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Atasoy B, Balsak S, Alkan A, Akcay A, Peker AA, Toluk O, Atila N, Kaya A, Ipar O, Soysal P. The relationship between nutritional status and white matter integrity in older adults: A diffusion tensor imaging study. Clin Nutr 2024; 43:1065-1072. [PMID: 38579368 DOI: 10.1016/j.clnu.2024.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/27/2024] [Accepted: 03/27/2024] [Indexed: 04/07/2024]
Abstract
OBJECTIVES The purpose of this study to determinate whether there is a relationship between the nutritional status and white matter integrity in older patients by using Diffusion Tensor Imaging (DTI). METHODS The patients were evaluated by Mini-Nutritional Assessment Scale. The patients are categorized in the groups of well-nourished, risk of malnutrition, or malnourished, depending on the overall score> 23.5, 17-23.5, or 17; respectively. All patients had brain MRI and DTI. The mean diffusivity (MD), fractional anisotropy (FA), axial diffusivity (AD) and radial diffusivity (RD) values were calculated by ROI-based method in white matter tracts. RESULTS Total of the 224 patients; 86 patients had normal nutrition status (group 1), 107 patients were diagnosed with malnutrition risk (group 2) and 31 patients were diagnosed with malnutrition (group 3). Significantly decreased FA values of genu of corpus callosum, forceps minor and significantly increased MD values of middle cerebellar peduncle, and superior frontooccipital fasciculus were detected in group 2 in comparison to group 1 (p < 0.05). After adjusting for the folate and age, MD and RD values of cingulum remained significantly higher and the AD values of superior cerebellar peduncle remained significantly lower in group 3 (p < 0.05). CONCLUSIONS Malnutrition was associated with deteriorated DTI values, especially in cingulum and superior cerebellar peduncle. Assessing the nutritional status of older individuals is crucial to avoid its negative impact on brain. ADVANCES IN KNOWLEDGE Early diagnosis of malnutrition-related impaired WM integrity is important for prevention and intervention, and DTI is a useful non-invasive technique to be used for this purpose.
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Affiliation(s)
- Bahar Atasoy
- Bezmialem Vakıf University Hospital, Department of Radiology, 34093, Istanbul, Turkey.
| | - Serdar Balsak
- Bezmialem Vakıf University Hospital, Department of Radiology, 34093, Istanbul, Turkey.
| | - Alpay Alkan
- Bezmialem Vakıf University Hospital, Department of Radiology, 34093, Istanbul, Turkey.
| | - Ahmet Akcay
- Bezmialem Vakıf University Hospital, Department of Radiology, 34093, Istanbul, Turkey.
| | - Abdusselim Adil Peker
- Bezmialem Vakıf University Hospital, Department of Radiology, 34093, Istanbul, Turkey.
| | - Ozlem Toluk
- Bezmialem Vakıf University Hospital, Department of Bioistatistics and Medical Informatics, 34093, Istanbul, Turkey.
| | - Naz Atila
- Bezmialem Vakıf University Hospital, Department of Radiology, 34093, Istanbul, Turkey.
| | - Ahmet Kaya
- Salmaniya Medical Complex, Department of Radiology, Manama, Bahrain.
| | - Ozlem Ipar
- Department of Geriatric Medicine, Faculty of Medicine, Bezmialem Vakif University, Adnan Menderes Bulvarı (Vatan Street), 34093, Fatih, Istanbul, Turkey.
| | - Pinar Soysal
- Department of Geriatric Medicine, Faculty of Medicine, Bezmialem Vakif University, Adnan Menderes Bulvarı (Vatan Street), 34093, Fatih, Istanbul, Turkey.
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Tabar M, Gultekin MA, Peker AA, Toprak H. An unusual case of retroperitoneal synovial sarcoma with CT, MRI, and F-18 FDG PET/CT findings. J Clin Ultrasound 2024; 52:89-91. [PMID: 37947310 DOI: 10.1002/jcu.23609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 10/27/2023] [Accepted: 11/02/2023] [Indexed: 11/12/2023]
Abstract
Synovial sarcoma, predominantly found in the extremities, rarely occurs in the retroperitoneum. Tumors can often grow to a considerable size before diagnosis, which warrant the critical importance of early detection to minimize morbidity and mortality. While the final diagnosis relies on pathologic examination, imaging plays a crucial role in early detection.
