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Shimizu H, Mori N, Mugikura S, Maekawa Y, Miyashita M, Nagasaka T, Sato S, Takase K. Application of Texture and Volume Model Analysis to Dedicated Axillary High-resolution 3D T2-weighted MR Imaging: A Novel Method for Diagnosing Lymph Node Metastasis in Patients with Clinically Node-negative Breast Cancer. Magn Reson Med Sci 2024; 23:161-170. [PMID: 36858636 PMCID: PMC11024718 DOI: 10.2463/mrms.mp.2022-0091] [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: 08/04/2022] [Accepted: 01/23/2023] [Indexed: 03/03/2023] Open
Abstract
PURPOSE To evaluate the effectiveness of the texture analysis of axillary high-resolution 3D T2-weighted imaging (T2WI) in distinguishing positive and negative lymph node (LN) metastasis in patients with clinically node-negative breast cancer. METHODS Between December 2017 and May 2021, 242 consecutive patients underwent high-resolution 3D T2WI and were classified into the training (n = 160) and validation cohorts (n = 82). We performed manual 3D segmentation of all visible LNs in axillary level I to extract the texture features. As the additional parameters, the number of the LNs and the total volume of all LNs for each case were calculated. The least absolute shrinkage and selection operator algorithm and Random Forest were used to construct the models. We constructed the texture model using the features from the LN with the largest least axis length in the training cohort. Furthermore, we constructed the 3 models combining the selected texture features of the LN with the largest least axis length, the number of LNs, and the total volume of all LNs: texture-number model, texture-volume model, and texture-number-volume model. As a conventional method, we manually measured the largest cortical diameter. Moreover, we performed the receiver operating curve analysis in the validation cohort and compared area under the curves (AUCs) of the models. RESULTS The AUCs of the texture model, texture-number model, texture-volume model, texture-number-volume model, and conventional method in the validation cohort were 0.7677, 0.7403, 0.8129, 0.7448, and 0.6851, respectively. The AUC of the texture-volume model was higher than those of other models and conventional method. The sensitivity, specificity, positive predictive value, and negative predictive value of the texture-volume model were 90%, 69%, 49%, and 96%, respectively. CONCLUSION The texture-volume model of high-resolution 3D T2WI effectively distinguished positive and negative LN metastasis for patients with clinically node-negative breast cancer.
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Affiliation(s)
- Hiroaki Shimizu
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Tohoku University School of Medicine, Sendai, Miyagi, Japan
| | - Naoko Mori
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shunji Mugikura
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Division of Image Statistics, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Yui Maekawa
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Minoru Miyashita
- Department of Surgical Oncology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Tatsuo Nagasaka
- Department of Radiological Technology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Satoko Sato
- Department of Anatomic Pathology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kei Takase
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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Zhang Y, Tatewaki Y, Nakase T, Liu Y, Tomita N, Thyreau B, Zheng H, Muranaka M, Takano Y, Nagasaka T, Taki Y. Impact of hs-CRP concentration on brain structure alterations and cognitive trajectory in Alzheimer's disease. Front Aging Neurosci 2023; 15:1227325. [PMID: 37593375 PMCID: PMC10427872 DOI: 10.3389/fnagi.2023.1227325] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 07/13/2023] [Indexed: 08/19/2023] Open
Abstract
Introduction Present study was to investigate hs-CRP concentration, brain structural alterations, and cognitive function in the context of AD [Subjective cognitive decline (SCD), mild cognitive impairment (MCI), and AD]. Methods We retrospectively included 313 patients (Mean age = 76.40 years, 59 SCD, 101 MCI, 153 AD) in a cross-sectional analysis and 91 patients (Mean age = 75.83 years, 12 SCD, 43 MCI, 36 AD) in a longitudinal analysis. Multivariable linear regression was conducted to investigate the relationship between hs-CRP concentration and brain structural alterations, and cognitive function, respectively. Results Hs-CRP was positively associated with gray matter volume in the left fusiform (β = 0.16, pFDR = 0.023) and the left parahippocampal gyrus (β = 0.16, pFDR = 0.029). Post hoc analysis revealed that these associations were mainly driven by patients with MCI and AD. The interaction of diagnosis and CRP was significantly associated with annual cognitive changes (β = 0.43, p = 0.008). Among these patients with AD, lower baseline CRP was correlated with greater future cognitive decline (r = -0.41, p = 0.013). Conclusion Our study suggests that increased hs-CRP level may exert protective effect on brain structure alterations and future cognitive changes among patients already with cognitive impairment.
