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Takeshita T, Iwamoto T, Niikura N, Watanabe K, Kikawa Y, Kobayashi K, Iwakuma N, Okamura T, Tada H, Ozaki S, Okuno T, Toh U, Yamamoto Y, Tsuneizumi M, Ishiguro H, Masuda N, Saji S. Identifying prognostic biomarkers for palbociclib add-on therapy in fulvestrant-resistant breast cancer using cell-free DNA sequencing. ESMO Open 2024; 9:102385. [PMID: 38387111 PMCID: PMC11076976 DOI: 10.1016/j.esmoop.2024.102385] [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: 11/22/2023] [Revised: 01/18/2024] [Accepted: 01/22/2024] [Indexed: 02/24/2024] Open
Abstract
BACKGROUND The FUTURE trial (UMIN000029294) demonstrated the safety and efficacy of adding palbociclib after fulvestrant resistance in patients with hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) advanced and metastatic breast cancer (ABC/MBC). In this planned sub-study, cancer panel sequencing of cell-free DNA (cfDNA) was utilized to explore prognostic and predictive biomarkers for further palbociclib treatment following fulvestrant resistance. MATERIALS AND METHODS Herein, 149 cfDNA samples from 65 patients with fulvestrant-resistant disease were analysed at the time of palbociclib addition after fulvestrant resistance (baseline), on day 15 of cycle 1, and at the end of treatment using the assay for identifying diverse mutations in 34 cancer-related genes. RESULTS During the course of treatment, mutations in ESR1, PIK3CA, FOXA1, RUNX1, TBX3, and TP53 were the most common genomic alterations observed. Analysis of genomic mutations revealed that before fulvestrant introduction, baseline PIK3CA mutations were marginally lower in metastatic aromatase inhibitor (AI)-treated patients compared to adjuvant AI-treated patients (P = 0.063). Baseline PIK3CA mutations were associated with poorer progression-free survival [hazard ratio: 1.62, P = 0.04]. Comparative analysis between baseline and early-changing gene mutations identified poor prognostic factors including early-changing MAP3K1 mutations (hazard ratio: 4.66, P = 0.04), baseline AR mutations (hazard ratio: 3.53, P = 0.04), and baseline PIK3CA mutations (hazard ratio: 3.41, P = 0.02). Notably, the relationship between ESR1 mutations and mutations in PIK3CA, MAP3K1, and TP53 weakened as treatment progressed. Instead, PIK3CA mutations became correlated with TP53 and FOXA1 mutations. CONCLUSIONS Cancer panel testing for cfDNA identified prognostic and predictive biomarkers for palbociclib add-on therapy after acquiring fulvestrant resistance in patients with HR+/HER2- ABC/MBC.
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Affiliation(s)
- T Takeshita
- Department of Breast and Endocrine Surgery, Kumamoto City Hospital, Kumamoto.
| | - T Iwamoto
- Department of Breast and Thyroid Surgery, Kawasaki Medical School Hospital, Kurashiki
| | - N Niikura
- Department of Breast Oncology, Tokai University School of Medicine, Isehara, Kanagawa
| | - K Watanabe
- Department of Breast Surgery, Hokkaido Cancer Center, Sapporo, Hokkaido
| | - Y Kikawa
- Department of Breast Surgery, Kansai Medical University Hospital, Hirakata, Osaka
| | - K Kobayashi
- Department of Medical Oncology, Saitama Red Cross Hospital, Chuo-ku, Saitama
| | - N Iwakuma
- Breast Center, Department of Breast Surgery, NHO Kyushu Medical Center, Fukuoka
| | - T Okamura
- Department of Breast Oncology, Tokai University School of Medicine, Isehara, Kanagawa
| | - H Tada
- Division of Breast and Endocrine Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi
| | - S Ozaki
- Department of Gastrointestinal and Breast Surgery, Hiroshima Prefectural Hospital, Hiroshima
| | - T Okuno
- Department of Breast Surgery, Kobe City Nishi-Kobe Medical Center, Kobe, Hyogo
| | - U Toh
- Department of Breast Surgery, Kurume University Hospital, Kurume, Fukuoka
| | - Y Yamamoto
- Department of Breast and Endocrine Surgery, Kumamoto University Hospital, Kumamoto
| | - M Tsuneizumi
- Department of Breast Surgery, Shizuoka General Hospital, Shizuoka
| | - H Ishiguro
- Breast Oncology Service, Saitama Medical University International Medical Center, Hidaka, Saitama
| | - N Masuda
- Department of Breast and Endocrine Surgery, Nagoya University Graduate School of Medicine, Nagoya
| | - S Saji
- Department of Medical Oncology, Fukushima Medical University, School of Medicine, Fukushima, Japan
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Nakamoto T, Yamashita H, Jinnouchi H, Nawa K, Imae T, Takenaka S, Aoki A, Ohta T, Ozaki S, Nozawa Y, Nakagawa K. Cone-beam computed-tomography-based delta-radiomic analysis for investigating prognostic power for esophageal squamous cell cancer patients undergoing concurrent chemoradiotherapy. Phys Med 2024; 117:103182. [PMID: 38086310 DOI: 10.1016/j.ejmp.2023.103182] [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: 07/21/2023] [Revised: 10/22/2023] [Accepted: 11/19/2023] [Indexed: 01/15/2024] Open
Abstract
PURPOSE To investigate the prognostic power of cone-beam computed-tomography (CBCT)-based delta-radiomics in esophageal squamous cell cancer (ESCC) patients treated with concurrent chemoradiotherapy (CCRT). METHODS We collected data from 26 ESCC patients treated with CCRT. CBCT images acquired at five time points (1st-5th week) per patient during CCRT were used in this study. Radiomic features were extracted from the five CBCT images on the gross tumor volumes. Then, 17 delta-radiomic feature sets derived from five types of calculations were obtained for all the cases. Leave-one-out cross-validation was applied to investigate the prognostic power of CBCT-based delta-radiomic features. Feature selection and construction of a prediction model using Coxnet were performed using training samples. Then, the test sample was classified into high or low risk in each cross-validation fold. Survival analysis for the two groups were performed to evaluate the prognostic power of the extracted CBCT-based delta-radiomic features. RESULTS Four delta-radiomic feature sets indicated significant differences between the high- and low-risk groups (p < 0.05). The highest C-index in the 17 delta-radiomic feature sets was 0.821 (95 % confidence interval, 0.735-0.907). That feature set had p-value of the log-rank test and hazard ratio of 0.003 and 4.940 (95 % confidence interval, 1.391-17.544), respectively. CONCLUSIONS We investigated the potential of using CBCT-based delta-radiomics for prognosis of ESCC patients treated with CCRT. It was demonstrated that delta-radiomic feature sets based on the absolute value of relative difference obtained from the early to the middle treatment stages have high prognostic power for ESCC.
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Affiliation(s)
- Takahiro Nakamoto
- Department of Biological Science and Engineering, Faculty of Health Sciences, Hokkaido University, N12-W5, Kita-ku, Sapporo, Hokkaido 060-0812, Japan; Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Hideomi Yamashita
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Haruka Jinnouchi
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Kanabu Nawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Toshikazu Imae
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Shigeharu Takenaka
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Atsushi Aoki
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Takeshi Ohta
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Sho Ozaki
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo, Hirosaki, Aomori 036-8561, Japan
| | - Yuki Nozawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Keiichi Nakagawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
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Ozaki S, Ishigami G, Otsuki M, Miyamoto H, Wada K, Watanabe Y, Nishino T, Kojima H, Soda K, Nakao Y, Sutoh M, Maeda T, Kobayashi T. Publisher Correction: Granular flow experiment using artificial gravity generator at International Space Station. NPJ Microgravity 2023; 9:79. [PMID: 37739962 PMCID: PMC10517004 DOI: 10.1038/s41526-023-00325-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023] Open
Affiliation(s)
- S Ozaki
- Yokohama National University, Yokohama, Japan.
| | | | - M Otsuki
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | | | - K Wada
- Chiba Institute of Technology, Chiba, Japan
| | - Y Watanabe
- Yokohama National University, Yokohama, Japan
| | - T Nishino
- Yokohama National University, Yokohama, Japan
| | - H Kojima
- Keio University, Yokohama, Japan
| | - K Soda
- Keio University, Yokohama, Japan
| | - Y Nakao
- Keio University, Yokohama, Japan
| | - M Sutoh
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Maeda
- Tokyo University of Agriculture and Technology, Fuchu, Japan
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Ozaki S, Ishigami G, Otsuki M, Miyamoto H, Wada K, Watanabe Y, Nishino T, Kojima H, Soda K, Nakao Y, Sutoh M, Maeda T, Kobayashi T. Granular flow experiment using artificial gravity generator at International Space Station. NPJ Microgravity 2023; 9:61. [PMID: 37553360 PMCID: PMC10409782 DOI: 10.1038/s41526-023-00308-w] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 07/19/2023] [Indexed: 08/10/2023] Open
Abstract
Studying the gravity-dependent characteristics of regolith, fine-grained granular media covering extra-terrestrial bodies is essential for the reliable design and analysis of landers and rovers for space exploration. In this study, we propose an experimental approach to examine a granular flow under stable artificial gravity conditions for a long duration generated by a centrifuge at the International Space Station. We also perform a discrete element simulation of the granular flow in both artificial and natural gravity environments. The simulation results verify that the granular flows in artificial and natural gravity are consistent. Further, regression analysis of the experimental results reveals that the mass flow rate of granular flow quantitatively follows a well-known physics-based law with some deviations under low-gravity conditions, implying that the bulk density of the granular media decreases with gravity. This insight also indicates that the bulk density considered in simulation studies of space probes under low-gravity conditions needs to be tuned for their reliable design and analysis.
