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Miyoshi K, Tanabe M, Ihara K, Tanabe M, Higashi M, Narikiyo K, Kawano Y, Inoue A, Ito K. Dual-Source Contrast-Enhanced Multiphasic CT of the Liver Using Low Voltage (70 kVp): Feasibility of a Reduced Radiation Dose and a 50% of Contrast Dose. Tomography 2023; 9:1568-1576. [PMID: 37736978 PMCID: PMC10514808 DOI: 10.3390/tomography9050125] [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: 07/13/2023] [Revised: 08/05/2023] [Accepted: 08/17/2023] [Indexed: 09/23/2023] Open
Abstract
This study investigated the feasibility of both a reduced radiation dose and a 50% of contrast dose in multiphasic CT of the liver with a 70 kVp protocol compared with a standard-tube-voltage protocol derived from dual-energy (DE) CT (blended DE protocol) with a full-dose contrast-agents in the same patient group. This study included 46 patients who underwent multiphasic contrast-enhanced dynamic CT of the liver with both a 70 kVp and a blended DE protocols. For quantitative analysis, median CT values for the liver, aorta, and portal vein, as well as signal-to-noise ratio (SNR) and contrast-to-noise ratio (CNR), were measured and calculated. In addition, as a qualitative analysis, the contrast effect and overall image quality of the abdominal organs were evaluated on a five-point scale. CNR and SNR of the hepatic parenchyma were not significantly different between the 70kV protocol and the Blended DE protocol in all phases. The 70 kVp protocol showed significantly better image quality compared with the blended DE protocol in the arterial phase (p = 0.035) and the equilibrium layer phase (p = 0.016). A 70 kVp CT protocol in combination with a reduced radiation dose and half-dose iodine load is feasible for multiphasic dynamic CT of the liver by maintaining the contrast enhancement effects and image quality in comparison with the blended DE CT protocol.
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Affiliation(s)
- Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Masahiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Kenichiro Ihara
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Masaya Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Mayumi Higashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Koji Narikiyo
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Yosuke Kawano
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Atsuo Inoue
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Ube 755-8505, Japan
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Matsubara K, Miyoshi K, Takeshi K, Kawana S, Kubo Y, Shimizu D, Hashimoto K, Tanaka S, Okazaki M, Sugimoto S, Toyooka S. A Novel Strategy In Vivo Lung Recovery for Prompt Recovery from Primary Graft Dysfunction after Lung Transplantation. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.888] [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: 04/05/2023] Open
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Choshi H, Miyoshi K, Ujike H, Kawana S, Kubo Y, Shimizu D, Matsubara K, Hashimoto K, Tanaka S, Shien K, Suzawa K, Yamamoto H, Okazaki M, Sugimoto S, Toyooka S. Successful Lung Re-Transplantation with Perioperative Desensitization for Sensitized Recipient with Donor Specific DQ Antibody. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1279] [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: 04/05/2023] Open
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Kubo Y, Sugimoto S, Choshi H, Ujike H, Kawana S, Shimizu D, Matsubara K, Hashimoto K, Tanaka S, Shien K, Suzawa K, Miyoshi K, Yamamoto H, Okazaki M, Toyooka S. Histidine-Rich Glycoprotein Ameliorates Lung Ischemia-Reperfusion Injury in a Mouse. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1562] [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: 04/05/2023] Open
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Ujike H, Tanaka S, Choshi H, Kawana S, Kubo Y, Shimizu D, Matsubara K, Hashimoto K, Shien K, Suzawa K, Miyoshi K, Yamamoto H, Okazaki M, Sugimoto S, Toyooka S. Bilateral Lung Transplantation from Living Donors in a 67-Year-Old Patient. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.904] [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: 04/05/2023] Open
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Sato Y, Fujiwara S, Hata A, Kida Y, Masuda T, Amimoto H, Matsumoto H, Miyoshi K, Otsuka K, Tomii K. 1545P A multicenter prospective observational study of pre-existing autoantibodies in patients with small cell lung cancer treated with ICI. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1639] [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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Okada M, Ihara K, Miyoshi K, Nakao S, Tanabe M, Tokumitsu Y, Harada E, Sakamoto K, Nagano H, Ito K. Portal vein embolization via the ipsilateral percutaneous transhepatic approach versus laparotomic transileocecal approach: complications, profile and changes in future liver remnant volume. Br J Radiol 2022; 95:20210854. [PMID: 35348358 PMCID: PMC10996331 DOI: 10.1259/bjr.20210854] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 03/20/2022] [Accepted: 03/22/2022] [Indexed: 01/20/2023] Open
Abstract
OBJECTIVE Major liver resection is an effective treatment option for patients with liver malignancy. The future liver remnant (FLR) volume and complications after portal vein embolization (PVE) were compared between the ipsilateral right portal vein (PTPE) and transileocolic (TIPE) approaches. METHODS A total of 42 patients (TIPE, n = 22; PTPE, n = 20) underwent right lobectomy after PVE. CT and hepatobiliary scintigraphy were repeated before and after PVE. The blood examination findings and the FLR values (FLRCT: calculated from CT, %FLRCT: FLRCT ratio, %FLRSPECT: FLR ratio using single photon emission CT, FLRCT/BS: FLRCT to body surface ratio) were compared between two approach sites. The complications and mortality were also analyzed after PVE and major right hepatectomy. RESULTS There were no significant differences in the patient characteristics, blood examination findings or FLR values between two groups. Adequate liver regeneration was observed without significant differences between PTPE and TIPE (increased ratio of FLRCT: 8.7% vs 19.2%, p = 0.15 [25-75 percentile: 17.1-60.4], %FLRCT: 11.2% vs 8.3%, p = 0.25 [6.3-13.3], %FLRSPECT: 15.4% vs 19.2%, p = 0.09 [16.0-22.4], FLRCT/BS: 33.6% vs 47.1%, p = 0.19 [17.2-60.4], respectively), but TIPE required a significantly longer procedure time than PTPE [181.4 min vs 108.7 min, p < 0.01 (103.3-193.5)]. However, one patient was converted to TIPE due to bleeding during PTPE. After right lobectomy, portal vein stenosis or thrombosis was noted in three patients [two with TIPE (9.1%) and one with PTPE (5%)] and three TIPE patients died within 90 days (13.6%) after right hepatectomy. CONCLUSION FLR volume significantly increased after PVE, regardless of the approach sites; however, PTPE is a useful technique with a shorter procedure time.