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Affiliation(s)
- Murat Tabar
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Mehmet Ali Gultekin
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Abdusselim Adil Peker
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Huseyın Toprak
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
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Akçay A, Peker AA, Oran Z, Toprak H, Toluk Ö, Balsak S, Badur BA, Gültekin MA. Role of magnetic resonance imaging to differentiate between borderline and malignant serous epithelial ovarian tumors. Abdom Radiol (NY) 2024; 49:229-236. [PMID: 37857912 DOI: 10.1007/s00261-023-04076-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 09/20/2023] [Accepted: 09/20/2023] [Indexed: 10/21/2023]
Abstract
PURPOSE We aimed to differentiate serous borderline ovarian tumors (SBOT) from serous epithelial ovarian carcinomas (SEOC) using morphological and functional MRI findings, to improve the patient management. METHOD We retrospectively investigated 24 ovarian lesions diagnosed with SBOT and 64 ovarian lesions diagnosed with SEOC. Additional to the demographic and morphological findings T2W signal intensity ratio, mean apparent diffusion coefficient (ADCmean) and total apparent diffusion coefficient (ADCtotal) values were analyzed and compared between two groups. RESULTS Bilaterality, pelvic free fluid presence, serum CA-125 level (U/mL), presence of pelvic peritoneal implant were in favor of SEOC. Lower maximum size of solid component and solid size to maximum size ratio, dominantly cystic and solid-cystic appearance, exophytic growth pattern, presence of papiller projection and papillary architecture and internal branching pattern, higher T2W signal intensity ratio, ADCmean and ADCtotal values were in favor of SBOT. CONCLUSION Our study revealed that morphological and functional imaging findings were valuable in differentiating BSOT from SEOC.
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Affiliation(s)
- Ahmet Akçay
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey.
| | - Abdusselim Adil Peker
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey
| | - Zeynep Oran
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey
| | - Hüseyin Toprak
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey
| | - Özlem Toluk
- Department of Biostatistics, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Serdar Balsak
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey
| | - Bahar Atasoy Badur
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey
| | - Mehmet Ali Gültekin
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, +34093, Istanbul, Turkey
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Gultekin MA, Peker AA, Oktay AB, Turk HM, Cesme DH, Shbair ATM, Yilmaz TF, Kaya A, Yasin AI, Seker M, Mayadagli A, Alkan A. Differentiation of lung and breast cancer brain metastases: Comparison of texture analysis and deep convolutional neural networks. J Clin Ultrasound 2023; 51:1579-1586. [PMID: 37688435 DOI: 10.1002/jcu.23558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023]
Abstract
PURPOSE Metastases are the most common neoplasm in the adult brain. In order to initiate the treatment, an extensive diagnostic workup is usually required. Radiomics is a discipline aimed at transforming visual data in radiological images into reliable diagnostic information. We aimed to examine the capability of deep learning methods to classify the origin of metastatic lesions in brain MRIs and compare the deep Convolutional Neural Network (CNN) methods with image texture based features. METHODS One hundred forty three patients with 157 metastatic brain tumors were included in the study. The statistical and texture based image features were extracted from metastatic tumors after manual segmentation process. Three powerful pre-trained CNN architectures and the texture-based features on both 2D and 3D tumor images were used to differentiate lung and breast metastases. Ten-fold cross-validation was used for evaluation. Accuracy, precision, recall, and area under curve (AUC) metrics were calculated to analyze the diagnostic performance. RESULTS The texture-based image features on 3D volumes achieved better discrimination results than 2D image features. The overall performance of CNN architectures with 3D inputs was higher than the texture-based features. Xception architecture, with 3D volumes as input, yielded the highest accuracy (0.85) while the AUC value was 0.84. The AUC values of VGG19 and the InceptionV3 architectures were 0.82 and 0.81, respectively. CONCLUSION CNNs achieved superior diagnostic performance in differentiating brain metastases from lung and breast malignancies than texture-based image features. Differentiation using 3D volumes as input exhibited a higher success rate than 2D sagittal images.