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Affiliation(s)
- S Ozaki
- Yokohama National University, Yokohama, Japan.
| | | | - M Otsuki
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | | | - K Wada
- Chiba Institute of Technology, Chiba, Japan
| | - Y Watanabe
- Yokohama National University, Yokohama, Japan
| | - T Nishino
- Yokohama National University, Yokohama, Japan
| | - H Kojima
- Keio University, Yokohama, Japan
| | - K Soda
- Keio University, Yokohama, Japan
| | - Y Nakao
- Keio University, Yokohama, Japan
| | - M Sutoh
- Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - T Maeda
- Tokyo University of Agriculture and Technology, Fuchu, Japan
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Watanabe K, Niikura N, Kikawa Y, Oba M, Kobayashi K, Tada H, Ozaki S, Toh U, Yamamoto Y, Tsuneizumi M, Okuno T, Iwakuma N, Takeshita T, Iwamoto T, Ishiguro H, Masuda N, Saji S. 228P Fulvestrant with additional palbociclib in advanced or metastatic hormone receptor-positive HER2-negative breast cancer after progression to fulvestrant monotherapy: JBCRG- M07 (FUTURE trial). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.267] [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: 11/01/2022] Open
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Ozaki S, Kaji S, Nawa K, Imae T, Aoki A, Nakamoto T, Ohta T, Nozawa Y, Yamashita H, Haga A, Nakagawa K. Training of deep cross-modality conversion models with a small dataset, and their application in megavoltage CT to kilovoltage CT conversion. Med Phys 2022; 49:3769-3782. [PMID: 35315529 DOI: 10.1002/mp.15626] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 09/17/2021] [Revised: 02/21/2022] [Accepted: 03/14/2022] [Indexed: 11/06/2022] Open
Abstract
PURPOSE In recent years, deep-learning-based image processing has emerged as a valuable tool for medical imaging owing to its high performance. However, the quality of deep-learning-based methods heavily relies on the amount of training data; the high cost of acquiring a large dataset is a limitation to their utilization in medical fields. Herein, based on deep learning, we developed a computed tomography (CT) modality conversion method requiring only a few unsupervised images. METHODS The proposed method is based on CycleGAN with several extensions tailored for CT images, which aims at preserving the structure in the processed images and reducing the amount of training data. This method was applied to realize the conversion of megavoltage computed tomography (MVCT) to kilovoltage computed tomography (kVCT) images. Training was conducted using several datasets acquired from patients with head and neck cancer. The size of the datasets ranged from 16 slices (two patients) to 2745 slices (137 patients) for MVCT and 2824 slices (98 patients) for kVCT. RESULTS The required size of the training data was found to be as small as a few hundred slices. By statistical and visual evaluations, the quality improvement and structure preservation of the MVCT images converted by the proposed model were investigated. As a clinical benefit, it was observed by medical doctors that the converted images enhanced the precision of contouring. CONCLUSIONS We developed an MVCT to kVCT conversion model based on deep learning, which can be trained using only a few hundred unpaired images. The stability of the model against changes in data size was demonstrated. This study promotes the reliable use of deep learning in clinical medicine by partially answering commonly asked questions, such as "Is our data sufficient?" and "How much data should we acquire?" This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Sho Ozaki
- Graduate School of Medicine, University of Tokyo, Tokyo, 113-8655, Japan
| | - Shizuo Kaji
- Institute of Mathematics for Industry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kanabu Nawa
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Toshikazu Imae
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Atsushi Aoki
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Takahiro Nakamoto
- Department of Biological Science and Engineering, Faculty of Health Sciences, Hokkaido University, N12-W5, Kita-ku, Sapporo, Hokkaido, 060-0812, Japan
| | - Takeshi Ohta
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Yuki Nozawa
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Hideomi Yamashita
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Akihiro Haga
- Graduate School of Biomedical Science, Tokushima University, Tokushima, 770-8503, Japan
| | - Keiichi Nakagawa
- Graduate School of Medicine, University of Tokyo, Tokyo, 113-8655, Japan
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Ozaki S, Kaji S, Nawa K, Imae T, Aoki A, Nakamoto T, Ohta T, Nozawa Y, Haga A, Nakagawa K. PD-0755 Training modality conversion models with small data and its application to MVCT to kVCT conversion. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)07034-1] [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: 10/20/2022]
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Ogita M, Yamashita H, Nozawa Y, Ozaki S, Sawayanagi S, Ohta T, Nakagawa K. Phase II study of stereotactic body radiotherapy with hydrogel spacer for prostate cancer: acute toxicity and propensity score-matched comparison. Radiat Oncol 2021; 16:107. [PMID: 34118956 PMCID: PMC8199395 DOI: 10.1186/s13014-021-01834-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 04/26/2021] [Accepted: 06/01/2021] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The efficacy of a hydrogel spacer in stereotactic body radiotherapy (SBRT) has not been clarified. We evaluated the safety and efficacy of SBRT in combination with a hydrogel spacer for prostate cancer. METHODS This is a prospective single-center, single-arm phase II study. Prostate cancer patients without lymph node or distant metastasis were eligible. All patients received a hydrogel spacer insertion, followed by SBRT of 36.25 Gy in 5 fractions with volumetric modulated arc therapy. The primary endpoint was physician-assessed acute gastrointestinal (GI) toxicity within 3 months. The secondary endpoints were physician-assessed acute genitourinary (GU) toxicity, patient-reported outcomes evaluated by the EPIC and FACT-P questionnaires, and dosimetric comparison. We used propensity score-matched analyses to compare patients with the hydrogel spacer with those without the spacer. The historical data of the control without a hydrogel spacer was obtained from our hospital's electronic records. RESULTS Forty patients were enrolled between February 2017 and July 2018. A hydrogel spacer significantly reduced the dose to the rectum. Grade 2 acute GI and GU toxicity occurred in seven (18%) and 17 (44%) patients. The EPIC bowel and urinary summary score declined from the baseline to the first month (P < 0.01, < 0.01), yet it was still significantly lower in the third month (P < 0.01, P = 0.04). For propensity score-matched analyses, no significant differences in acute GI and GU toxicity were observed between the two groups. The EPIC bowel summary score was significantly better in the spacer group at 1 month (82.2 in the spacer group and 68.5 in the control group). CONCLUSIONS SBRT with a hydrogel spacer had the dosimetric benefits of reducing the rectal doses. The use of the hydrogel spacer did not reduce physician-assessed acute toxicity, but it improved patient-reported acute bowel toxicity. TRIAL REGISTRATION Trial registration: UMIN-CTR, UMIN000026213. Registered 19 February 2017, https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000029385 .
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Affiliation(s)
- Mami Ogita
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan.
| | - Hideomi Yamashita
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Yuki Nozawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Sho Ozaki
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Subaru Sawayanagi
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Takeshi Ohta
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
| | - Keiichi Nakagawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyoku, Tokyo, 113-8655, Japan
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Ozaki S, Haga A, Chao E, Maurer C, Nawa K, Ohta T, Nakamoto T, Nozawa Y, Magome T, Nakano M, Nakagawa K. Fast Statistical Iterative Reconstruction for Mega-voltage Computed Tomography. J Med Invest 2020; 67:30-39. [PMID: 32378615 DOI: 10.2152/jmi.67.30] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Statistical iterative reconstruction is expected to improve the image quality of computed tomography (CT). However, one of the challenges of iterative reconstruction is its large computational cost. The purpose of this review is to summarize a fast iterative reconstruction algorithm by optimizing reconstruction parameters. Megavolt projection data was acquired from a TomoTherapy system and reconstructed using in-house statistical iterative reconstruction algorithm. Total variation was used as the regularization term and the weight of the regularization term was determined by evaluating signal-to-noise ratio (SNR), contrast-to-noise ratio (CNR), and visual assessment of spatial resolution using Gammex and Cheese phantoms. Gradient decent with an adaptive convergence parameter, ordered subset expectation maximization (OSEM), and CPU/GPU parallelization were applied in order to accelerate the present reconstruction algorithm. The SNR and CNR of the iterative reconstruction were several times better than that of filtered back projection (FBP). The GPU parallelization code combined with the OSEM algorithm reconstructed an image several hundred times faster than a CPU calculation. With 500 iterations, which provided good convergence, our method produced a 512 × 512 pixel image within a few seconds. The image quality of the present algorithm was much better than that of FBP for patient data. J. Med. Invest. 67 : 30-39, February, 2020.
