بررسی اولیه طراحی و ساخت مولد 90Sr/ 90Y برای مقاصد پزشکی هسته‌ای

90Sr-90Y biokinetics at incorporation determine the radiation burden to bone marrow.

The decay characteristics of 90Sr-90Y ensure that the mother and daughter nuclides exist in radioactive equilibrium, unless they get discriminated on the basis of their chemical properties, as it happens during metabolism. Although bone is the ultimate organ of deposition, the two nuclides arrive at this target organ over different biokinetic pathways. As 90Y is not excreted, it goes through tr...

Rapid 90Sr/90Y determination in water samples using a sequential injection method

We have developed a semiautomatic procedure based on a sequential injection method for 90Sr/90Y determination that allows their radiochemical separation in about 30 min. The method has been tested using 90Sr/90Y solutions with activities lower than 12 Bq. The source is eluted in a pH = 6.5 medium through a MnO2-impregnated cotton filter, where 9OY is preconcentrated in preference by adsorption....

Time optimization of 90Sr determinations: sequential measurement of multiple samples during decay of 90Y

This work presents an optimized method for the determination of multiple samples containing 90Sr when its daughter 90Y is measured after chemical separation and in sequence, i.e. during its decay. Consequently the measurement times will increase for each subsequent sample, since there has been a longer time for decay before measurement. Compared to a previously published approach, when 90Y is m...

Inhibitory effects of 90Sr/90Y β-irradiation on alkali burn-induced corneal neovascularization in rats

The aim of the present study was to investigate the inhibitory effects of 90Sr-90Y β-irradiation in a rat model of alkali burn-induced corneal neovascularization (CNV). Alkali burn-induced CNV was induced in the right eyes of 30 female Wistar rats, which were randomly divided into the following three groups (n=10/group): i) The alkali burn control group, which received a balanced salt solution ...

Performance of different materials as TSEE dosimeters in 90Sr+90Y radiation fields

بررسی، تحلیل و شبیه‌سازی تکفام‌سازی طیف انرژی بتای گسیلی از چشمه 90Sr/90Y با استفاده از میدان مغناطیسی یک حلقه

در این تحقیق، چشمه بتازای 90Sr/90Y مورد بررسی قرار گرفته است که چگونه می‌توان با استفاده از میدان مغناطیسی حاصل از یک حلقه حامل جریان، آن را تکفام نمود. سپس با توجه به انحراف الکترون در میدان مغناطیسی، طیف انرژی خروجی از پنجره خروجی حلقه حامل جریان، با استفاده از کد شبیه‌ساز مونت‌کارلو MCNP به دست آمده است. در این تحقیق، چشمه بتازای 90Sr/90Y مورد بررسی قرار گرفته است که چگونه می‌توان با استفاده...