Yazar "0000-0001-6908-3412" için Araştırma Çıktıları | TR-Dizin | WoS | Scopus | PubMed listeleme
-
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 ... -
Comparison of Involved Field Radiotherapy versus Elective Nodal Irradiation in Stage IIIB/C Non-Small-Cell Lung Carcinoma Patients Treated with Concurrent Chemoradiotherapy: A Propensity Score Matching Study
Topkan, Erkan; Ozdemir, Yurday; Guler, Ozan Cem; Kucuk, Ahmet; Besen, Ali Ayberk; Mertsoylu, Huseyin; Sezen, Duygu; Akdemir, Eyub Yasar; Sezer, Ahmet; Bolukbasi, Yasemin; Pehlivan, Berrin; Selek, Ugur (2020)Background. We retrospectively compared the incidence of isolated elective nodal failure (IENF) and toxicity rates and survival outcomes after elective nodal irradiation (ENI) versus involved-field RT (IFRT) by employing ... -
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 ... -
Definitive concurrent chemoradiotherapy outcomes in Stage IIIB nonsmall cell lung cancer patients younger than 45 years: A retrospective analysis of 145 patients
Topkan, Erkan; Guler, Ozan Cem; Ozdemir, Yurday (2020)Purpose: To assess the survival outcomes and prognostic factors of young (<= 45 years) Stage IIIB nonsmall cell lung cancer (NSCLC) patients treated with definitive concurrent chemoradiotherapy (C-CRT). Materials and ... -
Dosimetric Comparison of Sequential Versus Simultaneous-integrated Boost in Early-stage Breast Cancer Patients Treated With Breast-conserving Surgery
Onal, Cem; Efe, Esma; Guler, Ozan C.; Yildirim, Berna A. (2019)Background/Aim: To compare simultaneous-integrated boost (SIB) versus sequential-boost (SB) delivered in the context of whole-breast irradiation (WBI) via volumetric-modulated arc therapy (VMAT) and helical-tomotherapy ... -
Dosimetric Comparison of Simultaneous-Integrated BOOST and Sequential BOOST with VMAT or Helical Tomotherapy in Breast Cancer Patients after Breast-Conserving Surgery
Onal, C.; Efe, E.; Yildirim, B. Akkus; Guler, O. C. (2019) -
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 68GA-PSMA-tracer uptake in nonmetastatic prostate cancer patients
Cem, Onal; Guler, Ozan Cem; Torun, Nese; Reyhan, Mehmet; Yapar, Ali Fuat (2020) -
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 ... -
Estimation of secondary cancer risk after radiotherapy in high-risk prostate cancer patients with pelvic irradiation
Haciislamoglu, Emel; Gungor, Gorkem; Aydin, Gokhan; Canyilmaz, Emine; Guler, Ozan Cem; Zengin, Ahmet Yasar; Yenice, Kamil Mehmet (2020)We aimed to estimate the risk of secondary cancer after radiotherapy (RT) in high-risk prostate cancer (HRPC) patients with pelvic irradiation. Computed tomography data of five biopsy-proven HRPC patients were selected for ... -
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, ... -
The hematologic parameters in metastatic castration-resistant prostate cancer patients treated with abiraterone acetate
Onal, Cem; Sedef, Ali Murat; Kose, Fatih; Oymak, Ezgi; Guler, Ozan Cem; Sumbul, Ahmet Taner; Aksoy, Sercan; Yildirim, Berna Akkus; Besen, Ali Ayberk; Muallaoglu, Sadik; Mertsoylu, Huseyin; Ozyigit, Gokhan (2019)Currently, there are no predictive markers of response to abiraterone. We calculated neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) at baseline and at 4 and 12 weeks after initiation of ... -
The hematologic parameters in metastatic castration-resistant prostate cancer patients treated with abiraterone acetate.
Cem, Onal; Sedef, Ali Murat; Kose, Fatih; Oymak, Ezgi; Guler, Ozan Cem; Sumbul, Ahmet Taner; Aksoy, Sercan; Yildirim, Berna Akkus; Besen, Ali Ayberk; Mullaoglu, Sadik; Mertsoylu, Huseyin; Ozyigit, Gokhan (2019) -
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- ... -
Integration of 68Ga-PSMA-PET/CT in Radiotherapy Planning for Prostate Cancer Patients
Onal, Cem; Torun, Nese; Akyol, Fadil; Guler, Ozan Cem; Hurmuz, Pervin; Yildirim, Berna Akkus; Caglar, Meltem; Reyhan, Mehmet; Ozyigit, Gokhan (2019)Purpose To assess the role of (68)Gallium-labeled-prostate-specific membrane antigen PET/CT (Ga-68-PSMA-PET/CT) in risk group definition and radiotherapy planning in the initially planned definitive radiotherapy (RT) for ... -
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) -
Is there a correlation between Gleason score and maximum standardized uptake value in locally advanced prostate cancer patients?
Cem, Onal; Torun, Nese; Guler, Ozan Cem; Reyhan, Mehmet; Yildirim, Berna Akkus; Yapar, Ali Fuat (2019) -
Is there any benefit of paraaortic field irradiation in pelvic lymph node positive endometrial cancer patients? A propensity match analysis
Onal, Cem; Yuce Sari, Sezin; Akkus Yildirim, Berna; Gultekin, Melis; Guler, Ozan Cem; Yildiz, Ferah (2020)We evaluated the survival outcomes and recurrence patterns of endometrial cancer (EC) patients with pelvic lymph node metastases who received postoperative radiotherapy (RT) to the pelvis (P-RT) or to the pelvis plus ... -
Local control and vertebral compression fractures following stereotactic body radiotherapy for spine metastases
Ozdemir, Yurday; Torun, Nese; Guler, Ozan Cem; Yildirim, Berna Akkus; Besen, Ali A.; Yetisken, Aylin Gunesli; Onal, H. Cem; Topkan, Erkan (2019)Purpose: We aimed to retrospectively assess the incidence of vertebral compression fractures (VCF), examine clinicopathologic factors potentially associated with VCF, and evaluate treatment response in patients who received ...