Yazar "0000-0002-2742-9021" için Tıp Fakültesi / Faculty of Medicine listeleme
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Adjuvant Radiotherapy in Cervical Cancer Patients: TROD Gynecologic Group Study
Gultekin, M.; Esen, C. S. Beduk; Balci, B.; Alanyali, S.; Yildirim, B. Akkus; Ergen, S. A.; Sahinler, I.; Cetin, I. Alsan; Onal, C.; Yildiz, F.; Ozsaran, Z. (2020) -
Adjuvant Small Pelvic Radiotherapy in Patients with Cervical Cancer Having Intermediate Risk Factors Only - Is It Sufficient?
Onal, Huseyin Cem; Sari, Sezin Yuce; Guler, Ozan C.; Gultekin, Melis; Yildiz, Ferah (2017)Background: We sought to determine the outcomes of adjuvant small pelvic external beam radiotherapy (EBRT) and prognostic factors for survival and disease control. Patients and Methods: We retrospectively evaluated 113 ... -
Bone Only Oligometastatic Renal Cell Carcinoma Patients Treated with Stereotactic Body Radiotherapy: A Multi Institutional Study
Onal, Cem; Guler, Ozan Cem; Hurmuz, Pervin; Yavas, Guler; Tilki, Burak; Oymak, Ezgi; Yavas, Cagdas; Ozyigit, Gokhan (2022)Purpose This study aimed to analyze the prognostic factors associated with overall survival (OS) and progression-free survival (PFS) in patients with bone-only metastatic renal cell carcinoma (RCC) who have five or fewer ... -
Cardiac angiosarcoma treated with 1.5 Tesla MR-guided adaptive stereotactic body radiotherapy-Case report and review of the literature
Noyan, Asli; Yavas, Guler; Arslan, Gungor; Yavas, Cagdas; Onal, Cem (2022)Introduction: Cardiac angiosarcoma is a very rare disease. As a result of their nonspecific presentation symptoms, and the lack of consensus in treatment, caution should be taken in both diagnosis and treatment. The role ... -
Clinical characteristics of relapsed ovarian cancer patients with striking response to the bevacizumab at first relapse
Kose, Fatih; Alemdaroglu, Songul; Mertsoylu, Huseyin; Besen, Ali Ayberk; Guler, Ozan Cem; Simsek, Seda Yuksel; Erbay, Gurcan; Onal, Cem; Celik, Husnu (2020)Background: Ovarian cancer is fifth leading cause of the cancer related death in women. Platin based doublet regimen plus bevacizumab is standard treatment in relapse. The primary aim of this study is to define clinicopathological ... -
Clinical parameters and nomograms for predicting lymph node metastasis detected with Ga-68-PSMA-PET/CT in prostate cancer patients candidate to definitive radiotherapy
Onal, Cem; Ozyigit, Gokhan; Oymak, Ezgi; Guler, Ozan Cem; Hurmuz, Pervin; Tilki, Burak; Reyhan, Mehmet; Tuncel, Murat; Akyol, Fadil (2021)Background Defining the extent of disease spread with imaging modalities is crucial for therapeutic decision-making and definition of treatment. This study aimed to investigate whether clinical parameters and nomograms ... -
Concurrent versus sandwich treatment in adjuvant treatment in high risk operated gastric cancer: A single center experience
Sezer, Ahmet; Akkus, Berna; Guler, Ozan Cem; Onal, Huseyin Cem; Sumbul, Ahmet Taner (2020)Purpose: In this study we compared postoperative early vs sandwich chemoradiotherapy in operated stage IIA-IIIC gastric cancer patients in terms of effectiveness and outcome. Methods: The data of 201 gastric cancer ... -
Daily Workflow and Workload of Radiation Oncology Specialists in Turkey
Akman, Fadime; Kamer, Serra; Onal, Cem; Agaoglu, Fulya; Guney, Yildiz; Hicsonmez, Ayse; Koc, Mehmet; Colpan Oksuz, Didem; Ozyigit, Gokhan; Ozkok, Serdar (2015)OBJECTIVES This study aimed to research the effort required by patient evaluation, radiotherapy planning and treatment processes in the daily applications of radiation oncology in terms of time, and to use this effort ... -
Dosimetric Analysis of Testicular Doses in Prostate Intensity-Modulated and Volumetric-Modulated Arc Radiation Therapy at Different Energy Levels
Onal, Cem; ArsIan, Gungor; Dolek, Yemliha; Efe, Esma (2016)The aim of this study is to evaluate the incidental testicular doses during prostate radiation therapy with intensity-modulated radiotherapy (IMRT) and volumetric-modulated arc radiotherapy (VMAT) at different energies. ... -