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Affiliation(s)
- Sho Ozaki
- Department of Radiology, The University of Tokyo Hospital, Japan
| | - Akihiro Haga
- Graduate School of Biomedical Science, Tokushima University, Japan
| | | | | | - Kanabu Nawa
- Department of Radiology, The University of Tokyo Hospital, Japan
| | - Takeshi Ohta
- Department of Radiology, The University of Tokyo Hospital, Japan
| | | | - Yuki Nozawa
- Department of Radiology, The University of Tokyo Hospital, Japan
| | - Taiki Magome
- Radiological Science, Komazawa University, Tokyo, Japan
| | - Masahiro Nakano
- Radiation Oncology Department, Cancer Institute Hospital, Japanese Foundation for Cancer Research, Tokyo, Japan
| | - Keiichi Nakagawa
- Department of Radiology, The University of Tokyo Hospital, Japan
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Aoki S, Yamashita H, Takahashi W, Nawa K, Ota T, Imae T, Ozaki S, Nozawa Y, Nakajima J, Sato M, Anraku M, Nitadori J, Karasaki T, Abe O, Nakagawa K. Salvage stereotactic body radiotherapy for post-operative oligo-recurrence of non-small cell lung cancer: A single-institution analysis of 59 patients. Oncol Lett 2020; 19:2695-2704. [PMID: 32218820 PMCID: PMC7068670 DOI: 10.3892/ol.2020.11407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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] [Received: 08/06/2019] [Accepted: 11/14/2019] [Indexed: 12/11/2022] Open
Abstract
A standard treatment for patients with early-stage non-small cell lung cancer (NSCLC) who undergo surgery, and subsequently develop local failure or intrathoracic oligo-recurrence, has not yet been established. The present study aimed to assess the feasibility of stereotactic body radiotherapy (SBRT) for this subgroup of patients. Consequently, a retrospective analysis was conducted of patients with NSCLC recurrence who were treated with SBRT, and previously underwent curative surgical resection between October 2011 and October 2016. Post-SBRT survival [overall survival (OS); progression-free survival (PFS); and local control (LC)] and toxicity were analyzed. Prognostic factors for OS were identified using univariate and multivariate analysis. A total of 52 patients and 59 tumors were analyzed. The median follow-up time was 25 months (35 months for surviving patients), and median OS following salvage SBRT was 32 months. The 1- and 3-year OS rates were 84.4 and 67.8%, respectively. 1- and 3-year PFS rates were 80.8 and 58.7%, respectively. Only 4 patients (7.7%) developed local failure. Median LC was 71 months and 1- and 3-year LC rate were 97.9 and 94.9%, respectively. A total of 4 patients experienced grade 3 or higher adverse events (AEs) and two experienced grade 5 AEs (pneumonitis and hemoptysis). Central tumor location and the possibility of re-operation were independent prognostic factors for OS. The present study indicated that post-operative salvage SBRT is a promising therapeutic option for patients with NSCLC with locoregional or intrathoracic oligo-recurrence. We regard toxicity was also acceptable. However, further research is required on the appropriate selection of subjects, and stratification of the analysis by certain risk factors would increase the accuracy of the conclusions.
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Affiliation(s)
- Shuri Aoki
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Hideomi Yamashita
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Wataru Takahashi
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Kanabu Nawa
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Takeshi Ota
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Toshikazu Imae
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Sho Ozaki
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Yuki Nozawa
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Jun Nakajima
- Department of Thoracic Surgery, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Masaaki Sato
- Department of Thoracic Surgery, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Masaki Anraku
- Department of Thoracic Surgery, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Junichi Nitadori
- Department of Thoracic Surgery, University of Tokyo Hospital, Tokyo 113-8655, Japan.,Department of Thoracic Surgery, Tokyo Metropolitan Geriatric Hospital, Tokyo 173-0015, Japan
| | - Takahiro Karasaki
- Department of Thoracic Surgery, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Osamu Abe
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Keiichi Nakagawa
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
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Kida S, Kaji S, Nawa K, Imae T, Nakamoto T, Ozaki S, Ohta T, Nozawa Y, Nakagawa K. Visual enhancement of Cone-beam CT by use of CycleGAN. Med Phys 2020; 47:998-1010. [PMID: 31840269 DOI: 10.1002/mp.13963] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [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: 06/26/2019] [Revised: 11/27/2019] [Accepted: 11/27/2019] [Indexed: 02/05/2023] Open
Abstract
PURPOSE Cone-beam computed tomography (CBCT) offers advantages over conventional fan-beam CT in that it requires a shorter time and less exposure to obtain images. However, CBCT images suffer from low soft-tissue contrast, noise, and artifacts compared to conventional fan-beam CT images. Therefore, it is essential to improve the image quality of CBCT. METHODS In this paper, we propose a synthetic approach to translate CBCT images with deep neural networks. Our method requires only unpaired and unaligned CBCT images and planning fan-beam CT (PlanCT) images for training. The CBCT images and PlanCT images may be obtained from other patients as long as they are acquired with the same scanner settings. Once trained, three-dimensionally reconstructed CBCT images can be directly translated into high-quality PlanCT-like images. RESULTS We demonstrate the effectiveness of our method with images obtained from 20 prostate patients, and provide a statistical and visual comparison. The image quality of the translated images shows substantial improvement in voxel values, spatial uniformity, and artifact suppression compared to those of the original CBCT. The anatomical structures of the original CBCT images were also well preserved in the translated images. CONCLUSIONS Our method produces visually PlanCT-like images from CBCT images while preserving anatomical structures.
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Affiliation(s)
- Satoshi Kida
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Shizuo Kaji
- Institute of Mathematics for Industry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.,JST PRESTO, Kawaguchi, Japan
| | - Kanabu Nawa
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Toshikazu Imae
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Takahiro Nakamoto
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Sho Ozaki
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Takeshi Ohta
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Yuki Nozawa
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
| | - Keiichi Nakagawa
- Department of Radiology, University of Tokyo Hospital, Tokyo, 113-8655, Japan
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Imae T, Kaji S, Kida S, Matsuda K, Takenaka S, Aoki A, Nakamoto T, Ozaki S, Nawa K, Yamashita H, Nakagawa K, Abe O. [Improvement in Image Quality of CBCT during Treatment by Cycle Generative Adversarial Network]. Nihon Hoshasen Gijutsu Gakkai Zasshi 2020; 76:1173-1184. [PMID: 33229847 DOI: 10.6009/jjrt.2020_jsrt_76.11.1173] [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: 06/11/2023]
Abstract
PURPOSE Volumetric modulated arc therapy (VMAT) can acquire projection images during rotational irradiation, and cone-beam computed tomography (CBCT) images during VMAT delivery can be reconstructed. The poor quality of CBCT images prevents accurate recognition of organ position during the treatment. The purpose of this study was to improve the image quality of CBCT during the treatment by cycle generative adversarial network (CycleGAN). METHOD Twenty patients with clinically localized prostate cancer were treated with VMAT, and projection images for intra-treatment CBCT (iCBCT) were acquired. Synthesis of PCT (SynPCT) with improved image quality by CycleGAN requires only unpaired and unaligned iCBCT and planning CT (PCT) images for training. We performed visual and quantitative evaluation to compare iCBCT, SynPCT and PCT deformable image registration (DIR) to confirm the clinical usefulness. RESULT We demonstrated suitable CycleGAN networks and hyperparameters for SynPCT. The image quality of SynPCT improved visually and quantitatively while preserving anatomical structures of the original iCBCT. The undesirable deformation of PCT was reduced when SynPCT was used as its reference instead of iCBCT. CONCLUSION We have performed image synthesis with preservation of organ position by CycleGAN for iCBCT and confirmed the clinical usefulness.