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Affiliation(s)
- Munemasa Okada
- Department of Radiology, National Hospital Organization, Kanmon
Medical Center, Shimonoseki,
Japan
| | - Kenichiro Ihara
- Department of Radiology, Yamaguchi University Graduate School
of Medicine, Ube,
Japan
| | - Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School
of Medicine, Ube,
Japan
| | - Sei Nakao
- Department of Surgery and Clinical Science, Yamaguchi
University Graduate School of Medicine,
Ube, Japan
| | - Masahiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School
of Medicine, Ube,
Japan
| | - Yukio Tokumitsu
- Department of Gastroenterological, Breast and Endocrine
Surgery, Yamaguchi University Graduate School of Medicine,
Ube, Japan
| | - Eijiro Harada
- Department of Surgery and Clinical Science, Yamaguchi
University Graduate School of Medicine,
Ube, Japan
| | - Kazuhiko Sakamoto
- Department of Surgery, National Hospital Organization, Kanmon
Medical Center, Shimonoseki,
Japan
| | - Hiroaki Nagano
- Department of Gastroenterological, Breast and Endocrine
Surgery, Yamaguchi University Graduate School of Medicine,
Ube, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School
of Medicine, Ube,
Japan
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Nakata K, Okazaki M, Miyoshi K, Sugimoto S, Sakaguchi M, Toyooka S. Anti-S100A8/A9 Neutralizing Monoclonal Antibody Ameliorates Lung Injury Induced by Lung Ischemia Reperfusion Injury. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.040] [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] Open
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Tomioka Y, Sugimoto S, Kawana S, Kubo Y, Shimizu D, Matsubara K, Tanaka S, Miyoshi K, Okazaki M, Toyooka S. Identification of Single-Nucleotide Polymorphisms Associated with Renal Dysfunction After Lung Transplantation Using Ethnic-Specific SNP Array. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.623] [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] Open
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Kubo Y, Sugimoto S, Shiotani T, Kawana S, Shimizu D, Matsubara K, Hashimoto K, Tanaka S, Shien K, Suzawa K, Miyoshi K, Yamamoto H, Okazaki M, Toyooka S. The Percentage of Low Attenuation Area on Computed Tomography to Detect Chronic Lung Allograft Dysfunction After Bilateral Lung Transplantation. J Heart Lung Transplant 2022. [DOI: 10.1016/j.healun.2022.01.247] [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: 11/25/2022] Open
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Onoda H, Tanabe M, Higashi M, Kawano Y, Ihara K, Miyoshi K, Ito K. Assessment of gastric wall structure using ultra-high-resolution computed tomography. Eur J Radiol 2021; 146:110067. [PMID: 34847396 DOI: 10.1016/j.ejrad.2021.110067] [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: 10/01/2021] [Revised: 11/14/2021] [Accepted: 11/21/2021] [Indexed: 12/24/2022]
Abstract
PURPOSE To evaluate the image quality of ultra-high-resolution CT (U-HRCT) in the comparison among four different reconstruction methods, focusing on the gastric wall structure, and to compare the conspicuity of a three-layered structure of the gastric wall between conventional HRCT (C-HRCT) and U-HRCT. METHOD Our retrospective study included 48 patients who underwent contrast-enhanced U-HRCT. Quantitative analyses were performed to compare image noise of U-HRCT between deep-learning reconstruction (DLR) and other three methods (filtered back projection: FBP, hybrid iterative reconstruction: Hybrid-IR, and Model-based iterative reconstruction: MBIR). The mean overall image quality scores were also compared between the DLR and other three methods. In addition, the mean conspicuity scores for the three-layered structure of the gastric wall at five regions were compared between C-HRCT and U-HRCT. RESULTS The mean noise of U-HRCT with DLR was significantly lower than that with the other three methods (P < 0.001). The mean overall image quality scores with DLR images were significantly higher than those with the other three methods (P < 0.001). Regarding the comparison between C-HRCT and U-HRCT, the mean conspicuity scores for the three-layered structure of the gastric wall on U-HRCT were significantly better than those on C-HRCT in the fornix (5 [5-5] vs. 3.5 [3-4], P < 0.001), body (4 [3.25-5] vs. 4 [3-4], P = 0.039), angle (5 [4-5] vs. 3 [2-4], P < 0.001), and antral posterior (4 [3.25-5] vs. 2 [2-4], P < 0.001), except for antral anterior (4 [3-5] vs. 3 [3-4], P = 0.230) CONCLUSION: U-HRCT using DLR improved the image noise and overall image quality of the gastric wall as well as the conspicuity of the three-layered structure, suggesting its utility for the evaluation of the anatomical details of the gastric wall structure.