Dosimetric comparison of vaginal vault brachytherapy vs applicator-guided stereotactic body radiotherapy with volumetric modulated arc therapy and helical tomotherapy for endometrium cancer patients
Yildirim, Berna Akkus; Dolek, Yemliha; Guler, Ozan Cem; Arslan, Gungor; Onal, Cem (2019)We performed this dosimetric study to compare a nonstandard volumetric modulated arc therapy (VMAT) and helical tomotherapy (HT) techniques with high-dose rate (HDR) brachytherapy (BRT) plan of vaginal vault in patients ... -
The effect of androgen deprivation therapy on Ga-68-PSMA tracer uptake in non-metastatic prostate cancer patients
Onal, Cem; Guler, Ozan Cem; Torun, Nese; Reyhan, Mehmet; Yapar, Ali Fuat (2020)Purpose To evaluate the effect of neoadjuvant androgen deprivation treatment (ADT) on prostate-specific membrane antigen (PSMA) tracer uptake demonstrated in Ga-68-PSMA-positron emission tomography (PET/CT) in non-metastatic ... -
Effects of vaginal cylinder position on dose distribution in patients with endometrial carcinoma in treatment of vaginal cuff brachytherapy
Ozdemir, Yurday; Dolek, Yemliha; Onal, Cem (2017)Purpose: To investigate the impact of different cylinder positions on dosimetry of critical structures in patients with endometrial carcinoma undergoing three-dimensional image-based vaginal cuff brachytherapy (VCB). Material ... -
Half-dose bevacizumab experience in relapsed ovarian cancer patients in Turkey due to formal regulations: similar effectiveness with lower rate of hypertension
Kose, Fatih; Alemdaroglu, Songul; Mertsoylu, Huseyin; Besen, Ali Ayberk; Guler, Ozan Cem; Simsek, Seda Yuksel; Erbay, Gurcan; Onal, Cem; Celik, Husnu (2020)Purpose: Ovarian cancer is the fifth leading cause of cancer related death in women. Platin-based doublet regimens plus bevacizumab is standard treatment in relapse. Due to formal regulation of Turkish Ministry of Health, ... -
Hypofractionated Radiation Therapy (HFRT) of Breast/Chest Wall and Regional Nodes in Locally Advanced Breast Cancer: Toxicity Profile and Survival Outcomes in Retrospective Mono-Institutional Study: In Regard to De Matteis et al
Bolukbasi, Yasemin; Oymak, Ezgi; Sezen, Duygu; Onal, Cem (2022) -
Impact of lymph node ratio in patients with stage IIIC endometrial carcinoma treated with postoperative radiotherapy
Onal, Cem; Sari, Sezin Yuce; Yavas, Guler; Guler, Ozan Cem; Yiğit, Ecem; Oymak, Ezgi; Gultekin, Melis; Yildiz, Ferah (2021)Aim: To evaluate the prognostic value of the lymph node ratio (LNR) and other clinicopathological factors in patients with stage IIIC endometrial cancer. Methods: Factors affecting overall survival (OS) and progression-free ... -
The Impact of Stereotactic Radiotherapy to Metastatic Site on Systemic Treatment Decision in Oligometastatic Breast Cancer Patients
Besen, Ali Ayberk; Mertsoylu, Huseyin; Kose, Fatih; Vildirim, Berna; Gozel, Sedat; Sedef, Ali Murat; Ucar, Aysenur; Onal, Cem (2017) -
The Impact of Tumor Volume in Breast Cancer Liver Metastasis Patients Treated with Stereotactic Radiotherapy - Does Size Matter?
Guler, O. C.; Yildirim, B. Akkus; Onal, C. (2020) -
Incidental testicular doses during volumetric-modulated arc radiotherapy in prostate cancer patients
Onal, Cem; Bozca, Recep; Dolek, Yemliha; Guler, Ozan Cem; Arslan, Gungor (2020)Purpose To compare the incidental testicular doses during volumetric-modulated arc therapy (VMAT) in patients receiving prostate-only and pelvic lymphatic irradiation. Materials and methods Testicular doses in 40 intermediate- ... -
Interpreting Clinical Parameters and Nomograms for Predicting Lymph Node Metastasis Detected with 68 Ga-PSMAPET/CT in prostate cancer patients
Onal, C.; Ozyigit, G.; Oymak, E.; Guler, O.C.; Hurmuz, P.; Tilki, B.; Torun, N.; Tuncel, M.; Reyhan, M.; Caglar, M.; Yapar, A.F.; Akyol, F. (2020)