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Affiliation(s)
| | - Shizuo Kaji
- Department of Radiology, University of Tokyo Hospital
- Institute of Mathematics for Industry, Kyushu University
| | - Satoshi Kida
- Department of Radiology, University of Tokyo Hospital
| | | | | | - Atsushi Aoki
- Department of Radiology, University of Tokyo Hospital
| | | | - Sho Ozaki
- Department of Radiology, University of Tokyo Hospital
| | - Kanabu Nawa
- Department of Radiology, University of Tokyo Hospital
| | | | | | - Osamu Abe
- Department of Radiology, University of Tokyo Hospital
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Nakamoto T, Takahashi W, Haga A, Takahashi S, Kiryu S, Nawa K, Ohta T, Ozaki S, Nozawa Y, Tanaka S, Mukasa A, Nakagawa K. Prediction of malignant glioma grades using contrast-enhanced T1-weighted and T2-weighted magnetic resonance images based on a radiomic analysis. Sci Rep 2019; 9:19411. [PMID: 31857632 PMCID: PMC6923390 DOI: 10.1038/s41598-019-55922-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 12/04/2019] [Indexed: 01/07/2023] Open
Abstract
We conducted a feasibility study to predict malignant glioma grades via radiomic analysis using contrast-enhanced T1-weighted magnetic resonance images (CE-T1WIs) and T2-weighted magnetic resonance images (T2WIs). We proposed a framework and applied it to CE-T1WIs and T2WIs (with tumor region data) acquired preoperatively from 157 patients with malignant glioma (grade III: 55, grade IV: 102) as the primary dataset and 67 patients with malignant glioma (grade III: 22, grade IV: 45) as the validation dataset. Radiomic features such as size/shape, intensity, histogram, and texture features were extracted from the tumor regions on the CE-T1WIs and T2WIs. The Wilcoxon-Mann-Whitney (WMW) test and least absolute shrinkage and selection operator logistic regression (LASSO-LR) were employed to select the radiomic features. Various machine learning (ML) algorithms were used to construct prediction models for the malignant glioma grades using the selected radiomic features. Leave-one-out cross-validation (LOOCV) was implemented to evaluate the performance of the prediction models in the primary dataset. The selected radiomic features for all folds in the LOOCV of the primary dataset were used to perform an independent validation. As evaluation indices, accuracies, sensitivities, specificities, and values for the area under receiver operating characteristic curve (or simply the area under the curve (AUC)) for all prediction models were calculated. The mean AUC value for all prediction models constructed by the ML algorithms in the LOOCV of the primary dataset was 0.902 ± 0.024 (95% CI (confidence interval), 0.873-0.932). In the independent validation, the mean AUC value for all prediction models was 0.747 ± 0.034 (95% CI, 0.705-0.790). The results of this study suggest that the malignant glioma grades could be sufficiently and easily predicted by preparing the CE-T1WIs, T2WIs, and tumor delineations for each patient. Our proposed framework may be an effective tool for preoperatively grading malignant gliomas.
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Affiliation(s)
- Takahiro Nakamoto
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
- Research Fellow of Japan Society for the Promotion of Science, 5-3-1 Kojimachi, Chiyoda-ku, Tokyo, 102-0083, Japan
| | - Wataru Takahashi
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan.
| | - Akihiro Haga
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
- Department of Medical Image Informatics, Tokushima University, 3-18-15 Kuramoto-cho, Tokushima, 770-8503, Japan
| | - Satoshi Takahashi
- Department of Neurosurgery, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Shigeru Kiryu
- Department of Radiology, International University of Health and Welfare Hospital, 537-3 Iguchi, Nasushiobara, Tochigi, 329-2763, Japan
| | - Kanabu Nawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Takeshi Ohta
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Sho Ozaki
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Yuki Nozawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Shota Tanaka
- Department of Neurosurgery, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
| | - Akitake Mukasa
- Department of Neurosurgery, Graduate School of Medical Sciences, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan
| | - Keiichi Nakagawa
- Department of Radiology, The University of Tokyo Hospital, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan
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Katengeza EW, Ozaki S, Kato T, Kakefu T, Iimoto T. PRELIMINARY EVALUATION OF A HAND-MADE RADIATION MONITOR'S POTENTIAL FOR PROVIDING ENERGY INFORMATION AS AN ADDITIONAL FEATURE FOR SECONDARY LEVEL RADIATION EDUCATION. Radiat Prot Dosimetry 2019; 184:535-538. [PMID: 31330006 DOI: 10.1093/rpd/ncz076] [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] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 04/03/2019] [Indexed: 06/10/2023]
Abstract
A hand-made air GM counter was developed using simple, low-cost and easily available materials. The detector was successful in demonstrating the inverse square law, shielding effect, and determining the half-life of thoron gas. The possibility of using the tube design as a simple proportional counter to provide energy information has been explored and preliminary experiment and simulation results appear to agree at low energy. The energy deposition characteristics for an internally placed alpha-emitting Rn-220 were simulated using Particle and Heavy Ion Transport code System (PHITS).
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Affiliation(s)
- E W Katengeza
- Department of Environment Systems, Graduate School of Frontier Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
| | - S Ozaki
- Japan Science Foundation/Science Museum, Kitanomaru-kouen, 2-1 Chiyoda-ku, Tokyo, Japan
| | - T Kato
- Japan Science Foundation/Science Museum, Kitanomaru-kouen, 2-1 Chiyoda-ku, Tokyo, Japan
| | - T Kakefu
- Japan Science Foundation/Science Museum, Kitanomaru-kouen, 2-1 Chiyoda-ku, Tokyo, Japan
| | - T Iimoto
- Department of Environment Systems, Graduate School of Frontier Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
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Aoki S, Yamashita H, Takahashi W, Nawa K, Ota T, Nozawa Y, Ozaki S, Nakamoto T, Nakagawa K. EP-1360 Salvage SBRT for postoperative recurrence of NSCLC. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31780-3] [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: 11/15/2022]
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Schulz A, Ozaki S, Murin P, Cho MY, Musci M, Romanchenko O, Photiadis J. Single-Center Experience with the Matrix Patch and Its Application in Congenital Heart Surgery. Thorac Cardiovasc Surg 2019. [DOI: 10.1055/s-0039-1678840] [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: 10/27/2022]
Affiliation(s)
- A. Schulz
- Deutsches Herzzentrum Berlin, Berlin, Germany
| | - S. Ozaki
- Deutsches Herzzentrum Berlin, Berlin, Germany
| | - P. Murin
- Deutsches Herzzentrum Berlin, Berlin, Germany
| | - M.-Y. Cho
- Deutsches Herzzentrum Berlin, Berlin, Germany
| | - M. Musci
- Deutsches Herzzentrum Berlin, Berlin, Germany
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Aoki S, Yamashita H, Haga A, Ota T, Takahashi W, Ozaki S, Nawa K, Imae T, Abe O, Nakagawa K. Stereotactic body radiotherapy for centrally-located lung tumors with 56 Gy in seven fractions: A retrospective study. Oncol Lett 2018; 16:4498-4506. [PMID: 30214585 PMCID: PMC6126178 DOI: 10.3892/ol.2018.9188] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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] [Received: 02/03/2018] [Accepted: 07/03/2018] [Indexed: 12/25/2022] Open
Abstract
Stereotactic body radiotherapy (SBRT) for centrally-located lung tumors remains a challenge because of the increased risk of treatment-related adverse events (AEs), and uncertainty around prescribing the optimal dose. The present study reported the results of central tumor SBRT with 56 Gy in 7 fractions (fr) at the University of Tokyo Hospital. A total of 35 cases that underwent SBRT with or without volumetric-modulated arc therapy consisting of 56 Gy/7 fr for central lung lesions between 2010 and 2016 at the University of Tokyo Hospital were reveiwed. A central lesion was defined as a tumor within 2 cm of the proximal bronchial tree (RTOG 0236 definition) or within 2 cm in all directions of any critical mediastinal structure. Local control (LC), overall survival (OS), and AEs were investigated. The Kaplan-Meier method was used to estimate LC and OS. AEs were scored per the Common Terminology Criteria for Adverse Events Version 4.0. Thirty-five patients with 36 central lung lesions were included. Fifteen lesions were primary non-small cell lung cancer (NSCLC), 13 were recurrences of NSCLC, and 8 had oligo-recurrences from other primaries. Median tumor diameter was 29 mm. Eighteen patients had had prior surgery. At a median follow-up of 13.1 months for all patients and 18.3 months in surviving patients, 22 patients had died, ten due to primary disease (4 NSCLC), while three were treatment-related. The 1- and 2-year OS were 57.3 and 40.4%, respectively, and median OS was 15.7 months. Local recurrence occurred in only two lesions. 1- and 2-year LC rates were both 96%. Nine patients experienced grade ≥3 toxicity, representing 26% of the cohort. Two of these were grade 5, one pneumonitis and one hemoptysis. Considering the background of the subject, tumor control of our central SBRT is promising, especially in primary NSCLC. However, the safety of SBRT to central lung cancer remains controversial.
