Yazar "Acar, Hilal" 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 ... -
Bolus effect of immobilization mask during CyberKnife treatment
Acar, Hilal; Yazıcı, Ömer; Ünal, Dilek (Springer, 2023)PurposeTo investigate the effect of thermoplastic masks on the surface dose of CyberKnife (CK) treatment.MethodsThe head of RANDO phantom was used to measure the percentage increase in the surface dose using two different ... -
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 ... -
Deformable MRI fusion for intracranial SRS: Can we trust?
Çağlar, Hale; Küçükmorkoç, Esra; Küçük, Nadir; Altınok, Ayşe; Acar, Hilal; Doyuran, Mine (Elsevier İreland Ltd., 2015)Purpose/Objective: The aim of this study is to evaluate the reliability of MRI fusion for the determination of target volume when performing CT based intracranial stereotactic radiosurgery. Materials and Methods: Patients ... -
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 comparison of dose distributions in episcleral plaque brachytherapy
Acar, Hilal; Ozbay, Imre (Elsevier İreland Ltd., 2015)Purpose/Objective: Brachytherapy of intraocular tumors with 125I eye plaques has become a successful treatment modality and a viable alternat ive to enucleation. Plaque Simulator (PS) is an eye plaque treatment planning ... -
Dosimetric comparison of linac-based modulated techniques for hippocampal sparing whole brain radiotherapy
Acar, Hilal; Altınok Yıldırım, Ayşe; Doyuran, Mine (Springer Heidelberg, 2020)Objective Intensity modulated radiotherapy (IMRT) and volumetric modulated arc therapy (VMAT) techniques were compared in terms of their dosimetric quality, treatment efficiency, and delivery accuracy for hippocampal sparing ... -
Dosimetric comparison of robotic- and LINAC-based treatment of spine stereotactic body radiotherapy
Acar, Hilal; Yazıcı, Ömer; Ünal, Dilek (Elsevier Inc., 2022)To determine which treatment technique and modality would offer better dosimetric results and be preferable for spinal stereotactic body therapy (SBRT) depending on the three different regions of the vertebrae. Linear ... -
Dosimetric comparison of two different whole brain radiotherapy techniques in patients with brain metastases: How to decrease lens dose?
Yavaş, Güler; Yavaş, Çağdaş; Gül, Osman Vefa; Acar, Hilal; Ata, Özlem (International Journal of Radiation Research, 2014)Background: Palliative whole brain radiotherapy (WBRT) has been the standard treatment for brain metastases. Ionizing radiation is known to be one of the most potent cataractogenic agents. We aimed to evaluate two different ... -
Dosimetric evaluation of the dose calculation accuracy of different algorithms for two different treatment techniques during whole breast irradiation
Acar, Hilal; Yıldırım Altınok, Ayşe; Cebe, Mehmet Sıddık (Springer, 2019)Objective In-field, partially in-field, and out-of-field organ doses calculated by the Acuros XB (AXB) and analytical anisotropic algorithm (AAA) were compared with experimentally measured data for two different techniques ... -
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 thermoplatic mask to the surface dose in sterotactic brain treatments with flattening filter free beams with ebt3 gafchromic film and osl dosimeter
Yılıdır, G.; Acar, Hilal; Küçük, Nadir; Küçükmorkoç, Esra; Doyuran, Mine; Çağlar, Mete; Yıldırım Altınok, Ayşe; Cebe, Mehmet Ata; Mabhouti, H.; Çağlar, Hale Başak (American Association of Physicists in Medicine, 2015)AbstractPurpose:The surface dose of flattening filter free beams is higher than conventional flattening filter beams. In this study, The effect of thermoplatic mask to the surface dose in sterotactic brain treatments was ... -
Evaluation of interfractional bladder doses for two different patient positioning methods in prostate cancer
Altınok, Ayşe; Acar, Hilal; Rzazade, Rashad; Küçük, Nadir; Küçükmorkoç, Esra; Doyuran, Mine; Mabhouti, H.; Çağlar, Hale Başak (Elsevier Ireland Ltd., 2015)Purpose/Objective: MR imaging following needle implantation in high dose rate brachytherapy (HDR BT) provide more anatomical details for improved definition of the prostate gland, organs at risk, and needles. The purpose ... -
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 ... -
Investigation of the accuracy of different lung SBRT plans created in eclipse treatment planning system
Yıldırım, Sami; Cebe, Mehmet Ata; Mabhouti, H.; Paçacı, P.; Serin, Elise A. R.; Şanlı, Elif; Eşitmez, Dursun; Küçük, Nadir; Doyuran, Mina; Küçükmorkoç, Esra; Çağlar, Mete; Canoğlu, Doğu; Rzazade, Rashad; Acar, Hilal; Özkök, H. Çağlar (Wiley, 2017)… -
Investigation of the accuracy of different lung SBRT plans created in multiplan treatment planning system
Cebe, Mehmet Ata; Mabhouti, H.; Pacaci, P.; Serin, L.; Şanlı,Elif; Yıldırım, Sami; Eşitmez, Dursun; Küçük, Nadir; Doyuran, Mine; Küçükmorkoç, Esra; Çağlar, Mete; Canoğlu, Doğu; Rzazade, Rashad; Acar, Hilal; Özkök, H. Çağlar (Wiley, 2017)... -
Meme kanseri tanısı ile göğüs duvarına radyoterapi uygulanan hastalarda iki farklı tekniğin karşılaştırılması
Yavaş, Çağdaş; Yavaş, Güler; Acar, Hilal; Ata, Özlem (Selçuk Üniversitesi Tıp Fakültesi, 2014)Amaç: Meme kanseri tanısı ile mastektomi olan hastaların tedavi planlamasında kullanılan alan içi alan (FIF) ve 3-boyutlu konformal radyoterapi (3B-KRT) tekniklerinin dozimetrik karşılaştırılması yapıldı. Gereç ve yöntemler: ... -
Repeat CT imaging and adaptive planning during radiotherapy for locally advanced lung cancer
Küçükmorkoç, Esra; Acar, Hilal; Yıldırım Altınok, Ayşe; Sertkaya, Helin; Omurca, A.; Aydemir, Selcen; Çağlar, Hale (Elsevier Ireland Ltd, 2014)Purpose/Objective: Many patients with lung cancer have tumor changes like shrinkage, improvement in atelectasis or mediastinal replacement during radiotherapy. The aim of this study was to determine the dosimetric effects ...