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  1. Book ; Online ; E-Book: Medical imaging contrast agents

    Erturk, Sukru Mehmet

    a clinical manual

    2021  

    Author's details Sukru Mehmet Erturk [and three others], editors
    Keywords Diagnostic imaging ; Radiografia mèdica ; Diagnòstic per la imatge
    Subject code 616.0754
    Language English
    Size 1 online resource (303 pages)
    Publisher Springer
    Publishing place Cham, Switzerland
    Document type Book ; Online ; E-Book
    Remark Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
    ISBN 3-030-79256-0 ; 3-030-79255-2 ; 978-3-030-79256-5 ; 978-3-030-79255-8
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

    Full text online

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  2. Article ; Online: CT of Coronavirus Disease (COVID-19) Pneumonia: A Reference Standard Is Needed.

    Erturk, Sukru Mehmet

    AJR. American journal of roentgenology

    2020  Volume 215, Issue 1, Page(s) W20

    MeSH term(s) Betacoronavirus ; COVID-19 ; Coronavirus ; Coronavirus Infections ; Humans ; Pandemics ; Pneumonia, Viral ; SARS-CoV-2 ; Tomography, X-Ray Computed
    Keywords covid19
    Language English
    Publishing date 2020-04-17
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 82076-3
    ISSN 1546-3141 ; 0361-803X ; 0092-5381
    ISSN (online) 1546-3141
    ISSN 0361-803X ; 0092-5381
    DOI 10.2214/AJR.20.23286
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Ue I Zs.57: Show issues Location:
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  3. Article ; Online: CT Is Not a Screening Tool for Coronavirus Disease (COVID-19) Pneumonia.

    Erturk, Sukru Mehmet

    AJR. American journal of roentgenology

    2020  Volume 215, Issue 1, Page(s) W11

    MeSH term(s) Betacoronavirus ; COVID-19 ; Coronavirus ; Coronavirus Infections ; Humans ; Pandemics ; Pneumonia, Viral ; SARS-CoV-2 ; Tomography, X-Ray Computed
    Keywords covid19
    Language English
    Publishing date 2020-04-14
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 82076-3
    ISSN 1546-3141 ; 0361-803X ; 0092-5381
    ISSN (online) 1546-3141
    ISSN 0361-803X ; 0092-5381
    DOI 10.2214/AJR.20.23220
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Ue I Zs.57: Show issues Location:
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  6. Article: State-of-the-art Prostate Imaging.

    Ayyildiz, Hakan / Salmaslioglu, Artur / Tunaci, Atadan / Erturk, Sukru Mehmet

    Sisli Etfal Hastanesi tip bulteni

    2023  Volume 57, Issue 2, Page(s) 153–162

    Abstract: Prostate cancer is one of the most common cancers in men. In addition to methods such as prostate-specific antigen test, digital rectal examination, and transrectal ultrasonography, magnetic resonance imaging has an important role for accurate and ... ...

    Abstract Prostate cancer is one of the most common cancers in men. In addition to methods such as prostate-specific antigen test, digital rectal examination, and transrectal ultrasonography, magnetic resonance imaging has an important role for accurate and reproducible diagnosis. However, guidance in targeted biopsies and recent use in determining localization for treatment increase its importance. Due to technical difficulties, patient tolerance, and differences in interpretation, the prostate imaging reporting and data system recommends preparations for the patient and magnetic resonance imaging techniques. However, techniques continue to be developed to improve the diagnosis rate and image quality. In our article, patient preparation before imaging and techniques were tried to be discussed in detail. In addition, current approaches in biparametric magnetic resonance imaging and radiomics and new techniques such as T1 and T2 mapping will be mentioned.
    Language English
    Publishing date 2023-06-20
    Publishing country Turkey
    Document type Journal Article ; Review
    ZDB-ID 3026862-X
    ISSN 1308-5123 ; 1302-7123
    ISSN (online) 1308-5123
    ISSN 1302-7123
    DOI 10.14744/SEMB.2023.77910
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: The Significance of Preoperative Computed Tomography Features in the Prediction of Overall Survival in Gastric Cancer: A Retrospective Analysis.

    Yirgin, Inci Kizildag / Dogan, Izzet / Vatansever, Sezai / Erturk, Sukru Mehmet

    Sisli Etfal Hastanesi tip bulteni

    2023  Volume 57, Issue 2, Page(s) 195–203

    Abstract: Objectives: Computed tomography (CT) is a frequently used modality for staging in the preoperative evaluation of gastric cancer (GC). Our aim was to interpret the importance of preoperative CT features in predicting overall survival (OS) in patients ... ...

