Introduction: Brachytherapy is one type of internal radiation therapy where radiation sources, which are usually encapsulated, are placed as close as possible to the tumor site or inside the patient's body. In this technique, it is important to determine dose distribution around the brachytherapy capsule to create optimal treatment plant. In this way, dosimetric parameters are...

introduction: the use of low energy isotopes such as  103 pd in brachytherapy for the treatment of cancers  such as prostate, eye, head, neck, breast and cervix is increasing. in this regard, different models of pd- 103  seeds  have  been  designed  and  manufactured  at  the  agricultural,  medical  and  industrial  research  school (amirs) of atomic energy organization of iran. in this resear...

background: iodine brachytherapy sources with low photon energies have been widely used in treating cancerous tumors. dosimetric parameters of brachytherapy sources should be determined according to aapm tg-43u1 recommendations before clinical use. monte carlo codes are reliable tools in calculation of these parameters for brachytherapy sources. materials and methods: dosimetric parameters (dos...

PURPOSE The purpose of this study is to obtain the dosimetric parameters of the new BEBIG (60)Co brachytherapy source following by TG-43U1 recommendation with appropriate electron cutoff energy (0.521 MeV). MATERIAL AND METHODS The new BEBIG (60)Co brachytherapy source is used to calculate the TG-43U1 parameters. EGSnrc-based Monte Carlo simulation code has been used to calculate the radial d...

هدف: در عصر حاضر دستیابی به توسعه از مهمترین اهداف هر کشور است که نظام اداری مهم‌ترین رکن پیاده‌کننده سیاست‌های توسعه‌ای است. علاوه بر این وظیفه ارائه خدمت شهروندان را نیز عهده دارد و اگر متناسب با نیازهای طراحی نشده توان اجرای صحیح سیاست‌ها نداشته باشد، واقع هیچ یک وظایف خود عمل نکرده هزینه‌های آن بیش منافعش خواهد بود. رو موضوع تحول دستور کار بسیاری کشورها قرار گرفته تا بتوانند نظامی مطلوب برا...

i) The institutional affiliation for co-author Manzoor Hussain is missing. The affiliation of Manzoor Hussain is University of the Punjab, Department of Physics, Jinnah Campus, Lahore, Pakistan. With this correction, the institutional affiliations of all the authors will be as follows: Shahid B. Awan,a,b Sharifeh A. Dinib, Manzoor Hussaina, David Soleimani-Meigoonib, and Ali S. Meigoonib Univer...

conclusions according to the results, the old dosimetry formalisms, overestimate the dose especially towards the applicator’s tip. while the tg-43u1 based software perform the calculations more accurately. results for a typical arrangement of 10 active pellets in the applicator, the percentage difference between doses obtained by the new algorithm at 1cm distance from the tip of the applicator ...