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Dive into the research topics where Hideaki Okamoto is active.

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Featured researches published by Hideaki Okamoto.


Computer Methods and Programs in Biomedicine | 1994

Small PACS for digital medical images - reliability and security in a clinical setting

Chikazumi Kuroda; Hiroyasu Yoshioka; Tuyoshi Kadota; Yoshifumi Narumi; Hideaki Okamoto; Toshioki Kumatani; Osamu Hiruma; Yoji Kumatani; Jiro Yoshida

Recently we introduced a small Picture Archiving Communication System (PACS) for handling CT and MRI data. Our experience with this system has been useful in identifying potential problems in a clinical setting. Since the use of PACS raises both medical and social concerns, it cannot be instituted without addressing concerns related to the reliability and security issues. Although PACS is useful in the management of medical images, there are concerns about their reliability and security in a clinical setting. Reliability encompassed image quality, timeliness of the reports, and the PACS to the Radiological Information System (RIS) interface including the retrieval of the previously obtained images. The security of the patients medical data is also essential.


Japanese Journal of Radiological Technology | 2001

Effective Dose Estimations for Helical Computed Tomography in Lung Cancer Screening

Hideaki Okamoto; Masayoshi Miyazaki; Akitoshi Yoneda; Keiichi Suzuki; Kouki Ueda; Toshioki Kumatani; Masatoshi Sakamoto; Chikazumi Kuroda; Takaichiro Suzuki; Toru Matsumoto


Japanese Journal of Radiological Technology | 1999

Using a Mobile Helical CT Unit in the First Step of Lung Cancer Screening

Toshioki Kumatani; Hideaki Okamoto; Takashi Horinouchi; Hiroshi Maeda; Yasuo Hiura; Chikazumi Kuroda; Takaichirou Suzuki; Tooru Matsumoto


Japanese Journal of Radiological Technology | 1998

A trial of image data base construction for medicine by a personal computer

Osamu Hiruma; Hideaki Okamoto; Keiji Kasai; Hiroshi Maeda; Yasuo Hiura; Chikazumi Kuroda; Satoshi Sumitsuji


Japanese Journal of Radiological Technology | 1997

Introduction of Mobile Helical CT

Toshioki Kumatani; Hideaki Okamoto; Takashi Horinouchi; Hiroshi Maeda; Yasuo Hiura; Chikazumi Kuroda; T. Suzuki; Toru Matsumoto


Japanese Journal of Radiological Technology | 1997

371 Half Value Layer and X-ray Spectra of CT : Comparison of Three CT-scanners

Hideaki Okamoto; Toshioki Kumatani; Kouki Ueda; O Hiruma; Hiroshi Maeda; Yasuo Hiura; T Kuroda; T Suzuki; M Matumoto; T Matumoto


Japanese Journal of Radiological Technology | 1996

Evaluation of digital spot mammography system : StereoGuide, DSM

Masanori Takeshita; Tadashi Nakajima; Hideaki Okamoto; Hideo Kobayashi; Masaji Okazaki; Yuka Sawai; Chikazumi Kuroda


Japanese Journal of Radiological Technology | 1995

505 Improvement of needle guide on stereotactic needle aspiration biopsy examination

Hideaki Okamoto; Tadashi Nakajima; Masanori Takeshita; Hideo Kobayashi; Masaji Okazaki; Yuka Sawai


Japanese Journal of Radiological Technology | 1994

60. Comparison of ^ Tc-GSA SPECT and X-CT for measured of liver volume

Atsushi Noguchi; Terumi Hashizume; Keijirou Ibuka; Hideaki Okamoto; Toshioki Kumatani; Hiroshi Maeda


Japanese Journal of Radiological Technology | 1994

89. Processor cycle time in mammography

Hideaki Okamoto; Tadashi Nakajima; Masamori Takeshita; Hideo Kobayashi

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Toru Matsumoto

National Institute of Radiological Sciences

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