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Affiliation(s)
- Shuri Aoki
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Hideomi Yamashita
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Akihiro Haga
- Medical and Dentistry Laboratory, University of Tokushima, Tokushima 770-8501, Japan
| | - Takeshi Ota
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Wataru Takahashi
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Sho Ozaki
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Kanabu Nawa
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Toshikazu Imae
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Osamu Abe
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
| | - Keiichi Nakagawa
- Department of Radiology, University of Tokyo Hospital, Tokyo 113-8655, Japan
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Shigekiyo T, Udaka K, Sekimoto E, Shibata H, Ozaki S, Takeda M, Aihara K. Inheritance of von Willebrand disease Vicenza in a Japanese family. Haemophilia 2018; 24:e131-e133. [PMID: 29578258 DOI: 10.1111/hae.13453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2018] [Indexed: 06/08/2023]
Affiliation(s)
- T Shigekiyo
- Department of Hematology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - K Udaka
- Department of Hematology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - E Sekimoto
- Department of Hematology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - H Shibata
- Department of Hematology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - S Ozaki
- Department of Hematology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - M Takeda
- Department of Ophthalmology, Tokushima Prefectural Central Hospital, Tokushima, Japan
| | - K Aihara
- Department of Hematology, Endocrinology and Metabolism, Institute of Biomedical Science, Tokushima University Graduated School, Tokushima, Japan
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Abstract
Background The enabler circulatory support system is a catheter pump which expels blood from the left or right ventricular cavity and provides pulsatile flow in the ascending aorta or pulmonary artery. It is driven by a bedside installed pulsatile driving console. The device can easily be implanted by a minimal invasive approach, similar to the Hemopump. Purpose To demonstrate the hemodynamic performance of this new intracardiac support system. Methods In a series of 9 sheep, hemodynamic evolutions were recorded in various conditions of myocardial contractility (the non-failing, the moderately failing and the severely failing heart). Heart failure was induced by injection of microspheres in the coronary arteries. Results Introduction of the cannula through the aortic valve was feasible in all cases. Pump flow by the enabler was gradually increased to a maximum of 3.5 L/min. Diastolic (and mean) aortic blood pressure is significantly increased in the non-failing and moderately failing condition (counterpulsation mode). In heart failure, cardiac output is significantly increased by the pump (p<0.0001). A drop in left atrial pressure (indicating unloading) is achieved in all conditions but reaches significant levels only during heart failure (p=0.0068). Conclusions This new circulatory support system contributes to stabilization of the circulation in the presence of cardiac unloading. In heart failure it actually supports the circulation by increasing cardiac output and perfusion pressure.
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Affiliation(s)
- Y. Nishimura
- Department of Cardiac Surgery, K. U. Leuven - Belgium
| | - B. Meyns
- Department of Cardiac Surgery, K. U. Leuven - Belgium
| | - S. Ozaki
- Department of Cardiac Surgery, K. U. Leuven - Belgium
| | - R. Racz
- Department of Cardiac Surgery, K. U. Leuven - Belgium
| | - P. Dohmen
- Department of Cardiac Surgery, K. U. Leuven - Belgium
| | - W. Flameng
- Department of Cardiac Surgery, K. U. Leuven - Belgium
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Hayama H, Suzuki M, Hashimoto G, Makino K, Ono T, Iijima R, Hara H, Hara H, Okazaki O, Hiroi Y, Moroi M, Ozaki S, Nakamura M. P2401Leaflet thrombosis after aortic valve reconstruction surgery using autologous pericardium. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2401] [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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Masuda Y, Takeuchi K, Kodama T, Fujisaki T, Imaizumi Y, Ohtsuka E, Ozaki S, Hasebe S, Asai H, Yakushijin Y. A RETROSPECTIVE STUDY OF THE DIAGNOSIS AND THE TREATMENT-ASSOCIATED MORTALITY OF PATIENTS WITH PRIMARY OCULAR ADNEXAL MUCOSA-ASSOCIATED LYMPHOID TISSUE (POA-MALT) LYMPHOMA IN JAPAN. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_131] [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: 11/08/2022]
Affiliation(s)
- Y. Masuda
- Department of Clinical Oncology; Ehime University Graduate School of Medicine; Tohon-shi Japan
| | - K. Takeuchi
- Cancer Center; Ehime University Hospital; Tohon-shi Japan
| | - T. Kodama
- Department of Ophthalmology; Matsuyama Red Cross Hospital; Matsuyama Japan
| | - T. Fujisaki
- Department of Hematology; Matsuyama Red Cross Hospital; Matsuyama Japan
| | - Y. Imaizumi
- Department of Hematology; Nagasaki University Hospital; Nagasaki Japan
| | - E. Ohtsuka
- Department of Hematology; Oita Prefectural Hospital; Oita Japan
| | - S. Ozaki
- Department of Hematology; Tokushima Prefectural Central Hospital; Tokushima Japan
| | - S. Hasebe
- Department of Clinical Oncology; Ehime University Graduate School of Medicine; Tohon-shi Japan
| | - H. Asai
- Cancer Center; Ehime University Hospital; Tohon-shi Japan
| | - Y. Yakushijin
- Department of Clinical Oncology; Ehime University Graduate School of Medicine; Tohon-shi Japan
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Tsuda N, Ozaki S, Nakazawa Y, Moriguchi T, Nomura Y, Kato N. Hand Motion Training System by Inducing Pressure Presentation. BIOMEDICAL ENGINEERING 2016. [DOI: 10.2316/p.2016.832-027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Bando H, Masuda N, Nakamura R, Kondo N, Kuroi K, Akiyoshi S, Ohtani S, Toshimi T, Inoue K, Yanagida Y, Ishiguro H, Shimizu S, Aogi K, Amano S, Ozaki S, Iguchi-Manaka A, Kasai H, Morita S, Kataoka T, Toi M. 1951 Impact of lapatinib (La) treatment duration and endocrine therapy (ET) addition on the efficacy of primary dual HER2 blockage with La and trastuzumab (T) for HER2+ breast cancer (BC) patients. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30899-1] [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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Yamasaki Y, Suzuki K, Akashi Y, Asari Y, Tsuchida K, Ooka S, Ozaki S, Yamada H. FRI0493 Improved Detection of Early Pulmonary Hypertension in Patients with Connective Tissue Diseases by Simple Exercise Doppler Echocardiography. Ann Rheum Dis 2015. [DOI: 10.1136/annrheumdis-2015-eular.3294] [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: 11/04/2022]
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Kitagawa Y, Mori Y, Komeda O, Ishii K, Hanayama R, Fujita K, Okihara S, Sekine T, Satoh N, Kurita T, Takagi M, Watari T, Kawashima T, Kan H, Nishimura Y, Sunahara A, Sentoku Y, Nakamura N, Kondo T, Fujine M, Azuma H, Motohiro T, Hioki T, Kakeno M, Miura E, Arikawa Y, Nagai T, Abe Y, Ozaki S, Noda A. Direct heating of a laser-imploded core by ultraintense laser-driven ions. Phys Rev Lett 2015; 114:195002. [PMID: 26024175 DOI: 10.1103/physrevlett.114.195002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Indexed: 06/04/2023]
Abstract
A novel direct core heating fusion process is introduced, in which a preimploded core is predominantly heated by energetic ions driven by LFEX, an extremely energetic ultrashort pulse laser. Consequently, we have observed the D(d,n)^{3}He-reacted neutrons (DD beam-fusion neutrons) with the yield of 5×10^{8} n/4π sr. Examination of the beam-fusion neutrons verified that the ions directly collide with the core plasma. While the hot electrons heat the whole core volume, the energetic ions deposit their energies locally in the core, forming hot spots for fuel ignition. As evidenced in the spectrum, the process simultaneously excited thermal neutrons with the yield of 6×10^{7} n/4π sr, raising the local core temperature from 0.8 to 1.8 keV. A one-dimensional hydrocode STAR 1D explains the shell implosion dynamics including the beam fusion and thermal fusion initiated by fast deuterons and carbon ions. A two-dimensional collisional particle-in-cell code predicts the core heating due to resistive processes driven by hot electrons, and also the generation of fast ions, which could be an additional heating source when they reach the core. Since the core density is limited to 2 g/cm^{3} in the current experiment, neither hot electrons nor fast ions can efficiently deposit their energy and the neutron yield remains low. In future work, we will achieve the higher core density (>10 g/cm^{3}); then hot electrons could contribute more to the core heating via drag heating. Together with hot electrons, the ion contribution to fast ignition is indispensable for realizing high-gain fusion. By virtue of its core heating and ignition, the proposed scheme can potentially achieve high gain fusion.