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Affiliation(s)
- Ye Zhang
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Yasuko Tatewaki
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Taizen Nakase
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Yingxu Liu
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Naoki Tomita
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | | | - Haixia Zheng
- Laureate Institute for Brain Research, Tulsa, OK, United States
| | - Michiho Muranaka
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Yumi Takano
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Tatsuo Nagasaka
- Division of Radiology, Tohoku University Hospital, Sendai, Japan
| | - Yasuyuki Taki
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
- Smart-Aging Research Center, Tohoku University, Sendai, Japan
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Zhang Y, Tatewaki Y, Liu Y, Tomita N, Nagasaka T, Muranaka M, Yamamoto S, Takano Y, Nakase T, Mutoh T, Taki Y. Perceived social isolation is correlated with brain structure and cognitive trajectory in Alzheimer’s disease. GeroScience 2022; 44:1563-1574. [PMID: 35526259 PMCID: PMC9079214 DOI: 10.1007/s11357-022-00584-6] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/02/2022] [Indexed: 11/24/2022] Open
Abstract
Both objective and perceived social isolations were associated with future cognitive decline and increase risk of Alzheimer’s disease (AD). However, the impacts of perceived social isolation depending on different clinical stages of AD have not been elucidated. The aim of this study was to investigate the influence of perceived social isolation or loneliness on brain structure and future cognitive trajectories in patients who are living with or are at risk for AD. A total of 176 elderly patients (mean age of 78 years) who had complaint of memory problems (39 subjective cognitive decline [SCD], 53 mild cognitive impairment [MCI], 84 AD) underwent structural MRI and neuropsychological testing. Loneliness was measured by one binary item question “Do you often feel lonely?.” Voxel-based morphometry was conducted to evaluate regional gray matter volume (rGMV) difference associated with loneliness in each group. To evaluate individual differences in cognitive trajectories based on loneliness, subgroup analysis was performed in 51 patients with AD (n = 23) and pre-dementia status (SCD-MCI, n = 28) using the longitudinal scores of Alzheimer’s Disease Assessment Scale-cognitive component-Japanese version (ADAS-Jcog). Whole brain VBM analysis comparing lonely to non-lonely patients revealed loneliness was associated with decreased rGMV in bilateral thalamus in SCD patients and in the left middle occipital gyrus and the cerebellar vermal lobules I − V in MCI patients. Annual change of ADAS-Jcog in patients who reported loneliness was significantly greater comparing to these non-lonely in SCD-MCI group, but not in AD group. Our results indicate that perceived social isolation, or loneliness, might be a comorbid symptom of patients with SCD or MCI, which makes them more vulnerable to the neuropathology of future AD progression.
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Affiliation(s)
- Ye Zhang
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Yasuko Tatewaki
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
| | - Yingxu Liu
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
| | - Naoki Tomita
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
| | - Tatsuo Nagasaka
- Division of Radiology, Tohoku University Hospital, Sendai, 980-8574, Japan
| | - Michiho Muranaka
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
| | - Shuzo Yamamoto
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
| | - Yumi Takano
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
| | - Taizen Nakase
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
| | - Tatsushi Mutoh
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan.
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan.
- Department of Surgical Neurology, Research Institute for Brain and Blood Vessels-AKITA, Akita, 010-0874, Japan.
| | - Yasuyuki Taki
- Department of Aging Research and Geriatric Medicine, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai, 980-8575, Japan
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Aoba-ku, Sendai, 980-8575, Japan
- Smart-Aging Research Center, Tohoku University, Aoba-ku, Sendai, 980-8575, Japan
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Mori N, Inoue C, Tamura H, Nagasaka T, Ren H, Sato S, Mori Y, Miyashita M, Mugikura S, Takase K. Apparent diffusion coefficient and intravoxel incoherent motion-diffusion kurtosis model parameters in invasive breast cancer: Correlation with the histological parameters of whole-slide imaging. Magn Reson Imaging 2022; 90:53-60. [DOI: 10.1016/j.mri.2022.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 03/04/2022] [Accepted: 04/12/2022] [Indexed: 01/18/2023]
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Mori R, Kassai Y, Masuda A, Morita Y, Kimura T, Nagasaka T, Nishina T, Tanaka S, Miyazaki M, Takase K, Ota H. Ultrashort echo time time-spatial labeling inversion pulse magnetic resonance angiography with denoising deep learning reconstruction for the assessment of abdominal visceral arteries. J Magn Reson Imaging 2020; 53:1926-1937. [PMID: 33368773 DOI: 10.1002/jmri.27481] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 05/05/2020] [Revised: 12/04/2020] [Accepted: 12/04/2020] [Indexed: 12/24/2022] Open
Abstract
Current contrast-enhanced magnetic resonance angiography (MRA) and non-contrast-enhanced balanced steady-state free precession (bSSFP) MRA cause susceptibility artifacts from metallic devices in assessing endovascular visceral-artery interventions. The aims of this study are to investigate and compare image quality (IQ) and susceptibility artifacts of three-dimensional (3D) ultrashort echo time (UTE) time-spatial labeling inversion pulse (Time-SLIP) with those of 3D bSSFP Time-SLIP and to assess denoising deep learning reconstruction (dDLR) for the improvement of the signal-to-noise ratio (SNR) in 3D UTE with sparse sampling in phantoms and human subjects. This is a prospective type of study. Pulsatile glycerin-water flow phantom with platinum-tungsten-alloy coil, stainless-steel, nitinol, and cobalt-alloy stents were used. Ten healthy volunteers (seven males) and three patients (two males) were included in this study. 3D UTE Time-SLIP and 3D bSSFP Time-SLIP at 3T were used. The phantom-based study compared the signal-intensity ratio of the device levels (SRdevice ) and distal segments (SRdistal ) to the proximal segments. The volunteer-based study measured SNR, contrast ratio (CR), and IQ. The patient study evaluated local artifacts from metallic devices. Statistical tests included paired t-tests, Wilcoxon-signed rank tests, and Kruskal-Wallis tests. In the phantom-based study, SRdevice was small with UTE Time-SLIP, except the stainless-steel stent. SRdistal was greater (49.1%-90.4%) on bSSFP images than UTE images (-11.1% to 9.6%). Among volunteers, dDLR in UTE images improved SNR (p < 0.05) and IQ (p < 0.05), but CR was unaffected. UTE Time-SLIP showed inferior SNR and IQ than bSSFP Time-SLIP in images with and without dDLR (p < 0.05 for each). However, among patients, UTE Time-SLIP showed reduced metal artifacts compared to bSSFP Time-SLIP. Irrespective of the lower SNR and IQ of 3D UTE Time-SLIP than those of 3D bSSFP Time-SLIP, the former appeared to better depict flow after stenting or coiling. This indicates the potential of 3D UTE Time-SLIP to provide suitable diagnostic images of target vessels. dDLR improved SNR with reducing artifacts related to radial sampling, while maintaining the contrast. LEVEL OF EVIDENCE: 2. TECHNICAL EFFICACY STAGE: 2.