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Affiliation(s)
- Hideko Onoda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Masahiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan.
| | - Mayumi Higashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Yosuke Kawano
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Kenichiro Ihara
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
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Otani S, Tomioka Y, Matsubara K, Shimizu D, Yamamoto H, Shiotani T, Suzawa K, Miyoshi K, Yamamoto H, Okazaki M, Sugimoto S, Yamane M, Toyooka S. Pediatric Lung Transplantation−Intermediate Outcomes of a Japanese Center. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.995] [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: 11/16/2022] Open
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Matsubara K, Otani S, Shimizu D, Tomioka Y, Shiotani T, Yamamoto H, Miyoshi K, Okazaki M, Sugimoto S, Yamane M, Toyooka S. Risk Assessment of Chronic Lung Allograft Dysfunction Phenotypes after Living-Donor Lobar Lung Transplantation According to the 2019 ISHLT Classification System. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.867] [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: 10/21/2022] Open
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Yamamoto H, Sugimoto S, Suzuki E, Tomioka Y, Shiotani T, Shimizu D, Matsubara K, Miyoshi K, Otani S, Okazaki M, Yamane M, Toyooka S. Combination of Neutrophil to Lymphocyte Ratio and Glasgow Prognostic Score Improves Prognostic Accuracy in Lung Transplantation: Validation of 9 Preoperative Prognostic Scoring Methods. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1007] [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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Shiotani T, Sugimoto S, Yamamoto H, Matsubara K, Shimizu D, Nakata K, Tomioka Y, Miyoshi K, Otani S, Okazaki M, Yamane M, Toyooka S. Plasma Levels of Histidine-Rich Glycoprotein are Associated with the Development of Primary Graft Dysfunction after Lung Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.455] [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: 10/21/2022] Open
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Tomioka Y, Sugimoto S, Matsubara K, Shimizu D, Yamamoto H, Shiotani T, Miyoshi K, Ohtani S, Okazaki M, Yamane M, Toyooka S. The UNCX Polymorphism is Associated with the Development of Renal Dysfunction after Lung Transplantation. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.977] [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: 10/21/2022] Open
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Tanabe M, Higashi M, Benkert T, Imai H, Miyoshi K, Kameda F, Ariyoshi S, Ihara K, Ito K. Reduced Field-of-View Diffusion-Weighted Magnetic Resonance Imaging of the Pancreas With Tilted Excitation Plane: A Preliminary Study. J Magn Reson Imaging 2021; 54:715-720. [PMID: 33704860 DOI: 10.1002/jmri.27590] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 10/11/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND Reduced field-of-view diffusion-weighted imaging (rDWI) with tilted two-dimensional radiofrequency (RF) excitation planes has not yet been applied to the imaging of the pancreas although the utility of this technique which allows the acquisition of high-quality images without aliasing artifacts in the phase-encoding direction has been evaluated for brain and spinal cord imaging. PURPOSE To evaluate the visual image quality of the pancreas by tilting the excitation plane (tilted rDWI) in comparison to conventional DWI (cDWI) and rDWI without using the tilted excitation plane. STUDY TYPE Retrospective. POPULATION Thirty-two patients evaluated for suspected pancreatobiliary diseases. FIELD STRENGTH/SEQUENCE Echo-planar imaging DWI (cDWI, rDWI, and tilted rDWI) acquired at 3 T. ASSESSMENT Images from each DWI sequence were analyzed by five radiologists to compare image quality (conspicuity of pancreatic edges, interslice signal homogeneity, overall image quality, and conspicuity of focal pancreatic lesions) and artifacts (presence of blurring or ghosting artifacts, susceptibility artifacts, and aliasing artifact). STATISTICAL TESTS Shapiro-Wilk test was performed to assess whether data were normally distributed. Friedman test followed by Bonferroni-adjusted Wilcoxon signed-rank test for post hoc analysis was performed to compare image quality and artifact scores. RESULTS The mean scores for conspicuity of pancreatic edges (3.36 vs. 2.37), interslice signal homogeneity (3.14 vs. 2.81), presence of ghosting artifacts (3.32 vs. 2.66), susceptibility artifacts (3.06 vs. 2.30), and aliasing artifacts (3.90 vs. 2.34), and overall image quality (3.49 vs. 2.36) were significantly higher in the tilted rDWI than in the rDWI (P < 0.017 for all parameters). The conspicuity score for focal pancreatic lesions tended to be higher in tilted rDWI than in rDWI (2.44 vs. 2.00, P = 0.07). DATA CONCLUSION Tilted rDWI had better image quality and reduced artifacts relative to cDWI and rDWI techniques in the pancreas. LEVEL OF EVIDENCE 4 TECHNICAL EFFICACY: Stage 2.
