Biomedical subjects

Masao Hashiba

Publications and source records attributed to Masao Hashiba.

5 recordsLinked to original sources

PubMed2004

A method for displaying two images on a screen in distance medical education.

This article describes a method for simultaneously displaying several images on a screen during an online multimedia presentation. Users with 'REALPLAYER' software and Web browsers can view images with synchronous audio on their personal computers via the Internet. Medical researchers and physicians often find it useful to compare images after treatment with those before treatment, by displaying several arranged images simultaneously. Medical care providers can browse this type of multimedia content in their offices and universities at their convenience. There presently exist two methods for creating multimedia content with voice and images using RealSystem technology. Electronic lectures of otorhinolaryngology explaining new surgical procedures for patients with chronic otitis media were created with this method and made available to otorhinolaryngologists through the Internet.

Computer Terminals↗

PubMed2004

MPEG digital compression and analogue videotape: a comparison of moving images and electroencephalogram data in epileptic patients.

PRIMARY OBJECTIVES: The objective of this study was to compare the clinical usefulness, in the field of epileptology, of digital moving images and electroencephalogram (EEG) waveforms by Motion Pictures Expert Group compression algorithms (MPEG-1 and MPEG-2) to that of conventional analogue recording. RESEARCH DESIGN AND METHODS: Three epileptic seizure scenes consisting of moving images and the corresponding EEG waveforms in an epileptic patient were selected as the images to be evaluated. Each scene was recorded using MPEG-1, MPEG-2 and videotape. Ten doctors used six criteria to evaluate the quality of moving images, EEG data and audio. MAIN OUTCOMES: Analysis of variance and Bonferroni tests indicated that the image quality of MPEG-2 was superior to that of MPEG-1 or videotape for all criteria. Furthermore, MPEG-2 obtained much higher scores in EEG waveform quality than did the other modalities. CONCLUSIONS: Our findings suggested that data from MPEG-2 images will lead to more precise diagnosis and treatment decision-making than data from analogue videotape recordings.

Data Compression↗

PubMed2003

Delivery of medical multimedia contents through the TCP/IP network using RealSystem.

We developed a low cost, user-friendly multimedia delivery system, to provide medical lectures saved as multimedia contents to persons engaged in medicine. This system was created using the RealSystem package with the TCP/IP network. Users can review lectures and medical meeting presentations with video and audio through the Internet, whenever convenient. Each medical source of video and slide has been clearly displayed on a screen. Members of medical associations or medical students can easily review the most interesting parts of these files. This system is being used efficiently in distance learning and aids the diffusion of the latest information and technology to busy physicians and medical students.

Computer-Assisted Instruction↗

PubMed2003

An integrated medical image database and retrieval system using a web application server.

We developed an Integrated Medical Image Database and Retrieval System (INIS) for easy access by medical staff. The INIS mainly consisted of four parts: specific servers to save medical images from multi-vendor modalities of CT, MRI, CR, ECG and endoscopy; an integrated image database (DB) server to save various kinds of images in a DICOM format; a Web application server to connect clients to the integrated image DB and the Web browser terminals connected to an HIS system. The INIS provided a common screen design to retrieve CT, MRI, CR, endoscopic and ECG images, and radiological reports, which would allow doctors to retrieve radiological images and corresponding reports, or ECG images of a patient simultaneously on a screen. Doctors working in internal medicine on average accessed information 492 times a month. Doctors working in cardiological and gastroenterological accessed information 308 times a month. Using the INIS, medical staff could browse all or parts of a patient's medical images and reports.

Databases, Factual↗

PubMed2002

A method to convert HDTV videos of broadcast satellite to RealSystem multimedia contents.

Recently, the Internet is widely used in the field of medicine. Daily use of e-mail for medical communication is very common. Also various information regarding hospitals can be accessed via the network. Apart from this practical use of the computer network, the mediums of telemedicine, tele-education, and telecare are also available. The Medical Information Network via Communications Satellite for University Hospital (MINCS-UH; http://www.umin.ac.jp/mincs/) was constructed by the Ministry of Education, Culture, Sports, Science and Technology. These programs feature high quality images viewed on High Definition Television (HDTV) through the Broadcast Satellite (BS). We have compiled a video library of MINCS-UH program contents with W-VHS tapes for HDTV and VHS or S-VHS tapesfor NTSC, available to medical staff in our university hospital through the Hospital local area network (Hospital intranet). We have also constructed a web-based streaming system that is a low cost, user-friendly multimedia delivery system capable of providing medical lectures. This system was constructed using the RealSystem package with the Internet Protocol (IP) network. Although the image quality of RealSystem is inferior to that of the original video, users can review lectures and medical congress presentations with video and audio through Hospital intranet, at any time that is convenient to them. This system can also be an efficient tool for distance learning and supports the diffusion of up-to-date information and technology to busy physicians via the Internet.

Education, Distance↗