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Affiliation(s)
- Ryuichi Mori
- Department of Radiology, Tohoku University Hospital, Sendai, Japan
| | | | - Atsuro Masuda
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan
| | - Yoshiaki Morita
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan
| | - Tomoyoshi Kimura
- Department of Radiology, Tohoku University Hospital, Sendai, Japan
| | - Tatsuo Nagasaka
- Department of Radiology, Tohoku University Hospital, Sendai, Japan
| | | | - Sho Tanaka
- Canon Medical Systems Corporation, Tochigi, Japan
| | - Mitsue Miyazaki
- Department of Radiology, University of California San Diego, San Diego, California, USA
| | - Kei Takase
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.,Department of Advanced MRI Collaboration Research, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hideki Ota
- Department of Diagnostic Radiology, Tohoku University Hospital, Sendai, Japan.,Department of Advanced MRI Collaboration Research, Tohoku University Graduate School of Medicine, Sendai, Japan
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Takano Y, Tatewaki Y, Mutoh T, Morota N, Matsudaira I, Thyreau B, Nagasaka T, Odagiri H, Yamamoto S, Arai H, Taki Y. Voxel-Based Morphometry Reveals a Correlation Between Bone Mineral Density Loss and Reduced Cortical Gray Matter Volume in Alzheimer's Disease. Front Aging Neurosci 2020; 12:178. [PMID: 32625080 PMCID: PMC7311782 DOI: 10.3389/fnagi.2020.00178] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 05/25/2020] [Indexed: 11/13/2022] Open
Abstract
Background: Decreased bone mineral density (BMD) was associated with poorer cognitive function and increased risk of Alzheimer's disease (AD). However, objective evidence for the relationship between osteoporosis and AD in humans has not been extensively described. Objectives: We aimed to evaluate the relationships between BMD and the cortical volumes of brain regions vulnerable to AD; hippocampus, parahippocampal gyrus, precuneus, posterior cingulate, and angular gyrus, using voxel-based morphometry (VBM), to investigate the association between bone loss and AD. Methods: A cohort of 149 consecutive elderly participants who complained of memory disturbance underwent high-resolution structural brain magnetic resonance imaging (MRI) and dual-energy X-ray absorptiometry (DXA). We used SPM12 software to conduct a voxel-based multiple regression analysis to examine the association between femoral neck BMD values and regional gray matter volume (rGMV) on structural T1-weighted MRI. Results: After adjusting for subject age, gender, total brain volume (TBV), and mini-mental state examination (MMSE) scores, the multiple regression analysis showed significant correlations between BMD loss and rGMV decline in the left precuneus, which is an important neural network hub vulnerable to AD. Conclusion: These data suggest that the bone and brain communicate with each other, as in "bone-brain crosstalk," and that control of BMD factors could contribute to cognitive function and help prevent AD.
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Affiliation(s)
- Yumi Takano
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Yasuko Tatewaki
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Tatsushi Mutoh
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Naoya Morota
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Izumi Matsudaira
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Benjamin Thyreau
- Smart-Aging International Research Center, Tohoku University, Sendai, Japan
| | - Tatsuo Nagasaka
- Division of Radiology, Tohoku University Hospital, Sendai, Japan
| | - Hayato Odagiri
- Division of Radiology, Tohoku University Hospital, Sendai, Japan
| | - Shuzo Yamamoto
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan
| | - Hiroyuki Arai
- Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan.,Department of Geriatrics and Gerontology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Yasuyuki Taki
- Department of Nuclear Medicine and Radiology, Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan.,Department of Geriatric Medicine and Neuroimaging, Tohoku University Hospital, Sendai, Japan.,Smart-Aging International Research Center, Tohoku University, Sendai, Japan
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Mori N, Mugikura S, Miyashita M, Mori Y, Maekawa Y, Nagasaka T, Takase K. Turbo Spin-echo Diffusion-weighted Imaging Compared with Single-shot Echo-planar Diffusion-weighted Imaging: Image Quality and Diagnostic Performance When Differentiating between Ductal Carcinoma in situ and Invasive Ductal Carcinoma. Magn Reson Med Sci 2020; 20:60-68. [PMID: 32147641 PMCID: PMC7952202 DOI: 10.2463/mrms.mp.2019-0195] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Purpose: To compare the image quality between turbo spin-echo (TSE)-diffusion weighted imaging (DWI) and single-shot echo-planar imaging (EPI)-DWI, and to verify the diagnostic performance of the apparent diffusion coefficient (ADC) parameters of the two techniques by using histogram analysis in terms of differentiation between ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC) lesions. Methods: Ninety-four women with 94 lesions diagnosed as breast cancer by surgery underwent IRB-approved preoperative magnetic resonance imaging, including TSE and EPI-DWI with b-values of 50 and 850 s/mm2. Twenty lesions were identified as DCIS and 74 as IDC. Image quality [signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and geometric distortion] was evaluated quantitatively and compared between the TSE and EPI-DWI. A histogram analysis of the entire tumor voxel-based ADC data was performed, and the 10th, 25th, 50th, 75th, and 90th percentile values of each technique were compared between DCIS and IDC lesions. Results: The SNR and CNR of TSE-DWI were significantly higher than those of EPI-DWI (P < 0.0001 and < 0.0001). The geometric distortion of TSE-DWI was significantly lower than that of EPI-DWI (P < 0.0001). In TSE-DWI, the 10th, 25th, 50th, and 75th percentile values were significantly different between the DCIS and IDC lesions (P = 0.0010, 0.0004, 0.0008, and 0.0044, respectively). In EPI-DWI, the 50th and 75th percentile values were significantly different between the two groups (P = 0.0009 and 0.0093). There was no significant difference in the area under the curve of the receiver operating characteristic analysis of the 10th, 25th, 50th, and 75th percentile values of TSE-DWI, and the 50th and 75th percentile values of EPI-DWI (P = 0.29). Conclusion: The image quality of TSE-DWI was better than that of EPI-DWI. DCIS lesions were distinguished from IDC lesions with a wider range of percentile values in TSE-DWI than in EPI-DWI, although diagnostic performance was not significantly different between the techniques.