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Affiliation(s)
- Masahiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Mayumi Higashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Thomas Benkert
- MR Application Predevelopment, Siemens Healthcare GmbH, Erlangen, Germany
| | - Hiroshi Imai
- MR Research and Collaboration, Siemens Healthcare K.K., Tokyo, Japan
| | - Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Fumi Kameda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Shoko Ariyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Kenichiro Ihara
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School of Medicine, Yamaguchi, Japan
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Miyoshi K, Onoda H, Tanabe M, Nakao S, Higashi M, Iida E, Okada M, Furukawa M, Ito K. Image quality in dual-source multiphasic dynamic computed tomography of the abdomen: evaluating the effects of a low tube voltage (70 kVp) in combination with contrast dose reduction. Abdom Radiol (NY) 2020; 45:3755-3762. [PMID: 32382819 DOI: 10.1007/s00261-020-02565-9] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE To compare the image quality of multiphasic (arterial, portal, and equilibrium phases) dynamic computed tomography (CT) of the abdomen obtained by a low tube voltage (70kVp) in combination with a half-dose iodine load using low-concentration contrast agent in high tube output dual-source CT with a standard tube voltage (120kVp) and full-dose iodine load using the same group of adult patients. METHODS Fifty-five patients who underwent both low-tube-voltage (70kVp) abdominal CT with a half-dose iodine load and standard-tube-voltage (120kVp) CT with a full-dose iodine load were analyzed. The mean CT values and signal-to-noise ratio (SNR) of the liver, aorta and portal veins were quantitatively assessed. In addition, the contrast enhancement of the abdominal organs and overall image quality were qualitatively evaluated. RESULTS The mean CT values and SNR of the liver parenchyma were significantly higher in 70-kVp protocol than in 120-kVp protocol in all 3 phases (p = 0.018 ~ < 0.001). Regarding the qualitative analysis, the overall image quality in the 70-kVp protocol was significantly better than in the 120-kVp protocol in all 3 phases (p < 0.001). In addition, the contrast enhancement scores of the liver parenchyma and hepatic vein in the equilibrium phase were also significantly higher in the 70-kVp protocol than in the 120-kVp protocol (p < 0.001). CONCLUSION A low tube voltage (70kVp) in combination with a half-dose iodine load using a low-concentration contrast agent and an iterative reconstruction algorithm in high tube output dual-source CT may improve the contrast enhancement and image quality in multiphasic dynamic CT of the abdomen in patients under 71 kg of body weight.
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Affiliation(s)
- Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hideko Onoda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Mashiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Sei Nakao
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Mayumi Higashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Etsushi Iida
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Munemasa Okada
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Matakazu Furukawa
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.
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Tanabe M, Higashi M, Iida E, Onoda H, Ihara K, Ariyoshi S, Kameda F, Miyoshi K, Furukawa M, Okada M, Ito K. Transient respiratory motion artifacts in multiple arterial phases on abdominal dynamic magnetic resonance imaging: a comparison using gadoxetate disodium and gadobutrol. Jpn J Radiol 2020; 39:178-185. [PMID: 32959222 DOI: 10.1007/s11604-020-01042-z] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 09/07/2020] [Indexed: 12/11/2022]
Abstract
PURPOSE To compare the occurrence of transient respiratory motion artifacts (TRMAs) in multiple arterial phases on abdominal magnetic resonance (MR) images between those obtained using gadobutrol and gadoxetate disodium. MATERIALS AND METHODS Two hundred and fourteen abdominal MR examinations (101 with gadoxetate disodium, 113 with gadobutrol) were evaluated. Dynamic three-dimensional contrast-enhanced T1-weighted imaging (CAIPIRINHA-Dixon-TWIST-VIBE) including single-breath-hold six arterial phase acquisitions was performed on a 3.0-T MRI scanner. The TRMAs frequency and the mean TRMA scores were compared between patients assessed with gadoxetate disodium and those assessed with gadobutrol. In addition, the timing of TRMAs appearing for the first time was also recorded and compared between the two groups. RESULTS The mean TRMA scores in all arterial phases using gadoxetate disodium were significantly worse than in those using gadobutrol (1.49 ± 0.78 vs. 1.18 ± 0.53, P < .001). Regarding the timing of the occurrence of TRMAs, the severe TRMAs frequency after the third arterial phase was significantly higher in patients using gadoxetate disodium (10/101, 10%) than in those using gadobutrol (0/113, 0%) (P < .001). CONCLUSION In multiple-arterial-phase dynamic MRI, the TRMAs frequency when using gadoxetate disodium increased compared with gadobutrol, due to intolerable respiratory suspension after the third arterial phase.
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Affiliation(s)
- Masahiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Mayumi Higashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Etsushi Iida
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hideko Onoda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Kenichiro Ihara
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Shoko Ariyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Fumi Kameda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Matakazu Furukawa
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Munemasa Okada
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
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Shiotani T, Sugimoto S, Yamamoto H, Shimizu D, Miyoshi K, Otani S, Okazaki M, Yamane M, Oto T, Toyooka S. Plasma micro-RNA Levels are Associated with the Development of Chronic Lung Allograft Dysfunction after Bilateral Living-Donor and Cadaveric Lung Transplantation. J Heart Lung Transplant 2020. [DOI: 10.1016/j.healun.2020.01.792] [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: 10/24/2022] Open
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Higashi M, Tanabe M, Onoda H, Nakao S, Miyoshi K, Iida E, Okada M, Furukawa M, Ito K. Incidentally detected pancreatic adenocarcinomas on computed tomography obtained during the follow-up for other diseases. Abdom Radiol (NY) 2020; 45:774-781. [PMID: 31832740 DOI: 10.1007/s00261-019-02365-w] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
PURPOSE To determine imaging findings of pancreatic adenocarcinomas incidentally detected on contrast-enhanced multiphasic dynamic computed tomography (CT) obtained during the follow-up for other diseases. METHODS From January 2007 to December 2018, 14 patients with pancreatic adenocarcinomas incidentally detected on CT obtained during the follow-up for other diseases (incidental group) and 105 patients with pancreatic adenocarcinomas symptomatically detected on ultrasound or CT (non-incidental group) were included. Imaging characteristics of the tumor were compared between the two groups. Additionally, imaging findings prior to the detection of a tumor on previous CT images in the incidental group were also assessed. RESULTS In cancers of the pancreas body/tail, there was a significantly smaller tumor size (median, 17 mm vs. 42 mm, p < 0.001), a significantly lower incidence of loss of fatty marbling (p = 0.025), vascular involvement (p < 0.001), lymph node metastasis (p = 0.046) and distant metastasis (p = 0.017), and a significantly higher incidence of preserved lobulation (p < 0.001) in the incidental group than in the non-incidental group. Regarding the cancers of the pancreas head, there were no significant differences in the radiological findings between the two groups. On previous CT images, small pancreatic nodules, secondary signs, and loss of fatty marbling tended to be the preceding findings of incidental pancreatic adenocarcinomas. CONCLUSION Incidentally detected pancreatic adenocarcinomas in the pancreas body/tail were characterized by an earlier tumor stage than in cases of symptomatically detected pancreatic adenocarcinoma. Several CT findings prior to the detection of a tumor may be useful for the early detection of pancreatic adenocarcinoma during the follow-up for other diseases.
