Faculty Profiles - NAGANAWA, Shinji

Papers - NAGANAWA, Shinji

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Clinical usefulness of MLCs in robotic radiosurgery systems for prostate SBRT. Reviewed Open Access

Masashi Tomida, Takeshi Kamomae, Junji Suzuki, Yoichi Ohashi, Yoshiyuki Itoh, Hiroshi Oguchi, Takahito Okuda

J Appl Clin Med Phys. Vol. 18 ( 5 ) page： 124-133 2017.9

Quantitative evaluation of interstitial pneumonia using 3D-curved high-resolution CT imaging parallel to the chest wall: A pilot study. Reviewed Open Access

Hiroyasu Umakoshi, Shingo Iwano, Tsutomu Inoue, Yuanzhong Li, Shinji Naganawa

PLoS One. Vol. 12 ( 9 ) page： e0185532. 2017.9

Significance of Endolymphatic Hydrops in Ears With Unilateral Sensorineural Hearing Loss. International journal

Yuriko Okazaki, Tadao Yoshida, Satofumi Sugimoto, Masaaki Teranishi, Ken Kato, Shinji Naganawa, Michihiko Sone

Otology & neurotology : official publication of the American Otological Society, American Neurotology Society [and] European Academy of Otology and Neurotology Vol. 38 ( 8 ) page： 1076 - 1080 2017.9

Language：English Publishing type：Research paper (scientific journal)

OBJECTIVE: The purpose of this study was to investigate the existence of endolymphatic hydrops (EH) in affected and unaffected ears in patients with unilateral sensorineural hearing loss (SNHL) using contrast-enhanced magnetic resonance imaging (MRI), and to evaluate the significance of EH in various otological diseases. STUDY DESIGN: Retrospective study. SETTING: University hospital. METHODS: One hundred eighty-two ears from 91 patients with unilateral SNHL were studied. The endolymphatic space was evaluated using 3-Tesla MRI with gadodiamide hydrate. Imaging data about the degree of EH in the cochlea and vestibule were analyzed and compared between ears with various otological diseases. RESULTS: All affected ears with delayed endolymphatic hydrops had EH. In affected ears with definite Menière's disease, cochlear EH was observed in all ears and vestibular EH in 93% of ears, and these rates were significantly higher in the affected than in the unaffected ears. EH was also observed in the cochlea and vestibule in 66% and 41%, respectively, of the affected ears with idiopathic sudden SNHL; however, these percentages did not differ significantly from those in the unaffected ears (52% and 38%, respectively). CONCLUSION: MRI showed that a high percentage of ears affected by Menière's disease or delayed endolymphatic hydrops had EH. Further studies should evaluate the implications of EH in ears, especially in those with sudden SNHL, in terms of secondary or pre-existing EH.

DOI： 10.1097/MAO.0000000000001499

Web of Science

PubMed

Letter to Editors: Detection of endolymphatic hydrops using traditional MR imaging sequences

Shinji Naganawa, Michihiko Sone

American Journal of Otolaryngology - Head and Neck Medicine and Surgery Vol. 38 ( 5 ) page： 637 - 638 2017.9

A comparative analysis of dual-phase dual-energy CT and FDG-PET/CT for the prediction of histopathological invasiveness of non-small cell lung cancer. Reviewed

Rintaro Ito, Shingo Iwano, Hironori Shimamoto, Hiroyasu Umakoshi, Koji Kawaguchi, Shinji Ito, Katsuhiko Kato, Shinji Naganawa

European Journal of Radiology. ( 95 ) page： 186-191 2017.8

Optimized treatment strategy of radiotherapy for early glottic squamous cell carcinomas: An initial analysis. Reviewed Open Access

Kana Kimura, Yoshiyuki Itoh, Tohru Okada, Seiji Kubota, Mariko Kawamura, Rie Nakahara, Yumi Oie, Yuka Kozai, Yuuki Takase, Hidenori Tsuzuki, Naoki Nishio, Mariko Hiramatsu, Yasushi Fujimoto, Takefumi Mizutani, Shinji Naganawa

Nagoya J Med Sci. Vol. 79 ( 3 ) page： 331-338 2017.8

FDG-PET/CT predicts survival and lung metastasis of hypopharyngeal cancer in a multi-institutional retrospective study. Reviewed

Hidenori Suzuki, Katsuhiko Kato, Masami Nishio, Tsuneo Tamaki, Yasushi Fujimoto, Mariko Hiramatsu, Nobuhiro Hanai, Takeshi Kodaira, Yoshiyuki Itoh, Shinji Naganawa, Michihiko Sone, Yasuhisa Hasegawa