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Affiliation(s)
- Naoko Mori
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
| | - Shunji Mugikura
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
| | - Minoru Miyashita
- Department of Surgical Oncology, Tohoku University Graduate School of Medicine
| | - Yu Mori
- Department of Orthopaedic Surgery, Tohoku University Graduate School of Medicine
| | - Yui Maekawa
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
| | - Tatsuo Nagasaka
- Department of Radiological Technology, Tohoku University Graduate School of Medicine
| | - Kei Takase
- Department of Diagnostic Radiology, Tohoku University Graduate School of Medicine
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Nagasaka T, Inada R, Ojima H, Noura S, Tanioka H, Munemoto Y, Shimada Y, Ishibashi K, Shindo Y, Kagawa Y, Tomibayashi A, Okamoto K, Tsuji A, Tsuji Y, Yamaguchi S, Sawaki A, Mishima H, Shimokawa M, Okajima M, Yamaguchi Y. Randomized phase III study of sequential treatment with capecitabine or 5-fluorouracil (FP) plus bevacizumab (BEV) followed by the addition with oxaliplatin (OX) versus initial combination with OX+FP+ BEV in the first-line chemotherapy for metastatic colorectal cancer: The C-cubed study. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz246.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tanioka H, Nagasaka T, Uno F, Inoue M, Okita H, Katata Y, Kanzaki H, Kuramochi H, Satake H, Shindo Y, Doi A, Nasu J, Yamashita H, Yamaguchi Y. Relationship between peripheral neuropathy and effectiveness in second-line chemotherapy for unresectable advanced gastric cancer: a prospective, observational, multicenter study protocol. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nagasaka T, Tanioka H, Nyuya A, Katata Y, Okawaki M, Yamamura M, Kawai T, Yasui K, Toshima T, Mori Y, Umeda Y, Tsuruta A, Ueno T, Yamaguchi Y. Poor prognosis of hypermutant colorectal cancer with KRAS mutations: A retrospective analysis of 1,052 Japanese colorectal cancer patients without treatment of immuno-checkpoint inhibitors. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz155.260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Toshima T, Nyuya A, Umeda U, Yasui K, Yoshida K, Fujiwara T, Goel A, Nagasaka T. Liquid biopsy has a potential to predict the colorectal cancer patients with destiny for recurrence after curative surgery. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy431.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Katata Y, Nagasaka T, Tanioka H, Nyuya A, Toshima T, Mori Y, Shigeyasu K, Okawaki M, Yamamura M, Tsuruta A, Ueno T, Yamaguchi Y. Efficacy of ramucirumab in combination with second-line or salvage-line FOLFIRI in patients with metastatic colorectal cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy431.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Tanioka H, Asano M, Kawasaki K, Yoshida R, Waki N, Uno F, Ishizaki M, Yamashita K, Morishita Y, Katata Y, Nagasaka T. Incidence of catheter-related thrombosis in patients with long-term indwelling central venous catheter who received chemotherapies for unresectable advanced digestive cancers. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy432.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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14
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Ota H, Tamura H, Itabashi R, Yazawa Y, Nakamura Y, Hisamatsu K, Takamatsu M, Endo H, Niizuma K, Enomoto Y, Nagasaka T, Kajita K, Watanabe M, Yoshimura S, Yuan C. Quantitative characterization of carotid plaque components using MR apparent diffusion coefficients and longitudinal relaxation rates at 3T: A comparison with histology. J Magn Reson Imaging 2018; 48:1657-1667. [DOI: 10.1002/jmri.26216] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Accepted: 05/22/2018] [Indexed: 11/11/2022] Open
Affiliation(s)
- Hideki Ota
- Department of Diagnostic Radiology; Tohoku University Hospital; Miyagi Japan
| | - Hajime Tamura
- Division of Medical Physics; Tohoku University Graduate School of Medicine; Miyagi Japan
| | - Ryo Itabashi
- Department of Stroke Neurology; Kohnan Hospital; Miyagi Japan
| | - Yukako Yazawa
- Department of Stroke Neurology; Kohnan Hospital; Miyagi Japan
| | - Yasuhiro Nakamura
- Division of Pathology, Faculty of Medicine; Tohoku Medical and Pharmaceutical University, Miyagi, Japan; Miyagi Japan
| | - Kenji Hisamatsu
- Pathology Division; Gifu University Hospital; Gifu Japan
- Department of Tumor Pathology; Gifu University Graduate School of Medicine; Gifu Japan
| | - Manabu Takamatsu
- Department of Pathology; The Cancer Institute Hospital, Japanese Foundation for Cancer Research; Tokyo Japan
| | - Hidenori Endo
- Department of Neurosurgery; Tohoku University Graduate School of Medicine; Miyagi Japan
| | - Kuniyasu Niizuma
- Department of Neurosurgery; Tohoku University Graduate School of Medicine; Miyagi Japan
| | - Yukiko Enomoto