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Affiliation(s)
- Mayumi Higashi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan.
| | - Masahiro Tanabe
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Hideko Onoda
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Sei Nakao
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Keisuke Miyoshi
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Etsushi Iida
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Munemasa Okada
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Matakazu Furukawa
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
| | - Katsuyoshi Ito
- Department of Radiology, Yamaguchi University Graduate School of Medicine, 1-1-1 Minami-Kogushi, Ube, Yamaguchi, 755-8505, Japan
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Kurosaki T, Otani S, Miyoshi K, Okazaki M, Sugimoto S, Yamane M, Oto T. New Technique Which Was Combined Living Donor Lower Lobe with Cadaveric Marginal Lung as Called “Hybrid Lung Transplant”. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.853] [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: 11/16/2022] Open
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Yamamoto H, Miyoshi K, Kurosaki T, Otani S, Okazaki M, Sugimoto S, Yamane M, Toyooka S, Oto T. Inverted Lung Transplantation: Interposition of Pericardial Conduit for Pulmonary Venous Anastomosis. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.077] [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: 10/27/2022] Open
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Affiliation(s)
- K. Miyoshi
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi, Japan
| | - T. Mashimo
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, Aichi, Japan
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Kurosaki T, Otani S, Sugimoto S, Miyoshi K, Yamamoto H, Tanaka S, Shikatani Y, Mesaki K, Hashimoto K, Yamane M, Toyooka S, Oto T. Experience of Using mTOR Inhibitor in Lung Transplant at Recipients With Lymphangioleiomyomatosis. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1186] [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] Open
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Niman E, Miyoshi K, Namura S, Kurosaki T, Ohtani S, Sugimoto S, Yamane M, Toyooka S, Oto T. Early Detection of Chronic Lung Allograft Dysfunction After Bilateral Living Donor Lobar Lung Transplantation by Computed Tomographic Scanning Scoring Method. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.1152] [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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Komaki H, Takeshita E, Motohashi Y, Ishiyama A, Sasaki M, Miyoshi K, Yamamiya I, Yamada N, Minami N. A Phase I, single- and repeated-dose study of TAS-205, a novel inhibitor of hematopoietic prostaglandin D synthase, in patients with Duchenne muscular dystrophy. Neuromuscul Disord 2017. [DOI: 10.1016/j.nmd.2017.06.445] [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: 11/24/2022]
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Miyoshi K, Kurosaki T, Otani S, Sugimoto S, Yamane M, Oto T. Post-Lung Transplant Outcome & Risk Matching Between Donor & Recipient - Score-Based Analyses. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1512] [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: 11/28/2022] Open
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Yokoyama C, Morioka M, Tanaka S, Miyoshi K, Sahara Y, Oto T. Paird Donor Exchange in Lung Transplantation-Attitude Survey. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1009] [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: 10/19/2022] Open
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Hashimoto K, Sugimoto S, Imanishi K, Kurosaki T, Miyoshi K, Otani S, Yamane M, Oto T. Meticulous Closure of Collateral Blood Flow in the Perihilar Mediastinal Pleura Decreases Bleeding and Surgical Mortality in Lung Transplant Recipients with Pulmonary Hypertension. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1031] [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: 11/17/2022] Open
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31
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Irie M, Otani S, Kurosaki T, Shikatani Y, Mesaki K, Hashimoto K, Tanaka S, Miyahara K, Ohki T, Miyoshi K, Sugimoto S, Yamane M, Miyoshi S, Oto T. Warm Retrograde Perfusion Can Remove More Fat from Lung Grafts with Fat Embolism in a Porcine Donor Model. J Heart Lung Transplant 2017. [DOI: 10.1016/j.healun.2017.01.1064] [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: 11/25/2022] Open
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Simonelli L, Paris E, Iwai C, Miyoshi K, Takeuchi J, Mizokawa T, Saini NL. High resolution x-ray absorption and emission spectroscopy of Li x CoO 2 single crystals as a function delithiation. J Phys Condens Matter 2017; 29:105702. [PMID: 28145896 DOI: 10.1088/1361-648x/aa574d] [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: 06/06/2023]
Abstract
The effect of delithiation in Li x CoO2 is studied by high resolution Co K-edge x-ray absorption and x-ray emission spectroscopy. Polarization dependence of the x-ray absorption spectra on single crystal samples is exploited to reveal information on the anisotropic electronic structure. We find that the electronic structure of Li x CoO2 is significantly affected by delithiation in which the Co ions oxidation state tending to change from 3+ to 4+. The Co intersite (intrasite) 4p-3d hybridization suffers a decrease (increase) by delithiation. The unoccupied 3d t 2g orbitals with a 1g symmetry, containing substantial O 2p character, hybridize isotropically with Co 4p orbitals and likely to have itinerant character unlike anisotropically hybridized 3d e g orbitals. Such a peculiar electronic structure could have significant effect on the mobility of Li in Li x CoO2 cathode and hence the battery characteristics.