Annals of nuclear medicine Vol. 31 ( 7 ) page： 514 - 520 2017.8

Language：English Publishing type：Research paper (scientific journal)

OBJECTIVES: We investigated a possible correlation between the maximum standardized uptake value (SUVmax), which is assessed by pretreatment 18F-fluorodeoxyglucose positron emission tomography with computed tomography, and the overall survival (OS) in patients with hypopharyngeal squamous cell carcinoma from two institutions on long-term follow-up, and examined whether SUVmax is correlated with several survival outcomes, including lung metastasis-free survival. METHODS: A total of 81 patients were enrolled. The survival rate was calculated by the Kaplan-Meier method. Both univariate and multivariate survival analyses were assessed by a Cox proportional hazards model. RESULTS: SUVmax ≥15.2 in institution A (p = 0.0306) or SUVmax ≥8 in institution B (p = 0.0132) was significantly predictor of a lower OS. We disaggregated the data by high SUVmax (SUVmax ≥15.2 from institution A and SUVmax ≥8 from institution B) and low SUVmax (SUVmax <15.2 from institution A and SUVmax <8 from institution B). Patients with a high SUVmax exhibited a significantly lower OS in both univariate (p = 0.001) and multivariate (p = 0.0046) analyses for adjusted for the clinical stage and treatment group. The patients with a high SUVmax exhibited significantly shorter disease-specific (p = 0.0068), distant metastasis-free (p = 0.0428), and lung metastasis-free (p = 0.0328) survivals. CONCLUSIONS: High SUVmax was significantly correlated with a lower OS, disease-specific survival, distant metastasis-free survival, and lung metastasis-free survival in a multi-institutional retrospective study.

DOI： 10.1007/s12149-017-1176-1

Web of Science

PubMed

Optimized treatment strategy of radiotherapy for early glottic squamous cell carcinomas: An initial analysis. Reviewed Open Access

Nagoya journal of medical science Vol. 79 ( 3 ) page： 331 - 338 2017.8

Language：English Publishing type：Research paper (scientific journal)

The purpose of this study was to evaluate the clinical outcomes of radiotherapy for patients with T1/T2 glottic carcinoma. Patients with T1/T2 glottic carcinoma histopathologically diagnosed with squamous cell carcinoma and treated at our hospital between 2007 and 2015 were analyzed retrospectively. Our strategy for T1/T2 glottic carcinoma was as follows: radiotherapy alone with 2.25 Gy per fraction to a total of 25-28 fractions for patients with non-bulky T1 glottic carcinoma; concurrent chemoradiotherapy with oral S-1 and radiotherapy with 2 Gy per fraction to a total of 30 fractions for patients with T1 bulky/T2 favorable glottic carcinoma; or chemoradiotherapy with high-dose cisplatin and radiotherapy with 2 Gy per fraction to a total of 35 fractions for T2 unfavorable glottic carcinoma. Forty-eight patients were eligible. The median follow-up period among surviving patients was 38 months (range, 11-107). The disease was T1a in 23%, T1b in 13%, and T2 in 65% of patients. The 3-year local control rate in all patients, T1a, T1b, and T2 was 96.7%, 100%, 100%, and 96.0%, respectively. Of the 46 patients, one with T2 glottic carcinoma developed recurrent disease at the primary site, and one with T2 glottic carcinoma had lymph node recurrences in the neck. Acute Grade 3 dermatitis occurred in 8 (17%) patients and late Grade 2 hypothyroidism occurred in 2 (4%) patients. This retrospective study shows that our optimized treatment strategy of radiotherapy depending on the stage of early glottic carcinoma is not only effective but also well-tolerated.

DOI： 10.18999/nagjms.79.3.331

Open Access

Web of Science

PubMed

Portal Vein Bleeding after Pancreatectomy: Diagnosis and Stent Graft Repair - A Consecutive Case Series

Suzuki Kojiro, Ebata Tomoki, Komada Tomohiro, Matsushima Masaya, Mizuno Takashi, Igami Tsuyoshi, Sugawara Gen, Yokoyama Yukihiro, Naganawa Shinji, Nagino Masato

JOURNAL OF THE PANCREAS Vol. 18 ( 4 ) page： 339 - 344 2017.7

Progression of mean pulmonary arterial pressure in idiopathic pulmonary fibrosis with mild to moderate restriction Reviewed

