Yazar "Çağlar, Mustafa" için listeleme
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The analysis of different diagonal profiles Used for commissioning in eclipse
Mabhouti, H.; Acar, Hilal; Küçük, Nadir; Küçükmorkoç, Esra; Doyuran, Mine; Çağlar, Mustafa; Altınok, Ayşe; Cebe, Mehmet; Yıldır, G.; Çağlar, Hale Başak (American Association of Physicists in Medicine, 2015)Purpose: The effect of diagonal profiles measured with different types of detectors to the improvement of the quality of the algorithm configuration is analysed. Methods: For commissioning of Truebeam STx machine, Eclipse ... -
The analysis of different percentage depth dose curves used for commissioning in eclipse
Cebe, Mehmet; Acar, Hilal; Küçük, Nadir; Küçükmorkoç, Esra; Doyuran, Mine; Çağlar, Mustafa; Altınok, Ayşe; Yilidir, G.; Mabhouti, H.; Çağlar, Hale (Wiley, 2015)Purpose: Percentage Depth Doses (PDDs) used for balance fitting of the calculation model in Eclipse. The effect of PDD curves measured with two different detectors for the commissioning of Truebeam STx machine to the ... -
Availability of water glass/Bi2O3 composites in dielectric and gamma-ray screening applications
Demirbay, Tuğba; Çağlar, Mustafa; Karabul, Yaşar; Kılıç, Mehmet; İçelli, Orhan; Güven Özdemir, Zeynep (Taylor and Francis Inc., 2019)Sodium silicate (Na2Si3O7) also known as water glass is a very low cost material which is used in many industrial applications such as a builder in detergents, as a binder and adhesive etc. But so far the electrical ... -
Boost volume assessment in breast cancer: Preop tumor volume vs clips used in oncoplastic surgery
Altınok, Ayşe Yıldrım; Doyuran, Mine; Çağlar, Mustafa; Canoğlu, Doğu; Küçükmorkoç, Esra; Acar, Hilal; Küçük, Nadir; Çağlar, Hale Başak (Elsevier Ireland Ltd, 2016)The aim of this study was to compare the volumes obtained with surgical clips during breast conserving surgery of breast cancer patients with volume determined using FDG positive tumor volumes outlined ... -
BXCOM: A software for computation of radiation sensing
Eyecioğlu, Önder; El-Khayatt, Ahmed Mahmoud; Karabul, Yaşar; Çağlar, Mustafa; Toker, Ozan; İçelli, Orhan (Taylor & Francis Ltd, 2019)The main objective of this work is to develop user-friendly software, called BXCOM, for computation of the exposure build-up factor (EBF) and the energy absorption build-up factor (EABF), using geometric progression (G-P) ... -
Determination of Se, Cr, Mn, Zn, Co, Na, and K in blood samples of breast cancer patients to investigate their variation using ICP-MS and ICP-OES
Toker, Ozan; Topdağı, Ömer; Bakirdere, Sezgin; Bursalıoğlu, Ertuğrul Osman; Öz, Ersoy; Eyecioğlu, Önder; Karabul, Yaşar; Çağlar, Mustafa; İçelli, Orhan (Perkin - Elmer Corp., 2019)The aim of this study was to investigate the concentration changes of Se, Mn, Cr, Zn, Co, Na and K in blood samples of breast cancer patients. Determination of the elements was performed using ICP-MS and ICP-OES instruments. ... -
Dielectric and gamma shielding properties of sodium silicate glassy structure modified with tungsten
Kılıç, Mehmet; Çağlar, Mustafa; Karabul, Yaşar; Güven Özdemir, Zeynep; İçelli, Orhan (Taylor & Francis Ltd, 2019)In this study, (x)%Na2Si3O7/(100 - x)%W glassy structured composites where x = 100, 25 and 60 were prepared for the investigation of their dielectric and gamma-ray shielding properties for the first time. The surface ... -
Does preoperative positron emission tomography help delineate the boost volume after oncoplastic surgery for breast cancer?