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Affiliation(s)
- Y Kitagawa
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - Y Mori
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - O Komeda
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - K Ishii
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - R Hanayama
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - K Fujita
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - S Okihara
- The Graduate School for the Creation of New Photonics Industries, Kurematsucho, 1955-1 Nishi-ku, Hamamatsu 431-1202 Japan
| | - T Sekine
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - N Satoh
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - T Kurita
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - M Takagi
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - T Watari
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - T Kawashima
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - H Kan
- Hamamatsu Photonics, K. K. Kurematsucho, 1820 Nishi-ku, Hamamatsu 431-1202, Japan
| | - Y Nishimura
- Toyota Technical Development Corp., 1-21 Imae, Hanamoto-cho, Toyota, Aichi 470-0334, Japan
| | - A Sunahara
- Institute for Laser Technology, 1-8-4 Utsubo-honmachi, Nishi-ku, Osaka 550-0004, Japan
| | - Y Sentoku
- Department of Physics, University of Nevada, Reno 1664 N Virginia Street, Reno, Nevada 89557, USA
| | - N Nakamura
- Advanced Material Engineering Division, TOYOTA Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193, Japan
| | - T Kondo
- Advanced Material Engineering Division, TOYOTA Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193, Japan
| | - M Fujine
- Advanced Material Engineering Division, TOYOTA Motor Corporation, 1200, Mishuku, Susono, Shizuoka 410-1193, Japan
| | - H Azuma
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - T Motohiro
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - T Hioki
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - M Kakeno
- TOYOTA Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-cho, Aichi, Japan
| | - E Miura
- National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8568, Japan
| | - Y Arikawa
- Institute of laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565, Japan
| | - T Nagai
- Institute of laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565, Japan
| | - Y Abe
- Institute of laser Engineering, Osaka University, 2-6 Yamadaoka, Suita, Osaka 565, Japan
| | - S Ozaki
- National Institute for Fusion Science, 322-6 Oroshi Toki, Gifu 509-5292, Japan
| | - A Noda
- Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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Cho S, Hattori K, Lee SH, Morita K, Ozaki S. Charmonium spectroscopy in strong magnetic fields by QCD sum rules:S-wave ground states. Int J Clin Exp Med 2015. [DOI: 10.1103/physrevd.91.045025] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Shahgaldi K, Hegner T, Da Silva C, Fukuyama A, Takeuchi M, Uema A, Kado Y, Nagata Y, Hayashi A, Otani K, Fukuda S, Yoshitani H, Otsuji Y, Morhy S, Lianza A, Afonso T, Oliveira W, Tavares G, Rodrigues A, Vieira M, Warth A, Deutsch A, Fischer C, Tezynska-Oniszk I, Turska-Kmiec A, Kawalec W, Dangel J, Maruszewski B, Bokiniec R, Burczynski P, Borszewska-Kornacka K, Ziolkowska L, Zuk M, Troshina A, Dzhalilova D, Poteshkina N, Hamitov F, Warita S, Kawasaki M, Tanaka R, Yagasaki H, Minatoguchi S, Wanatabe T, Ono K, Noda T, Wanatabe S, Minatoguchi S, Angelis A, Ageli K, Vlachopoulos C, Felekos I, Ioakimidis N, Aznaouridis K, Vaina S, Abdelrasoul M, Tsiamis E, Stefanadis C, Cameli M, Sparla S, D'ascenzi F, Fineschi M, Favilli R, Pierli C, Henein M, Mondillo S, Lindqvist P, Tossavainen E, Gonzalez M, Soderberg S, Henein M, Holmgren A, Strachinaru M, Catez E, Jousten I, Pavel O, Janssen C, Morissens M, Chatzistamatiou E, Moustakas G, Memo G, Konstantinidis D, Mpampatzeva Vagena I, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Tsai WC, Sun YT, Lee WH, Yang LT, Liu YW, Lee CH, Li WT, Mizariene V, Bieseviciene M, Karaliute R, Verseckaite R, Vaskelyte J, Lesauskaite V, Chatzistamatiou E, Mpampatseva Vagena I, Manakos K, Moustakas G, Konstantinidis D, Memo G, Mitsakis O, Kasakogias A, Syros P, Kallikazaros I, Hristova K, Cornelissen G, Singh R, Shiue I, Coisne D, Madjalian AM, Tchepkou C, Raud Raynier P, Degand B, Christiaens L, Baldenhofer G, Spethmann S, Dreger H, Sanad W, Baumann G, Stangl K, Stangl V, Knebel F, Azzaz S, Kacem S, Ouali S, Risos L, Dedobbeleer C, Unger P, Sinem Cakal S, Elif Eroglu E, Baydar O, Beytullah Cakal B, Mehmet Vefik Yazicioglu M, Mustafa Bulut M, Cihan Dundar C, Kursat Tigen K, Birol Ozkan B, Ali Metin Esen A, Tournoux F, Chequer R, Sroussi M, Hyafil F, Rouzet F, Leguludec D, Baum P, Stoebe S, Pfeiffer D, Hagendorff A, Fang F, Lau M, Zhang Q, Luo X, Wang X, Chen L, Yu C, Zaborska B, Smarz K, Makowska E, Kulakowski P, Budaj A, Bengrid TM, Zhao Y, Henein MY, Caminiti G, D'antoni V, Cardaci V, Conti V, Volterrani M, Warita S, Kawasaki M, Yagasaki H, Minatoguchi S, Nagaya M, Ono K, Noda T, Watanabe S, Houle H, Minatoguchi S, Gillebert TC, Chirinos JA, Claessens TC, Raja MW, De Buyzere ML, Segers P, Rietzschel ER, Kim K, Cha J, Chung H, Kim J, Yoon Y, Lee B, Hong B, Rim S, Kwon H, Choi E, Pyankov V, Aljaroudi W, Matta S, Al-Shaar L, Habib R, Gharzuddin W, Arnaout S, Skouri H, Jaber W, Abchee A, Bouzas Mosquera A, Peteiro J, Broullon F, Constanso Conde I, Bescos Galego H, Martinez Ruiz D, Yanez Wonenburger J, Vazquez Rodriguez J, Alvarez Garcia N, Castro Beiras A, Gunyeli E, Oliveira Da Silva C, Shahgaldi K, Manouras A, Winter R, Meimoun P, Abouth S, Martis S, Boulanger J, Elmkies F, Zemir H, Detienne J, Luycx-Bore A, Clerc J, Rodriguez Palomares JF, Gutierrez L, Maldonado G, Garcia G, Galuppo V, Gruosso D, Teixido G, Gonzalez Alujas M, Evangelista A, Garcia Dorado D, Rechcinski T, Wierzbowska-Drabik K, Wejner-Mik P, Szymanska B, Jerczynska H, Lipiec P, Kasprzak J, El-Touny K, El-Fawal S, Loutfi M, El-Sharkawy E, Ashour S, Boniotti C, Carminati M, Fusini L, Andreini D, Pontone G, Pepi M, Caiani E, Oryshchyn N, Kramer B, Hermann S, Liu D, Hu K, Ertl G, Weidemann F, Ancona F, Miyazaki S, Slavich M, Figini F, Latib A, Chieffo A, Montorfano M, Alfieri O, Colombo A, Agricola E, Nogueira M, Branco L, Rosa S, Portugal G, Galrinho A, Abreu J, Cacela D, Patricio L, Fragata J, Cruz Ferreira R, Igual Munoz B, Erdociain Perales M, Maceira Gonzalez A, Estornell Erill Jordi J, Donate Bertolin L, Vazquez Sanchez Alejandro A, Miro Palau Vicente V, Cervera Zamora A, Piquer Gil M, Montero Argudo A, Girgis HYA, Illatopa V, Cordova F, Espinoza D, Ortega J, Khan U, Islam A, Majumder A, Girgis HYA, Bayat F, Naghshbandi E, Naghshbandi E, Samiei N, Samiei N, Malev E, Omelchenko M, Vasina L, Zemtsovsky E, Piatkowski R, Kochanowski J, Budnik M, Scislo P, Opolski G, Kochanowski J, Piatkowski R, Scislo P, Budnik M, Marchel M, Opolski G, Abid L, Ben Kahla S, Abid D, Charfeddine S, Maaloul I, Ben Jmaa M, Kammoun S, Hashimoto G, Suzuki M, Yoshikawa H, Otsuka T, Isekame Y, Yamashita H, Kawase I, Ozaki S, Nakamura M, Sugi K, Benvenuto E, Leggio S, Buccheri S, Bonura S, Deste W, Tamburino C, Monte IP, Gripari P, Fusini L, Muratori M, Tamborini G, Ghulam Ali S, Bottari V, Cefalu' C, Bartorelli A, Agrifoglio M, Pepi M, Zambon E, Iorio A, Di Nora C, Abate E, Lo Giudice F, Di Lenarda A, Agostoni P, Sinagra G, Timoteo AT, Galrinho A, Moura Branco L, Rio P, Aguiar Rosa S, Oliveira M, Silva Cunha P, Leal A, Cruz Ferreira R, Zemanek D, Tomasov P, Belehrad M, Kostalova J, Kara T, Veselka J, Hassanein M, El Tahan S, El Sharkawy E, Shehata H, Yoon Y, Choi H, Seo H, Lee S, Kim H, Youn T, Kim Y, Sohn