Ryo Teramachi, Hiroyuki Taniguchi, Yasuhiro Kondoh, Masahiko Ando, Tomoki Kimura, Kensuke Kataoka, Atsushi Suzuki, Taiki Furukawa, Koji Sakamoto, Yoshinori Hasegawa

RESPIROLOGY Vol. 22 ( 5 ) page： 986 - 990 2017.7

Language：English Publishing type：Research paper (scientific journal) Publisher：WILEY

Background and objectiveElevation of mean pulmonary arterial pressure (MPAP) is associated with poor prognosis in patients with idiopathic pulmonary fibrosis (IPF), yet the progression of MPAP in patients with IPF has not been sufficiently elucidated. We evaluated serial changes in MPAP and its determinants in patients with IPF with mild to moderate restriction.
MethodsWe retrospectively reviewed patients with IPF who underwent initial evaluations including right heart catheterization (RHC) in our institute from May 2007 to December 2013 with follow-up RHC at least 1year later. Patients with forced vital capacity (FVC)<50% predicted or those with pulmonary artery wedge pressure>15mm Hg were excluded.
ResultsA total of 95 patients were included. Median follow-up time of second RHC was 1.8years. MPAP increased significantly at follow-up (from 16.8 to 20.2mm Hg; P<0.001), and annual change in MPAP (MPAP) was 1.8mm Hg/year. In multiple regression analysis, the lowest oxygen saturation (SpO(2) ) at 6-min walk test (6MWT) was an independent predictor of MPAP. When adjusted for age, sex, baseline MPAP and FVC % predicted, MPAP was a significant predictor of mortality (hazard ratio: 1.21; P=0.001).
ConclusionMPAP was significantly associated with desaturation in the 6MWT, and with increased mortality in patients with IPF with mild to moderate restriction.
We reviewed patients with idiopathic pulmonary fibrosis with mild to moderate restriction and showed that mean pulmonary arterial pressure (MPAP) was progressive. The lowest oxygen saturation (SpO(2) ) in the 6-min walk test at baseline was an independent predictor of annual change in MPAP.

DOI： 10.1111/resp.12986

Web of Science

Effect of Gadolinium Deposition on 18F-FDG PET/CT of Dentate Nucleus and Globus Pallidus. Reviewed

Shinji Naganawa

J Nucl Med Technol. Vol. 45 ( 2 ) page： 173 2017.6

Letter to Editors: Detection of endolymphatic hydrops using traditional MR imaging sequences. Reviewed

Shinji Naganawa, Michihiko Sone

Am J Otolaryngol. ( 17 ) page： 30378-2 2017.6

FDG PET/CT Overcomes Discordance Between Clinical and Pathologic TNM Classification of Small-size Primary Lung Cancer: Influence on Postoperative Prognosis. Reviewed Open Access

Hiroyasu Umakoshi, Shingo Iwano, Kohei Yokoi, Shinji Ito, Rintaro Ito, Koji Kawaguchi, Takayuki Fukui, Shinji Naganawa

Clin Lung Cancer. ( 17 ) page： 30170-5 2017.6

Relationship between Contrast Enhancement of the Perivascular Space in the Basal Ganglia and Endolymphatic Volume Ratio. Reviewed Open Access

Toshio Ohashi, Shinji Naganawa, Toshio Katagiri, Kayao Kuno

Magn Reson Med Sci. 2017.6

【MRI最前線】ガドリニウム造影剤と脳脊髄液 glymphaticシステムとは何か? Reviewed

田岡俊昭, 長縄慎二

臨床画像 Vol. 33 ( 6 ) page： 652 - 663 2017.6

Authorship：Last author Language：Japanese Publishing type：Research paper (scientific journal) Publisher：(株)メジカルビュー社

2012年にNedergaardらにより,脳内の老廃物排出系としてのglymphaticシステムが提唱された。この仮説では血管周囲腔と,それを囲むグリアのエンドフィートを介した脳脊髄液による,脳組織の洗い流しによる老廃物の排出を想定している。この仮説と脳内のガドリニウム沈着の関連に関して考察したい。(著者抄録)

DOI： 10.18885/j01843.2017276845

Other Link： https://search.jamas.or.jp/default/link?pub_year=2017&ichushi_jid=J01843&link_issn=&doc_id=20170605150003&doc_link_id=%2Fap4ringc%2F2017%2F003306%2F004%2F0652-0663%26dl%3D0&url=https%3A%2F%2Fwww.medicalonline.jp%2Fjamas.php%3FGoodsID%3D%2Fap4ringc%2F2017%2F003306%2F004%2F0652-0663%26dl%3D0&type=MedicalOnline&icon=https%3A%2F%2Fjk04.jamas.or.jp%2Ficon%2F00004_2.gif