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Affiliation(s)
- Mehmet Ali Gultekin
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Abdusselim Adil Peker
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Ayse Betul Oktay
- Department of Computer Engineering, Yildiz Technical University, Istanbul, Turkey
| | - Haci Mehmet Turk
- Department of Medical Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Dilek Hacer Cesme
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Abdallah T M Shbair
- Department of Medical Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Temel Fatih Yilmaz
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Ahmet Kaya
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Ayse Irem Yasin
- Department of Medical Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Mesut Seker
- Department of Medical Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Alpaslan Mayadagli
- Department of Radiation Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Alpay Alkan
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
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Peker AA, Toprak H, Yasin AI, Aydin M. Uncommon Testicular Germ Cell Tumor Thrombus in Azygos Vein Detected by FDG PET/CT. Clin Nucl Med 2021; 46:e347-e348. [PMID: 33782290 DOI: 10.1097/rlu.0000000000003588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT A 40-year old man admitted to the nuclear medicine department to undergo PET/CT for restaging of known testicular germ cell tumor. The patient had a history of orchiectomy for left testis and left nephrectomy with retroperitoneal lymph node dissection. Histopathology revealed testicular germ cell tumor. During the follow-up period, there is a rapidly expanding mass in posterior mediastinum. PET reveals increased FDG activity in the azygos vein. Contrast-enhanced CT of the thorax showed distended azygos vein with heterogeneously enhancing thrombus and peripheral fat stranding. Findings are consistent with azygos vein tumor thrombosis related to testicular germ cell tumor.
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Affiliation(s)
| | | | | | - Mehmet Aydin
- Nuclear Medicine, Bezmialem Vakıf University Faculty of Medicine, Istanbul, Turkey
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Yurtsever I, Sari L, Gultekin MA, Toprak H, Turk HM, Aliyev A, Peker AA, Yabaci A, Alkan A. Diffusion Tensor Imaging of Brain Metastases in Patients with Breast Cancer According to Molecular Subtypes. Curr Med Imaging 2021; 17:120-128. [PMID: 32564758 DOI: 10.2174/1573405616666200621195655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 05/05/2020] [Accepted: 05/09/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND AND PURPOSE Recent studies have shown that diffusion tensor imaging (DTI) parameters are used to follow the patients with breast cancer and correlate well as a prognostic parameter of breast cancer. However, as far as we know, there is no data to compare the DTI features of breast cancer brain metastases according to molecular subtypes in the literature. Our aim is to evaluate whether there are any differences in DTI parameters of brain metastases in patients with breast cancer according to molecular subtypes. METHODS Twenty-seven patients with breast cancer and 82 metastatic brain lesions were included. We classified subjects into three subgroups according to their hormone expression; Group 0, triple- negative (n; 6, 19 lesions), group 1, HER2-positive (n;16, 54 lesions) and group 2, hormone-- positive group (n; 5, 9 lesions). The apparent diffusion coefficient (ADC), fractional anisotropy (FA), axial diffusivity (AD), and radial diffusivity (RD) values in DTI were measured and compared between three groups. RESULTS ADC, AD and RD values of group 2 were significantly lower compared to group 0. No significant differences were found in FA, ADC, AD and RD values between the group 0 and 1 and the group 1 and 2. CONCLUSION Metastasis of aggressive triple-negative breast cancer showed higher ADC values compared to the less aggressive hormone-positive group. Higher ADC values in brain metastases of breast cancer may indicate a poor prognosis, so DTI findings could play a role in planning appropriate treatment.
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Affiliation(s)
- Ismail Yurtsever
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Lutfullah Sari
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Mehmet Ali Gultekin
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Huseyin Toprak
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Haci Mehmet Turk
- Department of Medical Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Altay Aliyev
- Department of Medical Oncology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Abdusselim Adil Peker
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Aysegul Yabaci
- Department of Biostatistics, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
| | - Alpay Alkan
- Department of Radiology, Faculty of Medicine, Bezmialem Vakif University, Istanbul, Turkey
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