D, Choi G, Mielczarek M, Huttin O, Voilliot D, Sellal J, Manenti V, Carillo S, Olivier A, Venner C, Juilliere Y, Selton-Suty C, Butz T, Faber L, Brand M, Piper C, Wiemer M, Noelke J, Sasko B, Langer C, Horstkotte D, Trappe H, Maysou L, Tessonnier L, Jacquier A, Serratrice J, Copel C, Stoppa A, Seguier J, Saby L, Verschueren A, Habib G, Petroni R, Bencivenga S, Di Mauro M, Acitelli A, Cicconetti M, Romano S, Petroni A, Penco M, Maceira Gonzalez AM, Cosin-Sales J, Igual B, Sancho-Tello R, Ruvira J, Mayans J, Choi J, Kim S, Almeida A, Azevedo O, Amado J, Picarra B, Lima R, Cruz I, Pereira V, Marques N, Chatzistamatiou E, Konstantinidis D, Manakos K, Mpampatseva Vagena I, Moustakas G, Memo G, Mitsakis O, Kasakogias A, Syros P, Kallikazaros I, Cho E, Kim J, Hwang B, Kim D, Jang S, Jeon H, Cho J, Chatzistamatiou E, Konstantinidis D, Memo G, Mpapatzeva Vagena I, Moustakas G, Manakos K, Traxanas K, Vergi N, Feretou A, Kallikazaros I, Jedrzejewska I, Konopka M, Krol W, Swiatowiec A, Dluzniewski M, Braksator W, Sefri Noventi S, Sugiri S, Uddin I, Herminingsih S, Arif Nugroho M, Boedijitno S, Caro Codon J, Blazquez Bermejo Z, Valbuena Lopez SC, Lopez Fernandez T, Rodriguez Fraga O, Torrente Regidor M, Pena Conde L, Moreno Yanguela M, Buno Soto A, Lopez-Sendon JL, Stevanovic A, Dekleva M, Kim M, Kim S, Kim Y, Shim J, Park S, Park S, Kim Y, Shim W, Kozakova M, Muscelli E, Morizzo C, Casolaro A, Paterni M, Palombo C, Bayat F, Nazmdeh M, Naghshbandi E, Nateghi S, Tomaszewski A, Kutarski A, Brzozowski W, Tomaszewski M, Nakano E, Harada T, Takagi Y, Yamada M, Takano M, Furukawa T, Akashi Y, Lindqvist G, Henein M, Backman C, Gustafsson S, Morner S, Marinov R, Hristova K, Geirgiev S, Pechilkov D, Kaneva A, Katova T, Pilosoff V, Pena Pena M, Mesa Rubio D, Ruiz Ortin M, Delgado Ortega M, Romo Penas E, Pardo Gonzalez L, Rodriguez Diego S, Hidalgo Lesmes F, Pan Alvarez-Ossorio M, Suarez De Lezo Cruz-Conde J, Gospodinova M, Sarafov S, Guergelcheva V, Vladimirova L, Tournev I, Denchev S, Mozenska O, Segiet A, Rabczenko D, Kosior D, Gao S, Eliasson M, Polte C, Lagerstrand K, Bech-Hanssen O, Morosin M, Piazza R, Leonelli V, Leiballi E, Pecoraro R, Cinello M, Dell' Angela L, Cassin M, Sinagra G, Nicolosi G, Savu O, Carstea N, Stoica E, Macarie C, Moldovan H, Iliescu V, Chioncel O, Moral S, Gruosso D, Galuppo V, Teixido G, Rodriguez-Palomares J, Gutierrez L, Evangelista A, Jansen Klomp WW, Peelen L, Spanjersberg A, Brandon Bravo Bruinsma G, Van 'T Hof A, Laveau F, Hammoudi N, Helft G, Barthelemy O, Michel P, Petroni T, Djebbar M, Boubrit L, Le Feuvre C, Isnard R, Bandera F, Generati G, Pellegrino M, Alfonzetti E, Labate V, Villani S, Gaeta M, Guazzi M, Gabriels C, Lancellotti P, Van De Bruaene A, Voilliot D, De Meester P, Buys R, Delcroix M, Budts W, Cruz I, Stuart B, Caldeira D, Morgado G, Almeida A, Lopes L, Fazendas P, Joao I, Cotrim C, Pereira H, Weissler Snir A, Greenberg G, Shapira Y, Weisenberg D, Monakier D, Nevzorov R, Sagie A, Vaturi M, Bando M, Yamada H, Saijo Y, Takagawa Y, Sawada N, Hotchi J, Hayashi S, Hirata Y, Nishio S, Sata M, Jackson T, Sammut E, Siarkos M, Lee L, Carr-White G, Rajani R, Kapetanakis S, Ciobotaru V, Yagasaki H, Kawasaki M, Tanaka R, Minatoguchi S, Sato N, Amano K, Warita S, Ono K, Noda T, Minatoguchi S, Breithardt OA, Razavi H, Nabutovsky Y, Ryu K, Gaspar T, Kosiuk J, John S, Prinzen F, Hindricks G, Piorkowski C, Nemchyna O, Tovstukha V, Chikovani A, Golikova I, Lutai M, Nemes A, Kalapos A, Domsik P, Lengyel C, Orosz A, Forster T, Nordenfur T, Babic A, Giesecke A, Bulatovic I, Ripsweden J, Samset E, Winter R, Larsson M, Blazquez Bermejo Z, Lopez Fernandez T, Caro Codon J, Valbuena S, Caro Codon J, Mori Junco R, Moreno Yanguela M, Lopez-Sendon J, Pinto-Teixeira P, Branco L, Galrinho A, Oliveira M, Cunha P, Silva T, Rio P, Feliciano J, Nogueira-Silva M, Ferreira R, Shkolnik E, Vasyuk Y, Nesvetov V, Shkolnik L, Varlan G, Bajraktari G, Ronn F, Ibrahimi P, Jashari F, Jensen S, Henein M, Kang MK, Mun HS, Choi S, Cho JR, Han S, Lee N, Cho IJ, Heo R, Chang H, Shin S, Shim C, Hong G, Chung N. Poster session 3: Thursday 4 December 2014, 14:00-18:00 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2014. [DOI: 10.1093/ehjci/jeu253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Cho S, Hattori K, Lee SH, Morita K, Ozaki S. QCD sum rules for magnetically induced mixing between ηc and J/ψ. Phys Rev Lett 2014; 113:172301. [PMID: 25379915 DOI: 10.1103/physrevlett.113.172301] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Indexed: 06/04/2023]
Abstract
We investigate the properties of charmonia in strong magnetic fields by using QCD sum rules. We show how to implement the mixing effects between η(c) and J/ψ on the basis of field-theoretical approaches, and then show that the sum rules are saturated by the mixing effects with phenomenologically determined parameters. Consequently, we find that the mixing effects are the dominant contribution to the mass shifts of the static charmonia in strong magnetic fields.
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Affiliation(s)
- Sungtae Cho
- Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea
| | - Koichi Hattori
- Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea and Theoretical Research Division, Nishina Center, RIKEN, Wako, Saitama 351-0198, Japan and RIKEN BNL Research Center, Building 510A, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Su Houng Lee
- Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea
| | - Kenji Morita
- Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, D-60438 Frankfurt am Main, Germany and Institute of Theoretical Physics, University of Wroclaw, PL-50204 Wroclaw, Poland and Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Sho Ozaki
- Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749, Korea and Theory Center, IPNS, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 305-0801, Japan
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Tsuchida K, Yamada H, Yamasaki Y, Ooka S, Suzuki K, Akashi Y, Ozaki S. SAT0320 Coexistence of Left Heart Diseases is Common among Patients with Connective Tissue Diseases-Associated Pulmonary Arterial Hypertension. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.4878] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Yamasaki Y, Suzuki K, Akashi Y, Tsuchida K, Ozaki S, Yamada H. FRI0510 Good Detection of Early Pulmonary Hypertension Using Exercise Doppler Echocardiography in Patients with Connective Tissue Diseases and Its Comparison with Other Screening Tool. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.1601] [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: 11/04/2022]
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Ozaki S, Saito A, Nakaminami H, Shimamura J, Naito N, Ono M, Noguchi N, Motomura N. Efficacy and Safety of Sustained Release of Vancomycin Through Fibrin Glue Against Local Prosthesis Infection By Methicillin-resistant Staphylococcus aureus. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.490] [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: 11/26/2022] Open
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Ohara M, Hideo S, Akiko E, Masumoto N, Ozaki S, Kadoya T, Okada M. Abstract P4-01-04: Role of FDG-PET/CT in evaluating surgical outcomes of operable breast cancer: Usefulness for malignant grade of triple-negative breast cancer. Cancer Res 2013. [DOI: 10.1158/0008-5472.sabcs13-p4-01-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background: The aim of this study was to evaluate the significance of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) for speculating the malignant level and prognostic value of operable breast cancers.