Comparison of accumulation of F-18-FLT PET/CT with histopathological findings of primary and metastatic lesions of urinary tract tumors Reviewed

Katsuhiko Kato, Shinji Abe, Shinichiro Matsuzawa, Ryuto Mukumoto, Tetsuro Odagawa, Shinji Naganawa

JOURNAL OF NUCLEAR MEDICINE Vol. 58 page： . 2017.5

Clinical outcome of definitive radiation therapy for superficial esophageal cancer. Reviewed International journal

Yutaro Koide, Takeshi Kodaira, Hiroyuki Tachibana, Natsuo Tomita, Chiyoko Makita, Makoto Itoh, Tetsuya Abe, Kei Muro, Masahiro Tajika, Yasumasa Niwa, Yoshiyuki Itoh, Shinji Naganawa

Japanese journal of clinical oncology Vol. 47 ( 5 ) page： 393 - 400 2017.5

Authorship：Last author Language：English Publishing type：Research paper (scientific journal)

Objective: To analyze the clinical outcome of concurrent chemoradiotherapy in superficial esophageal cancer patients. Methods: We retrospectively analyzed data for 123 patients with superficial esophageal cancer who received external beam radiotherapy without intracavitary brachytherapy plus systemic chemotherapy during 1998-2015. Elective nodal irradiation was not performed. The dosage to planning treatment volume was 60 Gy in 30 fractions. The main outcome measure was overall survival. Results: Patient characteristics were as follows: median age, 66 (41-83) years; male/female ratio, 106/17; squamous cell carcinoma/other, 122/1; cT1a/cT1b, 27/96; cervical esophagus/upper thoracic esophagus/middle thoracic esophagus/lower thoracic esophagus, 7/9/66/41 and concurrent chemoradiotherapy/radiotherapy alone, 100/23. Cisplatin and 5-fluorouracil were the most commonly used agents (85%). At the last follow-up (median 60.5 months), 91 (74%) patients were alive. Complete response was achieved in 116 (94.4%) patients. The 5-year overall survival, progression-free survival and local control rates were 77.0, 46.9 and 62.7%, respectively, similar to that in the elderly patients (P = 0.878, 0.754 and 0.648, respectively). There were 55 failures: 42 local, 10 regional and 3 distant failures. Nine local and seven regional failures developed out-of-field. Thirty-eight local failures (90%) were successfully salvaged, of which 30 (71%) were salvaged via endoscopic removal; only 2 regional failures (20%) were salvaged. Fifteen G3 acute toxicities occurred. One pneumonitis (G3), one pneumothorax (G3) and two pericardial effusion (G2) were the late toxicities observed. There were no G4 toxicities or treatment-related deaths. Conclusions: Concurrent chemoradiotherapy without intracavitary brachytherapy was effective and safe for superficial esophageal cancer, even in elderly patients.

DOI： 10.1093/jjco/hyx021

PubMed

Clinical outcome of definitive radiation therapy for superficial esophageal cancer. Reviewed

Yutaro Koide, Takeshi Kodaira, Hiroyuki Tachibana, Natsuo Tomita, Chiyoko Makita, Makoto Itoh, Tetsuya Abe, Kei Muro, Masahiro Tajika, Yasumasa Niwa, Yoshiyuki Itoh, Shinji Naganawa

Jpn J Clin Oncol. Vol. 47 ( 5 ) page： 393-400 2017.5

Portal Vein Bleeding after Pancreatectomy: Diagnosis and Stent Graft Repair - A Consecutive Case Series. Reviewed

Kojiro Suzuki, Tomoki Ebata, Tomohiro Komada, Masaya Matsushima, Takashi Mizuno, Tsuyoshi Igami, Gen Sugawara, Yukihiro Yokoyama, Shinji Naganawa, Masato Nagino

Journal of the Pancreas. Vol. 18 ( 3 ) page： 241-246 2017.5

Improved HYDROPS: Imaging of Endolymphatic Hydrops after Intravenous Administration of Gadolinium. Reviewed Open Access

Shinji Naganawa, Hisashi Kawai, Toshiaki Taoka, Michihiko Sone,

Magn Reson Med Sci. Vol. 16 ( 4 ) page： 357-361 2017.5

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Papers - NAGANAWA, Shinji