Yıldırım Altınok, Ayşe; Doyuran, Mine; Çağlar, Mustafa; Çakır, Tansel; Acar, Hilal; Küçükmorkoç, Esra; Küçük, Nadir; Çağlar, Hale; Atasever, Tamer (Kare Publishing, 2017)OBJECTIVE The tumor bed within the breast shifts during oncoplastic surgery (OPS) for breast cancer (BC). Preoperative imagery is used to determine the boost volume (BV) for patients not implanted with surgical clips. This ... -
Dosimetric evaluation of right coronary artery in radiotherapy for breast cancer
Yıldırım Altınok, Ayşe; Askeroğlu, Orbay; Doyuran, Mine; Çağlar, Mustafa; Cantürk, Emir; Erol, Cengiz; Şenel Beşe, Nuran (Elsevier Inc., 2019)Comparison with control groups of untreated patients suggests that right-breast-cancer patients who receive radiotherapy have a higher rate of heart disease. Dose constraint for heart has been established to minimize ... -
The effect of depth and control point number for MLC transmission and dosimetric leaf gap
Küçükmorkoç, Esra; Doyuran, Mine; Çağlar, Mustafa; Küçük, Nadir; Acar, Hilal; Altınok, Ayşe; Çağlar, Hale (Elsevier Ireland Ltd., 2015)Purpose/Objective: MLC transmision (MLCT) and dosimetric leaf gap (DLG) in Treatment Planning System (TPS) are important parameters for dose calculation and they provide accuracy of delivering IMRT plans. MLCT and DLG ... -
The effect of dose enhancement in tumor with silver nanoparticles on surrounding healthy tissues: A monte carlo study
Çağlar, Mustafa; Eşitmez, Dursun; Cebe, Mehmet Sıddık (SAGE Publications Inc., 2024)Objectives: Cancer-related death rates account for approximately one-third of all deaths, and this rate is increasing remarkably every year. In this study, we examined the dose enhancement factor (DEF) in the tumor and ... -
Experimental validaton of peripheral dose distribution of electron beams for eclipse electron Monte Carlo algorithm
Acar, Hilal; Çağlar, Mustafa; Yıldırım Altınok, Ayşe (Cambridge University Press, 2018)Aim: The accuracy of two calculation algorithms of the Varian Eclipse treatment planning system (TPS), the electron Monte Carlo algorithm (eMC) and General Gaussian pencil beam algorithm (GGPB) for calculating peripheral ... -
An investigation on gamma-ray shielding properties of quaternary glassy composite (Na2Si3O7/Bi2O3/B2O3/Sb2O3) by BXCOM and MCNP 6.2 code
Akçalı, Özgür; Çağlar, Mustafa; Toker, Ozan; Bilmez, Bayram; Kavanoz, Hüseyin Birtan; İçelli, Orhan (Pergamon-Elsevier Science Ltd, 2020)Analytic and stochastic methods were proposed for the determination of gamma-ray radiation shielding properties of the glassy composites. Radiation shielding properties such as mass attenuation coefficients, effective ... -
Na2Si3O7/Ag micro and nano-structured glassy composites: The experimental and MCNP simulation surveys of their radiation shielding performances
Çağlar, Mustafa; Karabul, Yaşar; Kılıç, Mehmet; Güven Özdemir, Zeynep; İçelli, Orhan (Elsevier Ltd, 2021)In the present work, the very low-cost glassy structured sodium silicate (Na2Si3O7) matrix has been reinforced with micro-and nano-sized silver (Ag) particles in different weight percentages. The ionizing radiation shielding ... -
Na2Si3O7/BaO composites for the gamma-ray shielding in medical applications: Experimental, MCNP5, and WinXCom studies
Çağlar, Mustafa; Kayacık, Hande; Karabul, Yaşar; Kılıç, Mehmet; Güven Özdemir, Zeynep; İçelli, Orhan (Pergamon-Elsevier Science Ltd, 2019)The role of BaO in the glassy structured Na2Si3O7 was investigated in the context of gamma radiations shielding parameters in the study. The mass attenuation coefficient, half layer value, and mean free path of the ... -
A novel comprehensive utilization of vanadium slag/epoxy resin/antimony trioxide ternary composite as gamma ray shielding material by MCNP 6.2 and BXCOM
Kavanoz, Hüseyin Birtan; Akçalı, Özgür; Toker, Ozan; Bilmez, Bayram; Çağlar, Mustafa; İçelli, Orhan (Elsevier, 2019)New research on composite materials was proposed for both gamma ray shielding and fireproofing. When compared to concrete, composite materials show up higher shielding properties in the 0.015 MeV–15 MeV incident energy ... -
Radiation interaction parameters for blood samples of breast cancer patients: an MCNP study
Toker, Ozan; Çağlar, Mustafa; Öz, Ersoy; Bakirdere, Sezgim; Topdağı, Ömer; Eyecioğlu, Önder; İçelli, Orhan (Springer, 2019)The main goal of this study was to determine radiation interaction parameters such as mass attenuation coefficients, effective atomic numbers, and effective electron densities depending on element concentrations (Na, K, ... -
Right coroner artery assessment in radiotherapy of breast cancer
Altınok Yıldırım, Ayşe; Askeroğlu, Orbay; Çağlar, Mustafa; Doyuran, Mine; Cantürk, Emir; Erol, Cengiz; Beşe, Nuran (Elsevier Ireland Ltd, 2017)The risk of developing coronary ischemic heart disease and the radiation doses to heart and left anterior descending coronary artery (LAD) have been very well documented in breast cancer patients who underwent radiotherapy ... -
X-ray irradiated LDPE/PP blends with high mechanical and dielectric performance
Alkan, Ümit; Kılıç, Mehmet; Karabul, Yaşar; Çağlar, Mustafa; İçelli, Orhan; Güven Özdemir, Zeynep (Wiley, 2018)In this study, the influences of polypropylene (PP) additive (varying from 20% to 80% wt) and low dose X-ray irradiation (changing from 25 to 100 Gy) on the mechanical and dielectric properties of low-density polyethylene ...