- Department of Neurosurgery; Gifu University Graduate School of Medicine; Gifu Japan
| | - Tatsuo Nagasaka
- Department of Radiological Technology; Tohoku University Hospital; Miyagi Japan
| | - Kimihiro Kajita
- Department of Radiology service; Gifu University Hospital; Gifu Japan
| | - Mika Watanabe
- Department of Pathology; Tohoku University Hospital; Miyagi Japan
| | | | - Chun Yuan
- Department of Radiology; University of Washington; Seattle Washington USA
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15
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Yamamura M, Yamauchi A, Katase N, Katata Y, Tanioka H, Okawaki M, Nagasaka T, Yamaguchi Y. Heat shock protein 90 (HSP90) inhibitor as a candidate treatment option for gastrointestinal stromal tumor with acquired resistance for conventional receptor tyrosine kinase inhibitors. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy299.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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16
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Nagasaka T, Nyuya A, Tanioka H, Katata Y, Yokota M, Taniguchi F, Kawai T, Mori Y, Shigeyasu K, Okawaki M, Yamamura M, Umeda Y, Tsuruta A, Ueno T, Yamaguchi Y. Distinct clinico-pathological features of hypermutant colorectal cancers with POLE pathogenic mutations, Lynch syndrome and sporadic MSI analyzed over 1,000 colorectal cancer patients. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy281.079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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17
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Abstract
Nine eyes suffering from retinal detachment with giant tear were treated successfully by pneumatic retinopexy, followed by conventional buckling procedures and cryopexy. The retina in six of the nine eyes reattached after initial operation, whereas two required additional injection of SF6 gas. The remaining eye, having developed low-grade proliferative vitreoretinopathy (PVR C1), was treated successfully with vitrectomy. Visual outcome was rather poor immediately after the procedures due to vitreous opacity caused by gas injection. However, all cases showed excellent visual acuity five months after surgery. Visual field examined in six cases after surgery showed no significant constriction. If the retinal flap is mobile, pneumatic retinopexy may be effective in treating retinal detachment with giant tear.
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Affiliation(s)
- F Ando
- Department of Ophthalmology, Nagoya National Hospital, Japan
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18
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Sasaki K, Ota H, Kimura T, Onuma T, Nagasaka T, Saiki Y, Maruyama R. Evaluation of cardiovascular hemodynamics in response to recumbent positions by using magnetic resonance imaging. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.848.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Konosuke Sasaki
- Cardiovascular surgeryTohoku University Graduate School of MedicineSendaiJapan
| | - Hideki Ota
- Diagnostic RadiologyTohoku University HospitalSendaiJapan
| | | | | | | | - Yoshikatsu Saiki
- Cardiovascular surgeryTohoku University Graduate School of MedicineSendaiJapan
| | - Ryoko Maruyama
- Health SciencesTohoku University Graduate School of MedicineSendaiJapan
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19
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Nemoto H, Nagasaka T, Ota H, Yamashita Y, Nishina T, Machida Y. [Distortion Reduction Effect of View Angle Tilting (VAT) in Large Field of View Magnetic Resonance Imaging]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2018; 74:675-684. [PMID: 30033961 DOI: 10.6009/jjrt.2018_jsrt_74.7.675] [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] [Indexed: 06/08/2023]
Abstract
With shortening of the gantry of magnetic resonance imaging (MRI) systems, large field-of-view (FOV) imaging has become difficult because static magnetic field nonuniformity and gradient magnetic field nonlinearity exacerbate geometric distortion of MR images. However, results of earlier studies have demonstrated that view angle tilting (VAT) can reduce severe image distortion attributable to local susceptibility effects of metals. Although VAT is usually applied to local magnetic field nonuniformity, in principle VAT is expected to correct distortion also for peripheral images in large-FOV MRI. Results from this phantom experiment using VAT with large-FOV verified the effectiveness of distortion correction. The experiment using VAT showed reduction of maximum distortion from 23.6 to -1.9 mm. Furthermore, results of a volunteer study confirmed the distortion correction capability of VAT: it reduced distortion and improved visibility of the anatomical structure. In conclusion, experimentally obtained results underscore VAT effectiveness for improving distortion in large-FOV MRI.