    Abstract Objectives: Computed tomography (CT) is a frequently used modality for staging in the preoperative evaluation of gastric cancer (GC). Our aim was to interpret the importance of preoperative CT features in predicting overall survival (OS) in patients operated for GC.
    Methods: One hundred and one patients with GC (33 women, 68 men; range of age: 29-82 years, median age: 61 years) who had abdominal CT prior to surgical resection were included in the study retrospectively. Two radiologists evaluated CT scans to record the longest dimension of the tumor, the localization of the lesion, the attenuation values of the tumor in the arterial and venous phases (Hounsfield units), invasion depth of the lesion (T stage), and the number of pathological lymph nodes (LNs) (N stage). Postoperative pathological results including resection (R0, R1), T stage, N stage, grade, and histopathological subtype were documented. All CT-provided results and clinicopathological features associated with OS were analyzed by univariate, multivariate, and receiver operator characteristic analysis.
    Results: Multivariate analysis revealed that none of the CT features were associated with the OS. After resection, the survival ratio was poor for the R1 and high-grade groups than for the R0 and low-grade groups (p=0.001 and p=0.005, respectively). N stage and the longest dimension of the tumor on CT imaging truly estimated R1 resection status (AUC, 0.697; sensitivity, 63%; and specificity, 88%, and AUC, 0.734; sensitivity, 18%; and specificity, 76%, respectively).
    Conclusion: R1 resection status is associated with poor OS in GC. CT features, including the tumor's longest dimension and the number of pathological LNs, can predict R1 resection status.
    Language English
    Publishing date 2023-06-20
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 3026862-X
    ISSN 1308-5123 ; 1302-7123
    ISSN (online) 1308-5123
    ISSN 1302-7123
    DOI 10.14744/SEMB.2023.63373
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Comparison of MRI and 18F-FDG PET/CT in the Liver Metastases of Gastrointestinal and Pancreaticobiliary Tumors.

    Tahtabasi, Mehmet / Erturk, Sukru Mehmet / Basak, Muzaffer

    Sisli Etfal Hastanesi tip bulteni

    2021  Volume 55, Issue 1, Page(s) 12–17

    Abstract: Objectives: To compare the efficacy of 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET/CT) and magnetic resonance imaging (MRI) in the detection of liver metastases originating from the gastrointestinal system (GIS) and the ... ...

    Abstract Objectives: To compare the efficacy of 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET/CT) and magnetic resonance imaging (MRI) in the detection of liver metastases originating from the gastrointestinal system (GIS) and the pancreaticobiliary (PB) system.
    Methods: This retrospective study included 42 patients with primary GIS (stomach or colorectal) or PB system malignancies that metastasized to the liver, histopathologically confirmed diagnoses, and MRI and 18F-FDG PET/CT images. The MRI and 18F-FDG PET/CT images were analyzed. Student's t-test was used to compare the two modalities in terms of determining the number of metastases, and Cohen's kappa test was conducted to determine the agreement between the modalities.
    Results: Twenty-eight (66.7%) of the patients included in this study were male, and the mean age was 60.67±9.4 years. Colon (n=25; 59.5%) and pancreatic (n=7; 16.6%) adenocarcinomas were the most common primary tumors that had metastasized to the liver. MRI detected more metastases in 12 (28.5%) patients, less in seven (16.6%), and an equal number of metastases in 23 (54.7%). No statistically significant difference was observed between the number of metastases detected by MRI and 18F-FDG PET/CT (7.55±7.96 and 6.36±7.28, respectively; p=0.11). There was a moderate agreement between the two modalities (kappa value=0.423). Most of the metastases detected on MRI but not seen on 18F-FDG PET/CT (n=10, 23.8%) were lesions smaller than 10 mm. For the eight (19%) patients with lymph node metastases, the number of metastatic lymph nodes detected by MRI and 18F-FDG PET/CT was similar (12 and 14, respectively, p>0.05).
    Conclusion: MRI can detect small lesions at an early stage, and 18F-FDG PET/CT shows the metabolic activity of lesions; therefore, the combined use of the two modalities can potentially offer a beneficial outcome for patients.
    Language English
    Publishing date 2021-03-17
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 3026862-X
    ISSN 1308-5123 ; 1302-7123
    ISSN (online) 1308-5123
    ISSN 1302-7123
    DOI 10.14744/SEMB.2020.80270
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Immune checkpoint inhibitors: Assessment of the performance and the agreement of iRECIST, irRC, and irRECIST.

    Yirgin, Inci Kizildag / Dogan, Izzet / Engin, Gulgun / Vatansever, Sezai / Erturk, Sukru Mehmet

    Journal of cancer research and therapeutics

    2023  Volume 20, Issue 1, Page(s) 156–162

    Abstract: Introduction: Immunotherapy has become more widely accepted and used by medical oncologists. Radiologists face challenges in assessing tumor response and becoming more involved in the management of treatment. We aimed to assess the agreement between ... ...