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Affiliation(s)
- L Simonelli
- CELLS-ALBA, Carretera BP 1413, de Cerdanyola del Valles a Sant Cugat del Valles, Km. 3,3 08290 Cerdanyola del Valles, Barcelona, Spain. European Synchrotron Radiation Facility, BP220, F-38043 Grenoble Cedex, France
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Tanaka S, Miyoshi K, Kurosaki T, Otani S, Sugimoto S, Yamane M, Oto T. Refinement of Lung Donor Scoring System with Consideration for Negative Impact of Prolonged Donor Intubation Time. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1064] [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: 10/21/2022] Open
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Miyoshi K, Konishi Y, Kurosaki T, Otani S, Sugimoto S, Yamane M, Miyoshi S, Oto T. Not Donor’s but Recipient’s Airway Organisms Are Relevant to Post-Lung Transplant Pneumonia. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.880] [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] Open
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35
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Hirano Y, Sugimoto S, Mano T, Kurosaki T, Otani S, Miyoshi K, Yamane M, Miyoshi S, Oto T. Prolonged Administration of Twice Daily Bolus Intravenous Tacrolimus Early after Lung Transplantation. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.676] [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: 11/25/2022] Open
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Irie M, Sugimoto S, Kurosaki T, Miyoshi K, Otani S, Yamane M, Oto T, Miyoshi S. Cadaveric Lobar Lung Transplantation Based on the Experiences of Living-Donor Lobar Lung Transplantation. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.1052] [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] Open
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Adiningrat A, Tanimura A, Miyoshi K, Hagita H, Yanuaryska RD, Arinawati DY, Horiguchi T, Noma T. Isolation and characterization of dental epithelial cells derived from amelogenesis imperfecta rat. Oral Dis 2015; 22:132-9. [PMID: 26582753 DOI: 10.1111/odi.12396] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Revised: 10/29/2015] [Accepted: 11/09/2015] [Indexed: 01/28/2023]
Abstract
OBJECTIVE Disruption of the third zinc finger domain of specificity protein 6 (SP6) presents an enamel-specific defect in a rat model of amelogenesis imperfecta (AMI rats). To understand the molecular basis of amelogenesis imperfecta caused by the Sp6 mutation, we established and characterized AMI-derived rat dental epithelial (ARE) cells. MATERIALS AND METHODS ARE cell clones were isolated from the mandibular incisors of AMI rats, and amelogenesis-related gene expression was analyzed by reverse transcription polymerase chain reaction (RT-PCR). Localization of wild-type SP6 (SP6WT) and mutant-type SP6 (SP6AMI) was analyzed by immunocytochemistry. SP6 transcriptional activity was monitored by rho-associated protein kinase 1 (Rock1) promoter activity with its specific binding to the promoter region in dental (G5 and ARE) and non-dental (COS-7) epithelial cells. RESULTS Isolated ARE cells were varied in morphology and gene expression. Both SP6WT and SP6AMI were mainly detected in nuclei. The promoter analysis revealed that SP6WT and SP6AMI enhanced Rock1 promoter activity in G5 cells but that enhancement by SP6AMI was weaker, whereas no enhancement was observed in the ARE and COS-7 cells, even though SP6WT and SP6AMI bound to the promoter in all instances. CONCLUSION ARE cell clones can provide a useful in vitro model to study the mechanism of SP6-mediated amelogenesis imperfecta.