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Affiliation(s)
- Hitoshi Nemoto
- Clinical Technology Department of Radiology, Tohoku University Hospital
| | - Tatsuo Nagasaka
- Clinical Technology Department of Radiology, Tohoku University Hospital
| | - Hideki Ota
- Department of Diagnostic Radiology, Tohoku University Hospital
| | | | | | - Yoshio Machida
- Health Sciences, Tohoku University Graduate School of Medicine
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20
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Shindo K, Sato T, Satake A, Kurita N, Tsuchiya M, Ichinose Y, Hata T, Koh K, Yamashiro N, Kobayashi F, Nagasaka T, Takiyama Y. Skin vasomotor regulation in patients with multiple system atrophy. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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21
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Nagasaka T, Hata T, Ichinose Y, Kho K, Yamashiro N, Tsuchiya M, Takaki R, Shindo K, Takiyama Y. Morphological features of mitochondria in anti-mitochondrial antibodies-positive myositis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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22
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Yasui K, Nagasaka T, Nyuya A, Toshima T, Kawai T, Shigeyasu K, Yano S, Mori Y, Haraga J, Nakamura K, Umeda Y, Goel A, Fujiwara T. Gene expression signatures in BRAF V600E mutant colorectal cancer in relation to WNT signaling cascade. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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23
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Nyuya A, Haraga J, Nagasaka T, Nakamura K, Haruma T, Nishida T, Yasui K, Fujiwara T, Goel A, Masuyama H. POLE mutations and MSI were positive predictive factors for progression free survival in endometrial cancer patients at the risk of recurrence. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx372.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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24
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Toshima T, Nagasaka T, Mori Y, Kawai T, YASUI K, Fuji T, Taniguchi F, Kimura K, Kishimoto H, Umeda Y, Goel A, Fujiwara T. A novel circulating cell free DNA-based assay can predict tumor response to systematic chemotherapy. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx390.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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25
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Mori Y, Suzuki N, Nagasaka T, Tanioka H, Iwamoto Y, Neki Y, Yamatsuji T, Kobayashi M, Nakajima M, Ojima Y, Ikeda S, Kawamoto K, Shinozaki K, Tsuji A, Hinoi T, Yamaguchi Y, Yamashita K, Shimokawa M, Okajima M, Hazama S. Multicenter phase II study of biweekly XELIRI plus bevacizumab as a second-line therapy in patients with metastatic colorectal cancer (JSWOG-C3 study). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx393.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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26
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Nagasaka T, Funada R, Umeyama A, Sato M, Takama N, Kurabayashi M. P870Long-term outcome of hemodialysis patients after deferral revascularization based on functional flow reverse. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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27
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Umeyama A, Takama N, Nagasaka T, Kurabayashi M. P6177Brain natriuretic peptide is good predictor for assessing super responders of adaptive servo ventilation therapy in patients with heart failure. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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28
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Muroga T, Tanaka T, Kondo M, Nagasaka T, Xu Q. Characterization of Liquid Lithium Blanket with RAFM and V-Alloy for TBM and DEMO. Fusion Science and Technology 2017. [DOI: 10.13182/fst09-a9024] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- T. Muroga
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - T. Tanaka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M. Kondo
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - T. Nagasaka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - Q. Xu
- The Graduate University for Advanced Studies, Toki, Gifu 509-5292, Japan
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29
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Li YF, Kondo M, Nagasaka T, Muroga T, Tsisar V. Influence of Exposure to Pb-Li on Microstructure and Mechanical Properties of 9Cr-ODS and CLAM Steels. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12380] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. F. Li
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
- Institute of Plasma Physics, Chinese Academy Sciences, Hefei 230031, China
| | - M. Kondo
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - T. Nagasaka
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - T. Muroga
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
| | - V. Tsisar
- National Institute for Fusion Science, 322-6 Oroshi, Toki, Gifu 509-5292, Japan
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30
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Hara N, Nogami S, Nagasaka T, Hasegawa A, Tanigawa H, Muroga T. Mechanical Property Changes and Irradiation Hardening Due to Dissimilar Metal Welding with Reduced Activation Ferritic/Martensitic Steel and 316L Stainless Steel. Fusion Science and Technology 2017. [DOI: 10.13182/fst09-a8921] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- N. Hara
- Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, Japan
| | - S. Nogami
- Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, Japan
| | - T. Nagasaka
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
| | - A. Hasegawa
- Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, Japan
| | - H. Tanigawa
- Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - T. Muroga
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
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31
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Hashizume K, Masuda J, Otsuka KT, Tanabe T, Hatano Y, Nakamura Y, Nagasaka T, Muroga T. Tritium Diffusion in V-4Cr-4Ti Alloy. Fusion Science and Technology 2017. [DOI: 10.13182/fst08-a1876] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- K. Hashizume
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka, 812-8581, Japan
| | - J. Masuda
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka, 812-8581, Japan
| | - K. T. Otsuka
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka, 812-8581, Japan
| | - T. Tanabe
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka, 812-8581, Japan
| | - Y. Hatano
- Hydrogen Isotope Research Center, University of Toyama, Toyama 930-8555, Japan
