Publications by authors named "Savas H"

Background: Single-photon emission computed tomography (SPECT) analysis relies on qualitative visual assessment or semi-quantitative measures like total perfusion deficit that play a critical role in the non-invasive diagnosis of coronary artery disease by assessing regional blood flow abnormalities. Recently, machine learning (ML) -based analysis of SPECT images for coronary artery disease diagnosis has shown promise, with its utility in predicting long-term patient outcomes (prognosis) remaining an active area of investigation. In this review, we comprehensively examine the current landscape of ML-based analysis of SPECT imaging with an emphasis on prognostication of coronary artery disease.

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  • Mechanical ventilation is crucial in cardiac surgery ICUs for managing patients post-surgery, and the study aimed to develop and validate a scale to assess adherence to this treatment.
  • The research involved 222 patients and included interviews with nurses and expert feedback to create and refine a 36-item scale focused on mechanical ventilator compliance.
  • Results showed the scale is both reliable and valid, making it a useful tool for nurses in monitoring how well patients follow prescribed ventilation protocols in cardiac ICUs.*
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Purpose: There are limited data on prostate-specific membrane antigen (PSMA) positron emission tomography (PET)/CT for workup of recurrence after radical prostatectomy (RP) at low PSA values. We evaluated a PSMA PET/CT cohort of patients post RP, focusing on patients with PSA < 0.5 ng/mL.

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Introduction: Chronic urticaria requires well-defined treatment strategies in order to achieve a maximum treatment response and maintain the quality of life. Since 2014, omalizumab has been used in chronic urticaria. However, many studies showed that some patients are resistant to omalizumab.

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Objectives: This study aimed to evaluate serum biomarker values measured during second-trimester aneuploidy screening in terms of their predictive ability for the development of retinopathy of prematurity (ROP) in premature infants.

Methods: This retrospective cohort study evaluated the data of 1985 idiopathic premature infants who underwent ROP screening from 2016 to 2022. The infants were divided into two groups according to the presence of ROP, and those with ROP were further evaluated in two subgroups based on the presence of proliferation.

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Objectives: To examine the influence of hirudotherapy on parameters of oxidative stress.

Methods: The cross-sectional study was conducted from March 29 to September 29, 2021, at the Alanya Research and Training Hospital's Traditional and Complementary Medicine Application Centre, Turkey, and comprised adult volunteers of either gender. The participants were subjected to two sessions of hirudotherapy 4 weeks apart.

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Background: This study aimed to assess and compare the concentrations of growth factors, white blood cells (WBCs), and platelets in injectable platelet-rich fibrin (i-PRF) derived from people with healthy periodontal conditions and those with chronic periodontitis.

Methods: Venous blood samples were obtained from 30 patients diagnosed with chronic periodontitis (test group) and 30 participants with healthy periodontal conditions (control group). The i-PRF was then acquired from centrifuged blood.

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Introduction: The Society of Nuclear Medicine and Molecular Imaging (SNMMI) provides appropriate use criteria (AUC) for prostate-specific membrane antigen positron emission tomography/computed tomography (PSMA PET/CT) which include guidance on imaging in newly diagnosed prostate cancer and in patients with biochemically recurrent (BCR) disease. This study aims to examine trends in PSMA implementation and the prevalence and outcomes of scans ordered in scenarios deemed rarely appropriate or not meeting SNMMI AUC.

Methods: We retrospectively identified patients who were diagnosed with presumptive National Comprehensive Cancer Network unfavorable intermediate, high, or very high risk prostate cancer, patients who underwent staging for BCR, and all patients staged with PSMA between July 2021 and March 2023.

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Prostate-specific membrane antigen (PSMA)-targeted PET agents have revolutionized the care of patients with prostate cancer, supplanting traditional methods of imaging prostate cancer, and improving the selection and delivery of therapies. This has led to a rapid expansion in both the number of PSMA PET scans performed and the imaging specialists required to interpret those scans. To aid those imagers and clinicians who are new to the interpretation of PSMA PET, this review provides an overview of the interpretation of PSMA PET/CT imaging and pearls for overcoming commonly encountered pitfalls.

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Purpose The purpose of this study is the evaluation of serum biomarker and nuchal translucency (NT) values measured during first-trimester aneuploidy screening in terms of the development of retinopathy of prematurity (ROP) in premature infants and investigation of whether the development of ROP is associated with these parameters. Methods In this retrospective cohort study, 3,750 premature infants who underwent ROP screening from 2016 to 2021 were identified from the hospital medical record system. Among 2,130 premature babies screened for first-trimester aneuploidy, 166 babies whose mothers had single pregnancies were screened by the same method and showed the same clinical course in both eyes were included in the study.

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Article Synopsis
  • - The study evaluated how effective [F]Fluciclovine PET/CT scans are in restaging nonmetastatic castrate-resistant prostate cancer (nmCRPC) and their influence on patient management.
  • - Out of 35 patients, the scans detected lesions in 73% of cases, leading to a management change in 71% of those, with a notable 26.9% being classified as having oligometastatic disease.
  • - The results showed high accuracy for [F]Fluciclovine PET/CT with 86% sensitivity and 96.1% positive predictive value, suggesting it should be prioritized over conventional imaging methods for evaluating disease recurrence.
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Importance: To our knowledge, this is the first clinical trial designed to investigate concurrent treatment with a checkpoint inhibitor and conventional chemotherapy in relapsed or refractory classic Hodgkin lymphoma in patients destined for an autologous stem cell transplant.