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Affiliation(s)
- A Adiningrat
- Graduate School of Oral Sciences, Tokushima University, Tokushima, Japan
| | - A Tanimura
- Department of Molecular Biology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - K Miyoshi
- Department of Molecular Biology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - H Hagita
- Department of Molecular Biology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - R D Yanuaryska
- Graduate School of Oral Sciences, Tokushima University, Tokushima, Japan.,Department of Dentomaxillofacial Radiology, Faculty of Dentistry, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - D Y Arinawati
- Graduate School of Oral Sciences, Tokushima University, Tokushima, Japan
| | - T Horiguchi
- Department of Molecular Biology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - T Noma
- Department of Molecular Biology, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
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Hasegawa R, Miyoshi K, Islam M, Tomiyama N. P-133: Lower half of leg length influenced 30 seconds chair stand test in community-dwelling older adults. Eur Geriatr Med 2015. [DOI: 10.1016/s1878-7649(15)30235-7] [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: 11/28/2022]
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Sato M, Kagoshima A, Saitoh I, Inada E, Miyoshi K, Ohtsuka M, Nakamura S, Sakurai T, Watanabe S. Generation ofα-1,3-Galactosyltransferase-Deficient Porcine Embryonic Fibroblasts by CRISPR/Cas9-Mediated Knock-in of a Small Mutated Sequence and a Targeted Toxin-Based Selection System. Reprod Domest Anim 2015; 50:872-80. [DOI: 10.1111/rda.12565] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 05/24/2015] [Indexed: 12/26/2022]
Affiliation(s)
- M Sato
- Section of Gene Expression Regulation; Frontier Science Research Center; Kagoshima University; Kagoshima Japan
| | - A Kagoshima
- Division of Pediatric Dentistry; Department of Oral Health Sciences; Course for Oral Life Science; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - I Saitoh
- Division of Pediatric Dentistry; Department of Oral Health Sciences; Course for Oral Life Science; Graduate School of Medical and Dental Sciences; Niigata University; Niigata Japan
| | - E Inada
- Department of Pediatric Dentistry; Graduate School of Medical and Dental Sciences; Kagoshima University; Kagoshima Japan
| | - K Miyoshi
- Laboratory of Animal Reproduction; Faculty of Agriculture; Kagoshima University; Kagoshima Japan
| | - M Ohtsuka
- Division of Basic Molecular Science and Molecular Medicine; School of Medicine; Tokai University; Kanagawa Japan
| | - S Nakamura
- Division of Biomedical Engineering; National Defense Medical College Research Institute; Saitama Japan
| | - T Sakurai
- Department of Cardiovascular Research; Graduate School of Medicine; Shinshu University; Nagano Japan
| | - S Watanabe
- Animal Genome Research Unit; Division of Animal Science; National Institute of Agrobiological Sciences; Ibaraki Japan
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Yokokawa Y, Miyoshi K, Nishikawa R, Nishizawa H, An Cheng G, Kai I. Effects of the combined task training program using square-stepping nets on walking speed of healthy elderly. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.107] [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] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Miyoshi K, Oto T, Sugimoto S, Yamane M, Miyoshi S. Chronic Lung Allograft Dysfunction After Bilateral Living Donor Lobar Lung Transplantation. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.108] [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: 10/23/2022] Open
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42
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Hoshikawa Y, Okada Y, Ashikari J, Matsuda Y, Niikawa H, Noda M, Sado T, Watanabe T, Notsuda H, Chen F, Inoue M, Miyoshi K, Shiraishi T, Miyazaki T, Chida M, Fukushima N, Kondo T. Medical Consultant System for Improving Lung Transplantation Opportunities and Outcomes in Japan. Transplant Proc 2015; 47:746-50. [DOI: 10.1016/j.transproceed.2014.12.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 12/31/2014] [Indexed: 11/16/2022]
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Sugimoto S, Oto T, Okada M, Iga N, Miyoshi K, Yamane M, Miyoshi S. Update on the Outcomes of Lung Transplantation After Hematopoietic Stem Cell Transplantation: A Single-Center Experience. J Heart Lung Transplant 2015. [DOI: 10.1016/j.healun.2015.01.710] [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: 10/23/2022] Open
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Fukuoka T, Miyoshi K, Noguchi K. De novo expression of Nav1.7 in injured putative proprioceptive afferents: Multiple tetrodotoxin-sensitive sodium channels are retained in the rat dorsal root after spinal nerve ligation. Neuroscience 2014; 284:693-706. [PMID: 25453779 DOI: 10.1016/j.neuroscience.2014.10.027] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [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: 07/17/2014] [Revised: 10/11/2014] [Accepted: 10/14/2014] [Indexed: 12/23/2022]
Abstract
Tetrodotoxin-sensitive (TTX-s) spontaneous activity is recorded from the dorsal roots after peripheral nerve injury. Primary sensory neurons in the dorsal root ganglion (DRG) express multiple TTX-s voltage-gated sodium channel α-subunits (Navs). Since Nav1.3 increases, whereas all other Navs decrease, in the DRG neurons after peripheral nerve lesion, Nav1.3 is proposed to be critical for the generation of these spontaneous discharges and the contributions of other Navs have been ignored. Here, we re-evaluate the changes in expression of three other TTX-s Navs, Nav1.1, Nav1.6 and Nav1.7, in the injured 5th lumbar (L5) primary afferent components following L5 spinal nerve ligation (SNL) using in situ hybridization histochemistry and immunohistochemistry. While the overall signal intensities for these Nav mRNAs decreased, many injured DRG neurons still expressed these transcripts at clearly detectable levels. All these Nav proteins accumulated at the proximal stump of the ligated L5 spinal nerve. The immunostaining patterns of Nav1.6 and Nav1.7 associated with the nodes of Ranvier were maintained in the ipsilateral L5 dorsal root. Interestingly, putative proprioceptive neurons characterized by α3 Na+/K+ ATPase-immunostaining specifically lacked Nav1.7 mRNA in naïve DRG but displayed de novo expression of this transcript following SNL. Nav1.7-immunoreactive fibers were significantly increased in the ipsilateral gracile nucleus where central axonal branches of the injured A-fiber afferents terminated. These data indicate that multiple TTX-s channel subunits could contribute to the generation and propagation of the spontaneous discharges in the injured primary afferents. Specifically, Nav1.7 may cause some functional changes in sensory processing in the gracile nucleus after peripheral nerve injury.