| | - Y. Nakamura
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - T. Nagasaka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - T. Muroga
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
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32
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Nogami S, Hara N, Nagasaka T, Hasegawa A, Muroga T. Effect of PWHT on the Mechanical and Metallographical Properties of a Dissimilar-Metal Weld Joint of F82H and SUS316L Steels. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12375] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Nogami
- Tohoku University, Sendai 980-8579, Japan
| | - N. Hara
- Tohoku University, Sendai 980-8579, Japan
| | - T. Nagasaka
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
| | | | - T. Muroga
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
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33
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Nogami S, Miyazaki J, Nagasaka T, Hasegawa A, Muroga T. Study on Dissimilar-Material Welding with Vanadium and Austenitic Stainless Steel. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12392] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Nogami
- Tohoku University, Sendai 980-8579, Japan
| | | | - T. Nagasaka
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
| | | | - T. Muroga
- National Institute for Fusion Science, Oroshi, Toki, Gifu 509-5292, Japan
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34
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Affiliation(s)
- Qi Xu
- The Graduate University for Advanced Studies, Toki, Gifu 509-5292 Japan
| | - T. Nagasaka
- National Institute for Fusion Science, Toki, Gifu 509-5292 Japan
| | - T. Muroga
- National Institute for Fusion Science, Toki, Gifu 509-5292 Japan
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35
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Hishinuma Y, Tanaka T, Tanaka T, Nagasaka T, Tasaki Y, Murakami S, Matsuda K, Sagara A, Muroga T. Development of ER2O3 Coating for Hydrogen Permeation Barrier Through MOCVD Process in an Advanced Breeding Blanket. Fusion Science and Technology 2017. [DOI: 10.13182/fst11-a12614] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Hishinuma
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu Japan 509-5292
| | - T. Tanaka
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu Japan 509-5292
| | - T. Tanaka
- Toshima MFG, Co., Ltd, 1414, Shimonomoto, Higashimatsuyama, Saitama, Japan 355-0036
| | - T. Nagasaka
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu Japan 509-5292
| | - Y. Tasaki
- Toshima MFG, Co., Ltd, 1414, Shimonomoto, Higashimatsuyama, Saitama, Japan 355-0036
| | - S. Murakami
- University of Toyama, 3190, Gofuku, Toyama, Japan 930-8555
| | - K. Matsuda
- University of Toyama, 3190, Gofuku, Toyama, Japan 930-8555
| | - A. Sagara
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu Japan 509-5292
| | - T. Muroga
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu Japan 509-5292
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36
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Hayakawa N, Sato Y, Nagasaka A, Mano Y, Nagasaka T, Nakai A, Iwase K, Yoshida S. High levels of DNA polymerase β mRNA corresponding with the high activity in Graves' thyroid tissue. J Endocrinol Invest 2017; 40:385-389. [PMID: 27848228 DOI: 10.1007/s40618-016-0571-0] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 10/18/2016] [Indexed: 10/20/2022]
Abstract
INTRODUCTION High DNA polymerase β activity has been observed in the thyroid tissue of patients with Graves' disease (Nagasaka et al. in Metabolism 37:1051-1054, 1988). This fact aroused our interest in whether the alteration of DNA polymerase β activity depends on DNA polymerase β (DNA poly β) mRNA levels, which may be modulated by thyroid-stimulating hormone (TSH) or thyroid-stimulating substances, i.e. TSH receptor antibody (TRAb). RESULT Addition of TSH or TRAb to primary cultures of Graves' disease thyroid cells for 4 h led to no increase in DNA poly β mRNA levels. In contrast, thyroid hormone synthesizing enzyme, peroxidase, mRNA levels increased fivefold after coculture with TSH and TRAb, even though DNA poly β activity and mRNA levels are already significantly higher in Graves' disease thyroid tissues, compared with normal thyroid tissue. DISCUSSION These results indicate that DNA poly β expression in Graves' disease thyroid cells may be maximally activated or plateau in response to thyroid-stimulating immunoglobulins, or that the activation of to poly β expression may occur via pathways other than the G protein and cyclic AMP system.
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Affiliation(s)
- N Hayakawa
- Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| | - Y Sato
- Faculty of Agriculture, Nagoya University, Nagoya, 466-8550, Japan
| | - A Nagasaka
- Department of Internal Medicine, Fujita Health University School of Medicine, Toyoake, Aichi, 470-1192, Japan
| | - Y Mano
- Fujita Health University, Toyoake, Aichi, 470-1192, Japan.
| | - T Nagasaka
- Department of Obstetrics and Gynecology, Faculty of Medicine, University of Tokyo, Tokyo, 113-8655, Japan
| | - A Nakai
- Nakai Clinic, Chita, Aichi, 478-0041, Japan
| | - K Iwase
- Department of Surgery, School of Medicine, Fujita Health University, Toyoake, Aichi, 470-1192, Japan
| | - S Yoshida
- Laboratory of Cancer Cell Biology, Research Institute for Disease Mechanism and Control , Nagoya University School of Medicne, Nagoya University, Nagoya, 466-8550, Japan
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Hishinuma Y, Tanaka T, Shinkawa T, Murakami S, Matsuda K, Watanabe T, Nagasaka T, Sagara A, Muroga T. Formation of Double Oxide Insulator Coating for an Advanced Breeding Blanket. Fusion Science and Technology 2017. [DOI: 10.13182/fst13-762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Hishinuma
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu, 509-5292 Japan
| | - T. Tanaka
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu, 509-5292 Japan
| | - T. Shinkawa
- University of Toyama, Graduate School of Science and Engineering 3190, Gofuku, Toyama, 930-8555 Japan
| | - S. Murakami
- University of Toyama, Graduate School of Science and Engineering 3190, Gofuku, Toyama, 930-8555 Japan
| | - K. Matsuda
- University of Toyama, Graduate School of Science and Engineering 3190, Gofuku, Toyama, 930-8555 Japan
| | - T. Watanabe
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu, 509-5292 Japan
| | - T. Nagasaka
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu, 509-5292 Japan
| | - A. Sagara
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu, 509-5292 Japan
| | - T. Muroga
- National Institute for Fusion Science, 322-6, Oroshi-cho, Toki, Gifu, 509-5292 Japan
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38