    Abstract Introduction: Immunotherapy has become more widely accepted and used by medical oncologists. Radiologists face challenges in assessing tumor response and becoming more involved in the management of treatment. We aimed to assess the agreement between immune-related response criteria (irRC), immune-related RECIST (irRECIST), and immune RECIST (iRECIST) to correlate the response measured by them with overall survival (OS), and to determine the confirmation rate of progressive disease (PD).
    Methods: A total of 43 patients (28 men, 15 women; average age = 54.6 ± 15.7 years) treated with immunotherapy were included in this study. Pairwise agreements between iRECIST, irRC, and irRECIST were calculated using Cohen's kappa statistics. The correlation of the criteria-based response and OS was evaluated using the Kaplan-Meier method and log-rank test. A confirmation rate with 95% confidence intervals (CI) was calculated in patients with PD.
    Results: The kappa values between iRECIST and irRC, iRECIST and irRECIST, and irRC and irRECIST were 0.961 (almost perfect; P < 0.001), 0.961 (almost perfect; P < 0.001), and 0.922 (almost perfect; P < 0.001), respectively. The Kaplan-Meier method and log-rank test showed for each criterion a statistically significant correlation with OS (P < 0.05). The confirmation rates of PD for irRC, irRECIST, and iRECIST were 95% (19/20; 95% CI = 76.4-99.1%), 90% (18/20; 95% CI = 69.9-97.2%), and 90.5% (19/21; 95% CI = 71.1-97.4%), respectively.
    Conclusion: There was an almost perfect and statistically significant agreement between iRECIST, irRC, and irRECIST. The measurements performed with them significantly correlated with the OS; their confirmation rates were similar. iRECIST and irRECIST might be favored over irRC because of their relative ease of use.
    MeSH term(s) Male ; Humans ; Female ; Adult ; Middle Aged ; Aged ; Response Evaluation Criteria in Solid Tumors ; Immune Checkpoint Inhibitors/therapeutic use ; Neoplasms/pathology ; Immunotherapy/methods
    Chemical Substances Immune Checkpoint Inhibitors
    Language English
    Publishing date 2023-04-07
    Publishing country India
    Document type Journal Article
    ZDB-ID 2187633-2
    ISSN 1998-4138 ; 0973-1482
    ISSN (online) 1998-4138
    ISSN 0973-1482
    DOI 10.4103/jcrt.jcrt_1898_22
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: A Rare Presentation of Extramedullary Hematopoiesis: Perirenal Masses.

    Durmaz, Selahattin / Sahin, Cennet / Basak, Muzaffer / Erturk, Sukru Mehmet

    Journal of the College of Physicians and Surgeons--Pakistan : JCPSP

    2022  Volume 32, Issue 4, Page(s) S28–S30

    Abstract: Extramedullary hematopoiesis (EMH) is a physiological compensatory mechanism that develops in response to ineffective or insufficient hematopoiesis. Although the liver and spleen are the most common sites, EMH may occur anywhere in the body. Peri-renal ... ...

    Abstract Extramedullary hematopoiesis (EMH) is a physiological compensatory mechanism that develops in response to ineffective or insufficient hematopoiesis. Although the liver and spleen are the most common sites, EMH may occur anywhere in the body. Peri-renal involvement in EMH is quite rare and mimics tumoral lesions. To our knowledge, 12 peri-renal EMH cases have been reported in the literature so far.  A 57-year woman was admitted to our hospital with non-specific abdominal pain. She had a history of chronic renal failure. On physical examination, diffuse abdominal tenderness and mild rigidity were detected. Blood tests revealed bicytopenia and elevated acute phase reactants. On non-contrast abdominal computed tomography (CT) scan, two peri-renal mass lesions of 4.5 cm and 4 cm were detected incidentally on the right side. Tumoral lesions were considered in the differential diagnosis, and magnetic resonance imaging (MRI) and positron emission tomography-computed tomography (PET-CT) were performed. Lesions showed mild hypermetabolic activity (SUVmax: 4,68) on PET-CT images. For the definitive diagnosis, an ultrasound-guided core needle biopsy was performed. The histopathological examination was consistent with EMH. This case aims to highlight the peri-renal involvement of EMH, which mimics renal and peri-renal malignancies.
    MeSH term(s) Female ; Hematopoiesis, Extramedullary ; Humans ; Magnetic Resonance Imaging ; Positron Emission Tomography Computed Tomography ; Tomography, X-Ray Computed ; Ultrasonography
    Language English
    Publishing date 2022-05-20
    Publishing country Pakistan
    Document type Case Reports
    ZDB-ID 2276646-7
    ISSN 1681-7168 ; 1022-386X
    ISSN (online) 1681-7168
    ISSN 1022-386X
    DOI 10.29271/jcpsp.2022.Supp1.S28
    Database MEDical Literature Analysis and Retrieval System OnLINE

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