Methods: Of 578 consecutive patients with primary invasive breast cancer who underwent curative surgery between 2005 and 2010, 311 patients (53.8%) who received FDG PET/CT before initial therapy were examined.
Results: Receiver operating characteristics (ROC) curve analysis showed the cutoff value of the maximum standardized uptake value (SUVmax) to predict cancer recurrence was 3.8 in all patients and 8.6 in patients with the triple-negative subtype, respectively. In all patients, 3-year DFS rates were 98.8% for patients with a tumor of SUVmax ≤ 3.8 and 91.6% for patients with a tumor of SUVmax > 3.8 (p < 0.001). High value of SUVmax was significantly associated with large tumor size (p < 0.001), lymph node metastasis (p = 0.040), high nuclear grade (p < 0.001), lymphovascular invasion (p = 0.032), negative hormone receptor status (p < 0.001), and positive HER2 status (p = 0.014). Based on the results of multivariate Cox analysis in all patients, high SUVmax (p = 0.001) and negative hormone receptor status (p = 0.005) were significantly associated with poor prognosis. In patients with triple-negative subtype, 3-year DFS rates were 90.9% for patients with a tumor of SUVmax ≤ 8.6 and 42.9% for patients with a tumor of SUVmax > 8.6 (p = 0.002), and high SUVmax was the only significant independent prognostic factor (p = 0.047).
Conclusion: FDG-PET/CT is useful for predicting malignant behavior and prognosis in patients with operable breast cancer, especially the triple-negative subtype.
Citation Information: Cancer Res 2013;73(24 Suppl): Abstract nr P4-01-04.
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Affiliation(s)
- M Ohara
- Hiroshima University, Hiroshima, Japan
| | - S Hideo
- Hiroshima University, Hiroshima, Japan
| | - E Akiko
- Hiroshima University, Hiroshima, Japan
| | | | - S Ozaki
- Hiroshima University, Hiroshima, Japan
| | - T Kadoya
- Hiroshima University, Hiroshima, Japan
| | - M Okada
- Hiroshima University, Hiroshima, Japan
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Kawase I, Ozaki S, Yamashita H, Uchida S, Nozawa Y, Takatoh M, Hagiwara S. 322-I * LOOKING FOR A BETTER WAY TO RECONSTRUCT THE BICUSPID AORTIC VALVE BY TRICUSPIDIZATION WITH AUTOLOGOUS PERICARDIUM. Interact Cardiovasc Thorac Surg 2013. [DOI: 10.1093/icvts/ivt372.322] [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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Tsuchida K, Yamada H, Yamasaki Y, Suzuki K, Akashi Y, Ozaki S. SAT0192 High Frequency of Left-Sided Heart Diseases as an Important Cause of Pulmonary Hypertension in Connective Tissue Diseases. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1918] [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: 11/04/2022]
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Uchida T, Nagai K, Sato T, Iizuka N, Arito M, Takakuwa Y, Nakano H, Ooka S, Kurokawa M, Suematu N, Okamoto K, Ozaki S, Kato T. AB0153 Comparative proteomic analysis of neutrophils from patients with microscopic polyangiitis and granulomatosis with polyangiitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.2476] [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: 11/03/2022]
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Takakuwa Y, Yamada H, Ito H, Ooka S, Yamasaki Y, Nakano H, Hiida M, Kurihara Y, Ozaki S. THU0410 Characterisation of interstitial lung disease associated with adult still’s disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2375] [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: 11/04/2022]
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Yamasaki Y, Yamada H, Suzuki K, Akashi Y, Tsuchida K, Ozaki S. FRI0268 Detection of borderline pulmonary hypertension using exercise doppler echocardiography in patients with connective tissue diseases. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2725] [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: 11/04/2022]
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Yamasaki Y, Yamada H, Suzuki K, Tsuchida K, Akashi Y, Ozaki S. OP0037 Derivation and Validation of a Formula for Screening and Identification of Early Pulmonary Hypertension Using Exercise Doppler Echocardiography in Patients with Connective Tissue Diseases. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.242] [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: 11/03/2022]
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Takakuwa Y, Ooka S, Ito H, Kiyokawa T, Nakano H, Hiida M, Yamada H, Ozaki S. THU0488 Efficacy and Safety of Biologic Agents for the Treatment of Refractory Adult Still’s Disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1016] [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: 11/04/2022]
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Ooka S, Takakuwa Y, Nakano H, Nagafuchi H, Hiida M, Yamada H, Ozaki S. AB1228 HLA-B27-associated HLA factor with behcet’s disease patient. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1226] [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: 11/03/2022]
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Ooka S, Nakano H, Takakuwa Y, Murakami Y, Kiyokawa T, Yamada H, Ozaki S. FRI0313 Detection of anti-granulocyte macrophage colony-stimulating factor autoantibody in systemic lupus erythematodes. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.1440] [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: 11/03/2022]
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Maeda A, Yamada H, Yamasaki Y, Shibata T, Nagafuchi H, Kurihara Y, Ozaki S. THU0200 Clinical and radiological characteristics of interstitial lung disease in japanese patients with microscopic polyangiitis. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.2165] [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: 11/03/2022]
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Ishizu A, Tomaru U, Murai T, Yamamoto T, Atsumi T, Yoshiki T, Makino H, Ozaki S. Prediction of outcome of treatment by gene expression profiling of peripheral blood in patients with microscopic polyangiitis. Presse Med 2013. [DOI: 10.1016/j.lpm.2013.02.194] [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: 11/30/2022] Open
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Furuta S, Chaudhry A, Hamano Y, Fujimoto S, Nagafuchi H, Ozaki S, Makino H, Matsuo S, Endo T, Muso E, Ito C, Kusano E, Yamagata M, Ikeda K, Kasiwakuma D, Iwamoto I, Westman K, Jayne D. Comparison of phenotype and outcome in microscopic polyangiitis between Europe and Japan. Presse Med 2013. [DOI: 10.1016/j.lpm.2013.02.193] [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: 11/16/2022] Open
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Miura Y, Ozaki S, Kuwahara Y, Tsujikawa M, Abe K, Shirai M. The origin of perpendicular magneto-crystalline anisotropy in L1(0)-FeNi under tetragonal distortion. J Phys Condens Matter 2013; 25:106005. [PMID: 23395865 DOI: 10.1088/0953-8984/25/10/106005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigated the origin of perpendicular magneto-crystalline anisotropy (MCA) in L1(0)-ordered FeNi alloy using first-principles density-functional calculations. We found that the perpendicular MCA of L1(0)-FeNi arises predominantly from the constituent Fe atoms, which is consistent with recent measurements of the anisotropy of the Fe orbital magnetic moment of L1(0)-FeNi by means of x-ray magnetic circular dichroism. Analysis of the second-order perturbation of the spin-orbit interaction indicates that spin-flip excitations between the occupied majority-spin and unoccupied minority-spin bands make a considerable contribution to the perpendicular MCA, as does the spin-conservation term for the minority-spin bands. Furthermore, the MCA energy increases as the in-plane lattice parameter decreases (increasing the axial ratio c/a). The increase in the MCA energy can be attributed to further enhancement of the spin-flip term due to modulation of the Fe d(xy) and d(x(2) - y(2)) orbital components around the Fermi level under compressive in-plane distortion.
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Affiliation(s)
- Yoshio Miura
- Research Institute of Electrical Communication (RIEC), Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan.
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Komatsu Y, Tamaki T, Kumagai A, Narita Y, Katayama K, Isobe H, Nakamura M, Goda Y, Takahashi Y, Iwanami Y, Suzuki Y, Tanaka K, Ozaki S. To Clarify the Difference between the Treatment by Oncologist and Palliative Physicians: A Multicenter Retrospective Study, HOME1202. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32212-2] [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: 11/29/2022] Open
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Hosaka A, Hyodo T, Jido D, Nagahiro H, Nawa K, Ohkoda S, Ozaki S, Yamaguchi Y, Yasui S. Hadron resonances with coexistence of different natures. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20122001005] [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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