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Ito K, Kadoya N, Nakajima Y, Saito M, Sato K, Nagasaka T, Yamanaka K, Dobashi S, Takeda K, Matsushita H, Jingu K. Feasibility of a Direct-Conversion Method from Magnetic Susceptibility to Relative Electron Density for Radiation Therapy Treatment Planning. ACTA ACUST UNITED AC 2017. [DOI: 10.4236/ijmpcero.2017.63023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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39
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Nagasaka T, Nyuya A, Toshima T, Kawai T, Yasui K, Kimura K, Mori Y, Umeda Y, Kishimoto H, Fujiwara T. 53P Update results of a novel assay for the detection of methylated CpGs from sputum to screen patients with lung cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw574.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Watanabe H, Yamasaki K, Higashijima A, Taguma H, Nagasaka T, Muroga T. Microstructural changes of Y-doped V-4Cr-4Ti alloys after ion and neutron irradiation. Nuclear Materials and Energy 2016. [DOI: 10.1016/j.nme.2016.06.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Tsisar V, Nagasaka T, Flem ML, Yeliseyeva O, Konys J, Muroga T. Effect of post-weld heat treatment on microstructure, hardness and low-temperature impact toughness of electron beam welds of NIFS-HEAT-2 and CEA-J57 heats of V–4Ti–4Cr alloy. Nuclear Materials and Energy 2016. [DOI: 10.1016/j.nme.2016.04.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tanioka H, Yamashita K, Tsuruta A, Tsuji A, Nagasaka T, Okumura H, Oka Y, Inukai M, Yamakawa T, Yamatsuji T, Yoshimitsu M, Toyota K, Yamano T, Okajima M. P-053 Updated analysis of induction & maintenance adjuvant chemotherapy with 3-month oxaliplatin-based regimen followed by 3 months capecitabine in patients with stage III and high-risk stage II colorectal cancer :(JSWOG C2). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.51] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Tanioka H, Nagasaka T, Asano M, Ikeda K, Yoshida R, Waki N, Ishizaki M, Yamashita K. P-054 The clinical predictor of antitumor efficacy of cetuximab based regimen in first-line therapy to unresectable metastatic colorectal cancer. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw199.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Ito K, Kadoya N, Chiba M, Sato K, Nagasaka T, Yamanaka K, Dobashi S, Takeda K, Matsushita H, Jingu K. SU-F-I-24: Feasibility of Magnetic Susceptibility to Relative Electron Density Conversion Method for Radiation Therapy. Med Phys 2016. [DOI: 10.1118/1.4955852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Kawai T, Nagasaka T, Takehara Y, Umeda Y, Fuji T, Taniguchi F, Kimura K, Toshima T, Yasui K, Mori Y, Kishimoto H, Toyooka S, Goel A, Fujiwara T. 1111 Non-invasive detection of methylated CpGs from sputum can predict patients with lung cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30493-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Fuji T, Nagasaka T, Umeda Y, Mori Y, Kawai T, Taniguchi F, Kimura K, Toshima T, Yasui K, Goel A, Fujiwara T. 819 Detection of circulating Ago2-miRNAs predict tumor response to anti-tumor therapies. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30408-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Taniguchi F, Nagasaka T, Takehara Y, Umeda Y, Mori Y, Kawai T, Fuji T, Toshima T, Kimura K, Yasui K, Goel A, Fujiwara T. 2021 Systematic genetic analysis of familial adenomatous polyposis and lynch syndrome. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30944-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Tanioka H, Yamashita K, Tsuji A, Okumura H, Oka Y, Tsuruta A, Inukai M, Yamakawa T, Yamatsuji T, Yoshimitsu M, Toyota K, Yamano T, Yamamoto Y, Nagasaka T, Okajima M. P-246 Feasibility study of sequential adjuvant chemotherapy with three months oxaliplatin-based regimen followed by three months capecitabine in patients with stage III and high risk stage II colorectal cancer: (JSWOG C2). Ann Oncol 2015. [DOI: 10.1093/annonc/mdv233.243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nishiura M, Doi K, Taniike A, Matsuki T, Shimazoe K, Mushiake T, Yoshino M, Nagasaka T, Fujimoto Y, Fujioka K, Tanaka T, Kisaki M, Yamaoka H, Matsumoto Y, Wada M. Ion-induced gamma-ray detection of fast ions escaping from fusion plasmas. Rev Sci Instrum 2014; 85:11E804. [PMID: 25430369 DOI: 10.1063/1.4886764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A 12 × 12 pixel detector has been developed and used in a laboratory experiment for lost fast-ion diagnostics. With gamma rays in the MeV range originating from nuclear reactions (9)Be(α, nγ)(12)C, (9)Be(d, nγ)(12)C, and (12)C(d, pγ)(13)C, a high purity germanium (HPGe) detector measured a fine-energy-resolved spectrum of gamma rays. The HPGe detector enables the survey of background-gamma rays and Doppler-shifted photo peak shapes. In the experiments, the pixel detector produces a gamma-ray image reconstructed from the energy spectrum obtained from total photon counts of irradiation passing through the detector's lead collimator. From gamma-ray image, diagnostics are able to produce an analysis of the fast ion loss onto the first wall in principle.
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Affiliation(s)
- M Nishiura
- Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan
| | - K Doi
- Graduate School of Science and Engineering, Doshisha University, Kyotanabe 610-0321, Japan
| | - A Taniike
- Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan
| | - T Matsuki
- Graduate School of Maritime Sciences, Kobe University, Kobe 658-0022, Japan
| | - K Shimazoe
- Graduate School of Engineering, The University of Tokyo, Tokyo 113-8654, Japan
| | - T Mushiake
- Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8561, Japan
| | - M Yoshino
- Furukawa Co. Ltd., Tsukuba, Ibaraki 305-0856, Japan
| | - T Nagasaka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - Y Fujimoto
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
| | - K Fujioka
- Institute of Laser Engineering, Osaka University, Osaka 565-0871, Japan
| | - T Tanaka
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - M Kisaki
- National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
| | - H Yamaoka
- RIKEN SPring-8 center, RIKEN, Sayo, Hyogo 679-5148, Japan
| | - Y Matsumoto
- Tokushima Bunri University, Tokushima 770-8514, Japan
| | - M Wada
- Graduate School of Science and Engineering, Doshisha University, Kyotanabe 610-0321, Japan
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Zheng P, Nagasaka T, Muroga T, Chen J. Microstructures and mechanical properties of mechanically alloyed V–4Cr–4Ti alloy dispersion strengthened by nano-particles. Fusion Engineering and Design 2014. [DOI: 10.1016/j.fusengdes.2014.03.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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