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Affiliation(s)
- T Fukuoka
- Department of Anatomy & Neuroscience, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
| | - K Miyoshi
- Department of Anatomy & Neuroscience, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - K Noguchi
- Department of Anatomy & Neuroscience, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
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Yamamoto N, Murakami H, Hayashi H, Fujisaka Y, Hirashima T, Takeda K, Satouchi M, Miyoshi K, Akinaga S, Takahashi T, Nakagawa K. CYP2C19 genotype-based phase I studies of a c-Met inhibitor tivantinib in combination with erlotinib, in advanced/metastatic non-small cell lung cancer. Br J Cancer 2013; 109:2803-9. [PMID: 24169346 PMCID: PMC3844902 DOI: 10.1038/bjc.2013.588] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Revised: 08/23/2013] [Accepted: 09/04/2013] [Indexed: 12/15/2022] Open
Abstract
Background: A previous clinical study in non-small cell lung cancer (NSCLC) patients in Western countries suggested the potential for combination of a first-in-class non-ATP-competitive c-Met inhibitor tivantinib with an epidermal growth factor receptor-tyrosine kinase inhibitor erlotinib. Polymorphisms of CYP2C19, the key metabolic enzyme for tivantinib, should be addressed to translate the previous Western study to Asian population, because higher incidence of poor metabolisers (PMs) is reported in Asian population. Methods: Japanese patients with advanced/metastatic NSCLC received tivantinib in combination with erlotinib to evaluate safety and pharmacokinetics. Doses of tivantinib were escalated separately for extensive metabolisers (EMs) and PMs. Results: Tivantinib, when combined with erlotinib, was well tolerated up to 360 mg BID for EMs and 240 mg BID for PMs, respectively. Among 25 patients (16 EMs and 9 PMs), the adverse events (AEs) related to tivantinib and/or erlotinib (>20%, any grade) were rash, diarrhoea, dry skin and nausea. Grade ⩾3 AEs were leukopenia, anaemia and neutropenia. No dose-limiting toxicity was observed. Pharmacokinetics profile of tivantinib was not clearly different between the combination and monotherapy. Three partial response and three long-term stable disease (⩾24 weeks) were reported. Conclusion: Two doses of tivantinib in combination with erlotinib were recommended based on CYP2C19 genotype: 360 mg BID for EMs and 240 mg BID for PMs.
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Affiliation(s)
- N Yamamoto
- Division of Thoracic Oncology, Shizuoka Cancer Center, 1007, Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan
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Iwaya K, Ogawa T, Minato T, Miyoshi K, Takeuchi J, Kuwabara A, Moriwake H, Kim Y, Hitosugi T. Impact of lithium-ion ordering on surface electronic states of Li(x)CoO2. Phys Rev Lett 2013; 111:126104. [PMID: 24093280 DOI: 10.1103/physrevlett.111.126104] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Indexed: 06/02/2023]
Abstract
Li(x)CoO(2) exhibits intriguing electronic properties due to a strong electron correlation and complex interplay between Co and Li ions. However, fundamental understanding of the nanoscale distribution of Li ions and its effect on the electronic properties remains unclear. We use scanning tunneling microscopy and density functional theory to elucidate the degree of Li(x)CoO(2) surface electronic state modification that can be achieved by Li ordering. The surface Li ions are highly mobile and preferentially form a (1 × 1) hexagonal lattice, whereas the surface CoO(2) layer shows metallic and insulating phases, indicating the coexistence of ordered and disordered Li ions in the subsurface layer. These results provide evidence of novel electronic properties produced by spatially inhomogeneous Li-ordering patterns.
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Affiliation(s)
- K Iwaya
- Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan and Center for Emergent Matter Science, RIKEN, Wako, Saitama 351-0198, Japan
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Mizokawa T, Wakisaka Y, Sudayama T, Iwai C, Miyoshi K, Takeuchi J, Wadati H, Hawthorn DG, Regier TZ, Sawatzky GA. Role of oxygen holes in Li(x)CoO(2) revealed by soft X-ray spectroscopy. Phys Rev Lett 2013; 111:056404. [PMID: 23952425 DOI: 10.1103/physrevlett.111.056404] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Indexed: 06/02/2023]
Abstract
The fundamental electronic structure of the widely used battery material Li(x)CoO(2) still remains a mystery. Soft x-ray absorption spectroscopy of Li(x)CoO(2) reveals that holes with strong O 2p character play an essential role in the electronic conductivity of the Co(3+)/Co(4+) mixed valence CoO(2) layer. The oxygen holes are bound to the Co(4+) sites and the Li-ion vacancy, suggesting that the Li-ion flow can be stabilized by oxygen hole back flow. Such an oxygen hole state of Li(x)CoO(2) is unique among the various oxide-based battery materials and is one of the key ingredients to improving their electronic and Li-ion conductivities.
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Affiliation(s)
- T Mizokawa
- Department of Physics and Department of Complexity Science and Engineering, University of Tokyo, Chiba 277-8561, Japan
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Sugimoto S, Oto T, Miyoshi K, Nishikawa H, Nakatani A, Yamane M, Miyoshi S. Lung Transplantation for Diffuse Panbronchiolitis. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.456] [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: 10/27/2022] Open
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Okada M, Yamane M, Iga N, Nishikawa H, Yamamoto S, Otani S, Waki N, Hirayama S, Miyoshi K, Sugimoto S, Toyooka S, Oto T, Matsukawa A, Miyoshi S. MAPK/ERK Pathway Activation Leads to Severe Ischemia-Reperfusion-Induced Lung Injury. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.309] [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: 11/30/2022] Open
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Yamane M, Oto T, Miyoshi K, Sugimoto S, Miyoshi S. Evaluation of the Suitability of Lungs Procured from Marginal Donors. Transplantation 2012. [DOI: 10.1097/00007890-201211271-01851] [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: 11/25/2022]
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