to induce the development of lens opacities. This has been demonstrated since long with animal experiments. Unfortunately these animal cataracts did not explain or elucidate the epidemiological observation that the frequency of human cataracts--such as the so called senile cataract--is remarkably higher in regions with increased cosmic UV irradiation or in the p...

The present study examines the developmental stages of the eye retina in Caspian kutum during the pre-hatch stage to end of the larval stage. Fertilized eggs of Caspian kutum were obtained from Shahid Ansari Center for Reproduction of teleost fish (Guilan province, Iran). Sampling was done for one month until the larval stage completed and the yolk sac completely depleted. Samples were studied ...

Journal: :European journal of paediatric dentistry : official journal of European Academy of Paediatric Dentistry 2006
G Matarese M Portelli M Mazza A Militi R Nucera E Gatto G Cordasco

AIM The authors evaluated radiation and skin doses absorbed by the eye lens, as well as the parotid and thyroid glands, during a low dose maxillary spiral computed tomography (CT). METHODS Three spiral CTs were carried out, one after the other, changing from time to time MAS, pitch factor, Kv and consequently, CTDI/Vol, until the minimum values detectable by the equipment were reached (MAS 28...

2014
Yuki Fujimichi Nobuyuki Hamada

Over the past century, ionizing radiation has been known to induce cataracts in the crystalline lens of the eye, but its mechanistic underpinnings remain incompletely understood. This study is the first to report the clonogenic survival of irradiated primary normal human lens epithelial cells and stimulation of its proliferation. Here we used two primary normal human cell strains: HLEC1 lens ep...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید