Prof. Hitoshi Satoh Profile

Prof. Hitoshi Satoh

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Publications (12)

Proceedings Article | 19 March 2014 Paper

Teleradiology mobile internet system with a new information security solution

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Hironobu Ohmatsu, Masahiko Kusumoto, Masahiro Kaneko, Noriyuki Moriyama

Proceedings Volume 9039, 90390R (2014) https://doi.org/10.1117/12.2043377

KEYWORDS: Data centers, Medical imaging, Teleradiology, Information security, Internet, Computer networks, Cryptography, Picture Archiving and Communication System, Computed tomography, Network security

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We have developed an external storage system by using secret sharing scheme and tokenization for regional medical cooperation, PHR service and information preservation. The use of mobile devices such as smart phones and tablets will be accelerated for a PHR service, and the confidential medical information is exposed to the risk of damage and intercept. We verified the transfer rate of the sending and receiving of data to and from the external storage system that connected it with PACS by the Internet this time. External storage systems are the data centers that exist in Okinawa, in Osaka, in Sapporo and in Tokyo by using secret sharing scheme. PACS continuously transmitted 382 CT images to the external data centers. Total capacity of the CT images is about 200MB. The total time that had been required to transmit was about 250 seconds. Because the preservation method to use secret sharing scheme is applied, security is strong. But, it also takes the information transfer time of this system too much. Therefore, DICOM data is masked to the header information part because it is made to anonymity in our method. The DICOM data made anonymous is preserved in the data base in the hospital. Header information including individual information is divided into two or more tallies by secret sharing scheme, and preserved at two or more external data centers. The token to relate the DICOM data anonymity made to header information preserved outside is strictly preserved in the token server. The capacity of header information that contains patient's individual information is only about 2% of the entire DICOM data. This total time that had been required to transmit was about 5 seconds. Other, common solutions that can protect computer communication networks from attacks are classified as cryptographic techniques or authentication techniques. Individual number IC card is connected with electronic certification authority of web medical image conference system. Individual number IC card is given only to the person to whom the authority to operate web medical image conference system was given.

Proceedings Article | 29 March 2013 Paper

Teleradiology network system on cloud using the web medical image conference system with a new information security solution

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Hironobu Ohmatsu, Masahiko Kusumoto, Masahiro Kaneko, Noriyuki Moriyama

Proceedings Volume 8674, 86740X (2013) https://doi.org/10.1117/12.2006983

KEYWORDS: Teleradiology, Medical imaging, Information security, Data centers, Computing systems, Network security, Cryptography, Computer networks, Databases, Computer aided diagnosis and therapy

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Proceedings Article | 28 February 2012 Open Access

Teleradiology network system using the web medical image conference system with a new information security solution

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Hironobu Ohmatsu, Masahiro Kusumoto, Masahiro Kaneko, Ryutaru Kakinuma, Noriyuki Moriyama

Proceedings Volume 8319, 83190Y (2012) https://doi.org/10.1117/12.911431

KEYWORDS: Data centers, Teleradiology, Medical imaging, Information security, Computing systems, Network security, Computed tomography, Cryptography, Computer networks, Databases

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Proceedings Article | 25 March 2011 Paper

Teleradiology network system and computer-aided diagnosis workstation using the web medical image conference system with a new information security solution

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Hironobu Ohmatsu, Masahiro Kaneko, Ryutaru Kakinuma, Noriyuki Moriyama

Proceedings Volume 7967, 796711 (2011) https://doi.org/10.1117/12.878035

KEYWORDS: Medical imaging, Computing systems, Data centers, Information security, Teleradiology, Computed tomography, Biometrics, Computer networks, Network security, Computer aided diagnosis and therapy

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Proceedings Article | 12 March 2010 Paper

Computer-aided diagnosis workstation and teleradiology network system for chest diagnosis using the web medical image conference system with a new information security solution

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Hironobu Ohmatsu, Masahiro Kaneko, Ryutaro Kakinuma, Noriyuki Moriyama

Proceedings Volume 7628, 762813 (2010) https://doi.org/10.1117/12.843948

KEYWORDS: Medical imaging, Teleradiology, Information security, Computer aided diagnosis and therapy, Computing systems, Diagnostics, Computed tomography, Biometrics, Network security, Arteries

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Diagnostic MDCT imaging requires a considerable number of images to be read. Moreover, the doctor who diagnoses a medical image is insufficient in Japan. Because of such a background, we have provided diagnostic assistance methods to medical screening specialists by developing a lung cancer screening algorithm that automatically detects suspected lung cancers in helical CT images, a coronary artery calcification screening algorithm that automatically detects suspected coronary artery calcification and a vertebra body analysis algorithm for quantitative evaluation of osteoporosis. We also have developed the teleradiology network system by using web medical image conference system. In the teleradiology network system, the security of information network is very important subjects. Our teleradiology network system can perform Web medical image conference in the medical institutions of a remote place using the web medical image conference system. We completed the basic proof experiment of the web medical image conference system with information security solution. We can share the screen of web medical image conference system from two or more web conference terminals at the same time. An opinion can be exchanged mutually by using a camera and a microphone that are connected with the workstation that builds in some diagnostic assistance methods. Biometric face authentication used on site of teleradiology makes "Encryption of file" and "Success in login" effective. Our Privacy and information security technology of information security solution ensures compliance with Japanese regulations. As a result, patients' private information is protected. Based on these diagnostic assistance methods, we have developed a new computer-aided workstation and a new teleradiology network that can display suspected lesions three-dimensionally in a short time. The results of this study indicate that our radiological information system without film by using computer-aided diagnosis workstation and our teleradiology network system can increase diagnostic speed, diagnostic accuracy and security improvement of medical information.

Proceedings Article | 14 March 2009 Paper

Computer-aided diagnosis workstation and telemedicine network system for chest diagnosis based on multislice CT images

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Hironobu Ohmatsu, Ryutaru Kakinuma, Noriyuki Moriyama

Proceedings Volume 7264, 726410 (2009) https://doi.org/10.1117/12.811623

KEYWORDS: Computed tomography, Lung cancer, Computer aided diagnosis and therapy, Biometrics, Medical imaging, Diagnostics, Telemedicine, Computing systems, Arteries, CAD systems

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Mass screening based on multi-helical CT images requires a considerable number of images to be read. It is this time-consuming step that makes the use of helical CT for mass screening impractical at present. Moreover, the doctor who diagnoses a medical image is insufficient in Japan. To overcome these problems, we have provided diagnostic assistance methods to medical screening specialists by developing a lung cancer screening algorithm that automatically detects suspected lung cancers in helical CT images, a coronary artery calcification screening algorithm that automatically detects suspected coronary artery calcification and a vertebra body analysis algorithm for quantitative evaluation of osteoporosis likelihood by using helical CT scanner for the lung cancer mass screening. The functions to observe suspicious shadow in detail are provided in computer-aided diagnosis workstation with these screening algorithms. We also have developed the telemedicine network by using Web medical image conference system with the security improvement of images transmission, Biometric fingerprint authentication system and Biometric face authentication system. Biometric face authentication used on site of telemedicine makes "Encryption of file" and "Success in login" effective. As a result, patients' private information is protected. We can share the screen of Web medical image conference system from two or more web conference terminals at the same time. An opinion can be exchanged mutually by using a camera and a microphone that are connected with workstation. Based on these diagnostic assistance methods, we have developed a new computer-aided workstation and a new telemedicine network that can display suspected lesions three-dimensionally in a short time. The results of this study indicate that our radiological information system without film by using computer-aided diagnosis workstation and our telemedicine network system can increase diagnostic speed, diagnostic accuracy and security improvement of medical information.

Proceedings Article | 11 March 2008 Paper

Computer-aided diagnosis workstation and network system for chest diagnosis based on multislice CT images

Hitoshi Satoh, Noboru Niki, Kenji Eguchi, Noriyuki Moriyama, Hironobu Ohmatsu, Hideo Masuda, Suguru Machida

Proceedings Volume 6919, 691916 (2008) https://doi.org/10.1117/12.770770

KEYWORDS: Computed tomography, Lung cancer, Computer aided diagnosis and therapy, Biometrics, Computing systems, Diagnostics, Arteries, Telemedicine, CAD systems, Chest

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Proceedings Article | 30 March 2007 Paper

Computer-aided diagnosis workstation and network system for chest diagnosis based on multislice CT images

Hitoshi Satoh, Noboru Niki, Kiyoshi Mori, Kenji Eguchi, Masahiro Kaneko, Ryutarou Kakinuma, Noriyuki Moriyama, Hironobu Ohmatsu, Hideo Masuda, Suguru Machida

Proceedings Volume 6516, 65161E (2007) https://doi.org/10.1117/12.708943

KEYWORDS: Computed tomography, Lung cancer, Computer aided diagnosis and therapy, Computing systems, Diagnostics, Arteries, Scanners, Biometrics, Chest, CAD systems

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Proceedings Article | 16 March 2006 Paper

Computer-aided diagnosis workstation and database system for chest diagnosis based on multihelical CT images

Hitoshi Satoh, Noboru Niki, Kiyoshi Mori, Kenji Eguchi, Masahiro Kaneko, Ryutarou Kakinuma, Noriyuki Moriyama, Hironobu Ohmatsu, Hideo Masuda, Suguru Machida, Michizou Sasagawa

Proceedings Volume 6145, 61450Y (2006) https://doi.org/10.1117/12.653133

KEYWORDS: Computed tomography, Lung cancer, Computer aided diagnosis and therapy, Computing systems, Arteries, Diagnostics, Biometrics, Chest, Databases, CAD systems

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Proceedings Article | 15 April 2005 Paper

Computer-aided diagnosis workstation for chest diagnosis based on multihelical CT images

Hitoshi Sato, Noboru Niki, Kiyoshi Mori, Kenji Eguchi, Masahiro Kaneko, Ryutarou Kakinuma, Noriyuki Moriyama, Hironobu Ohmatsu, Hideo Masuda, Suguru Machida, Michizou Sasagawa

Proceedings Volume 5748, (2005) https://doi.org/10.1117/12.595158

KEYWORDS: Computed tomography, Computer aided diagnosis and therapy, Lung cancer, Computing systems, Chest, Arteries, CAD systems, Image processing, Diagnostics, LCDs

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Proceedings Article | 19 April 2004 Paper

Computer-aided diagnosis workstation and database system for chest diagnosis based on multihelical CT images

Hitoshi Sato, Noboru Niki, Kiyoshi Mori, Kenji Eguchi, Masahiro Kaneko, Noriyuki Moriyama, Hironobu Ohmatsu, Ryutaro Kakinuma, Hideo Masuda, Suguru Machida, Michizou Sasagawa

Proceedings Volume 5371, (2004) https://doi.org/10.1117/12.535918

KEYWORDS: Computed tomography, Computing systems, Computer aided diagnosis and therapy, Lung cancer, Chest, Arteries, Databases, Lung, CAD systems, Cancer

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Proceedings Article | 19 May 2003 Paper

Innovation of PACS for computer-aided diagnosis with functions to assist comparative reading for lung cancer based on multi-helical CT images

Hitoshi Sato, Noboru Niki, Kiyoshi Mori, Kenji Eguchi, Masahiro Kaneko, Noriyuki Moriyama, Hironobu Ohmatsu, Ryutaro Kakinuma, Hideo Masuda, Suguru Machida, Michizou Sasagawa

Proceedings Volume 5033, (2003) https://doi.org/10.1117/12.480656

KEYWORDS: Computed tomography, CAD systems, Lung cancer, Lung, Computer aided diagnosis and therapy, X-ray computed tomography, Cancer, Image processing, Blood vessels, Feature extraction

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Showing 5 of 12 publications

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