یکی از روش های تعیین مقدار دز جذبی اندام ها، استفاده از فانتوم های فیزیکی مناسب می باشد، که تا حد امکان مشخصات بدن انسان را داشته داشته باشند و بتوانند رفتار واقعی پرتو در بدن را شبیه سازی کنند. در این پژوهش، نحوه انتخاب ...

In computed tomography (CT), some superficial organs which have increased sensitivity to radiation, receive doses that are significant enough to be matter of concern. Therefore, in this study, the effects of using shields ...

The global increase in the number of computed tomography (CT) examinations have enhanced concerns

regarding stochastic radiation risks to patients, especially for children. Considering that cancer risk is cumulative ...

This paper reports on the methodology applied to select suitable tissue equivalent materials of an 8-year

phantom for use in computed tomography (CT) examinations.To find the appropriate tissue substitutes,

first ...

In order to establish an organ and effective dose database for Iranian children undergoing computed tomography (CT) examinations, in the first step, two Iranian 11-year-old phantoms were constructed from image series ...

In order to construct a library of Iranian pediatric voxel phantoms for radiological protection and dosimetry applications, an Iranian eight-year-old phantom was constructed from a series of CT images. Organ and effective ...

فانتومهای فیزیکی انسان در مطالعات دزسنجی و تضمین کیفیت وسایل پزشکی اهمیت بسزایی دارند. بنابراین مواد معادل بافت استفاده شده در این فانتومها باید تا حد امکان خصوصیات فیزیکی مشابه با بدن انسان داشته باشند. ویژگیهای شاخص در ...

Physical anthropomorphic phantoms have an important role in radiation dosimetry studies and quality assurance of medical imaging. Therefore, the phantoms\\' equivalent materials should have the same physical properties as ...

CT is a major source of medical radiation and its availability is responsible for increasing dose from CT practice. The breast tissue is one of the the structures that has an increased sensitivity to radiation and its ...

یکی از روش های اندازه گیری شار نوترون حرارتی، استفاده از فعالسازی پولک های فلزی می باشد. در این مقاله از دو پولک ایندیوم با ضخامت cm 112/0 برای گیراندازی نوترون استفاده شده است. گاماهای گسیل شده از پولک ایندیوم با آشکارساز ...