著者

Kotaro BESSHO Kenji DATE Masahiro HAYASHI Akio IKEDA Takahito IMAI Hidekazu INOUE Yukihiro KUMAGAI Takuya MIYAKAWA Hidehiko MURATA Tomoo OHNO Arata OKUYAMA Ryo OYAMA Yukio SASAKI Yoshio SHIMAZU Kazuki SHIMOJI Yasuhiko SUMIDA Masuo SUZUKI Hidetaka TANIGUCHI Hiroaki TSUCHIYAMA Daisaku UESAWA Hironobu YOKOTA Ryo YOSHIDA

出版者

Meteorological Society of Japan

雑誌

気象集誌. 第2輯 (ISSN:00261165)

巻号頁・発行日

vol.94, no.2, pp.151-183, 2016 (Released:2016-04-28)

参考文献数

66

被引用文献数

143 885

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Himawari-8/9—a new generation of Japanese geostationary meteorological satellites-carry state-of-the-art optical sensors with significantly higher radiometric, spectral, and spatial resolution than those previously available in the geostationary orbit. They have 16 observation bands, and their spatial resolution is 0.5 or 1 km for visible and near-infrared bands and 2 km for infrared bands. These advantages, when combined with shortened revisit times (around 10 min for Full Disk and 2.5 min for sectored regions), provide new levels of capacity for the identification and tracking of rapidly changing weather phenomena and for the derivation of quantitative products. For example, fundamental cloud product is retrieved from observation data of Himawari-8 operationally. Based on the fundamental cloud product, Clear Sky Radiance and Atmospheric Motion Vector are processed for numerical weather prediction, and volcanic ash product and Aeolian dust product are created for disaster watching and environmental monitoring. Imageries from the satellites are distributed and disseminated to users via multiple paths, including Internet cloud services and communication satellite services.

著者

Akio IKEDA Yasunobu ANTOKU Toshi ABE Hiroshi NISHIMURA Hiroshi IWASHITA

出版者

The Japanese Society of Internal Medicine

雑誌

Japanese Journal of Medicine (ISSN:00215120)

巻号頁・発行日

vol.28, no.6, pp.740-743, 1989 (Released:2006-03-27)

参考文献数

10

被引用文献数

2 2

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A 62-year-old male Japanese, a heavy drinker for his last 40 years, was admitted to our hospital because of unstable gait of acute onset. Despite large doses of thiamine injection, his condition rapidly worsened with confusion, and died 15 days after the onset. During the deteriorating course, a series of Computerized Tomography (CT) and Magnetic Resonance Imaging (MRI) scans were taken of the brain, which revealed progressive multifocal involvement in the corpus callosum; Marchiafava-Bignami disease was suggested. To the authors' best knowledge, there have been no MRI examinations conducted from so early a stage of this disease on. MRI scanning proves to be a highly useful tool for early diagnosis of Marchiafava-Bignami disease.

著者

Shinako Inaida Kousuke Kanemoto Shiro Tanaka Yoko Gouji Tomohiro Oshima Riki Matsumoto Akio Ikeda Koji Kawakami

出版者

JAPAN EPILEPSY SOCIETY

雑誌

Epilepsy & Seizure (ISSN:18825567)

巻号頁・発行日

vol.10, no.1, pp.73-86, 2018 (Released:2018-09-08)

参考文献数

35

被引用文献数

3

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Purpose: Psychogenic non-epileptic seizures (PNES) are psychogenic disorders that often resemble epileptic seizures. Herein, we describe the recent clinical trends of PNES by using the data from a large, claims-based Japanese database obtained from the Japan Medical Data Center.Methods: A 10-year epidemiological study of patients of all ages with newly diagnosed PNES was conducted. Data were extracted using the International Classification of Diseases 10th Revision (ICD-10) diagnostic codes. Prevalence in new epilepsy patients and period of the diagnostic delay of PNES after epilepsy diagnosis were retrieved from the data. The study endpoint was change in frequency of hospital visits. Data of 413 patients with PNES were retrieved using the criterion of “PNES diagnosis after epilepsy diagnosis.”Results: The highest PNES prevalence in new epilepsy patients was observed in the 40-49 year age group (4.3%) for males, and in the 30-39 age group (4.9%) for females. The ratio of the prevalence in males to that in females was 1:2 for 0-9, 10-19, and >60 age groups, and 1:1 for the other age groups. A significant and positive correlation was found between the frequency of hospital visits and duration of the diagnostic delay of PNES. After PNES diagnosis, the average number of monthly hospital visits decreased over time.Discussion: The differences in the duration of diagnostic delay of PNES among cases and also a decrease in the frequency of hospital visits after PNES diagnosis highlight the importance of early differentiation between epilepsy and PNES.

著者

Masahiro Nagano Takashi Ayaki Natsuko Koita Toshiyuki Kitano Momoko Nishikori Naoki Goda Sachiko Minamiguchi Akio Ikeda Akifumi Takaori-Kondo Ryosuke Takahashi

出版者

The Japanese Society of Internal Medicine

雑誌

Internal Medicine (ISSN:09182918)

巻号頁・発行日

vol.58, no.6, pp.849-854, 2019-03-15 (Released:2019-03-15)

参考文献数

20

被引用文献数

4 8

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Primary central nervous system lymphoma (PCNSL) and chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids (CLIPPERS) can share clinical features and may be indistinguishable, even after brain biopsy. We encountered a case of Epstein-Barr virus-positive (EBV+) PCNSL recurrence in a patient with clinical features of CLIPPERS, and repeat brain biopsy was required to reach the correct diagnosis. Four years after the initial diagnosis and treatment of PCNSL, "peppering" punctate enhanced lesions with transient steroid responsiveness were detected during brain magnetic resonance imaging (MRI). A second brain biopsy supported a diagnosis of CLIPPERS, while a third biopsy confirmed the diagnosis of recurrent PCNSL.