Objective: To evaluate the complete response rate as assessed by 18F-fluorodeoxyglucose-positron emission tomography with computed tomography (FDG-PET/CT) after salvage therapy for patients with relapsed or refractory classic Hodgkin lymphoma.

Design, Setting, And Participants: A single-group, phase 2, multi-institutional nonrandomized clinical trial to evaluate the addition of pembrolizumab to ifosfamide, carboplatin, and etoposide (ICE) chemotherapy was conducted from April 20, 2017, to October 29, 2020, at 5 US sites.

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Background: The prevalence of allergic diseases is gradually increasing worldwide. The most common such allergic disease is allergic rhinitis (AR).

Objective: The present study investigated the possible relationship between seasonal AR and the thiol-disulfide balance and zinc and copper levels in adult individuals.

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Objectives: Vertigo and Dizziness are a common complaint among the reasons for applying to the ear nose throat clinic. Benign Paroxysmal Positional Vertigo (BPPV) is the most common cause of perpheric vertigo. Oxidative stress is caused by the formation of hydroxyl radicals, superoxide anions and hydrogen peroxide, which are reactive oxygen derivatives (ROS).

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Objective: This study aimed to evaluate the association between left ventricular ejection fraction recovery and the total oxidant status, total antioxidant capacity, and high-sensitivity C-reactive protein levels.

Methods: A total of 264 ST-elevation myocardial infarction patients were classified into two groups according to baseline and 6-month follow-up left ventricular systolic function: reduced and recovery systolic function. Predictors of the recovery of left ventricular ejection fraction were determined by multivariate regression analyses.

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  • The study addresses the variability in CT images from different scanners, which limits the effectiveness of radiomics in clinical applications by developing a radiomics data harmonization model.
  • Researchers analyzed radiomic features from untreated hepatic metastasis and used a mixed effects model to identify the influences of lesion size, tissue type, and scanner model.
  • The proposed harmonization model successfully minimized scanner-related variability, enhancing the performance of machine learning classification models, with significant improvements in sensitivity and overall accuracy.
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In a multicenter, phase 2, investigator-initiated trial of sequential pembrolizumab and AVD (doxorubicin, vinblastine, and dacarbazine), nearly two-thirds of patients with untreated, unfavorable, or advanced-stage classic Hodgkin lymphoma (cHL) achieved positron emission tomography (PET)-defined, complete or near-complete metabolic responses (CMRs), following pembrolizumab monotherapy. Furthermore, all patients achieved CMR after 2 cycles of AVD, with 100% of patients alive and without relapse at initial publication. We now report long-term follow-up, including the 3-year overall survival (OS) and planned correlative analyses.

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Several infections can predispose to certain malignancies in different body parts. These infections include viral, bacterial, and fungal pathogens. Imaging plays a vital role in the diagnosis, staging, and management of these neoplastic conditions.

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Background: Large vessel vasculitis (LVV) can be characterized based on symptom severity, and this characterization helps clinicians decide upon treatment approach. Our aim was to compare the imaging findings of combined modality positron emission tomography/magnetic resonance (PET/MR) and inflammatory markers between severe and non-severe LVV. A retrospective query was performed to identify all patients with LVV who underwent PET/MR at our institution between January 2015 and January 2021.

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Solid organ splenosis is a challenging diagnosis with many atypical imaging features that can overlap with neoplastic masses of the affected organ. We present a sporadic case of intrahepatic splenosis in a 68-year-old woman with transformation into a low-grade B cell lymphoma. Initial cross-sectional imaging suggested focal nodular hyperplasia (FNH) ruled out on contrast-enhanced Magnetic Resonance Imaging (MRI) using a hepatobiliary-specific contrast agent.

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Mantle cell lymphoma (MCL) is an aggressive, difficult to treat subtype of lymphoma, resulting in relapses and poor outcomes. Novel agents such as Bruton tyrosine kinase (BTK) inhibitors have been studied in the treatment of relapsed/refractory (R/R) MCL. BTK inhibitor ibrutinib, in particular, has demonstrated improvement in survival outcomes of R/R MCL.

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Background: During the COVID-19 pandemic, there were difficulties in planning the nursing workforce and personal protective equipment.

Aim: The purpose of this study was to identify the experiences and views of nurses on personal protective equipment use and nursing workforce planning in Turkey.

Methods: This descriptive and cross-sectional study was conducted between 23 December 2020 and 3 May 2021, among 362 nurses who agreed to participate in this study voluntarily.

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Genetic diversity, genetic structure, and demographic history of the endemic and endangered cyprinid species based on samples from 17 populations consisting of resident and potamodromous specimens from the Lake Van basin in eastern Turkey were analyzed using two mitochondrial DNA markers. populations in the Lake Van basin are genetically heterogeneous, as indicated by the high haplotype and low nucleotide diversity of 1233 bp of the 16S rRNA marker (44 haplotypes; 70 polymorphic sites, haploid diversity () = 0.9130, π = 0.

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Objective: To investigate the relationship between complaints and serum trace elements and oxidative stress levels in pediatric patients with allergic rhinitis (AR).

Study Design: Descriptive study.

Place And Duration Of Study: Department of Otolaryngorhinology, Medicine Faculty, Alanya Alaaddin Keykubat University, between May and September 2020.

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