Multimedia systems for telemedicine and their communications requirements
TL;DR: A telemedicine prototype is presented, each of its components discussed, and a potential future teleMedicine system is shown.
Abstract: Telemedicine is much more than just teleconferencing. ISDN could be used in some low-end applications, but many telemedicine applications will require the higher bandwidth and guaranteed qualities of service supported by ATM. We discuss the design of multimedia systems for telemedicine. First, various applications of telemedicine are presented, and their multimedia and communications requirements are discussed. A telemedicine prototype is then presented, each of its components discussed, and a potential future telemedicine system is shown.
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Patent•
02 Oct 1996
TL;DR: In this article, an eye-tracking system is employed to control the movement of a cursor to select an icon and display data on the screen. But the system is limited to displaying data on a head's-up display.
Abstract: Systems and methods are disclosed for displaying data on a head's-up display screen. Multiple forms of data can be selectively displayed on a semi-transparent screen mounted in the user's normal field of view. The screen can either be mounted on the user's head, or mounted on a moveable implement and positioned in front of the user. A user interface is displayed on the screen including a moveable cursor and a menu of computer control icons. An eye-tracking system is mounted proximate the user and is employed to control movement of the cursor. By moving and focusing his or her eyes on a specific icon, the user controls the cursor to move to select the icon. When an icon is selected, a command computer is controlled to acquire and display data on the screen. The data is typically superimposed over the user's normal field of view.
405 citations
Patent•
29 Nov 2001TL;DR: The systems described in this article include tools for computer-assisted evaluation of objective characteristics of pathologies, along with human decision-making where substantial discretion is involved, and collaborative diagnosis may be provided through shared access to data and shared control over a diagnostic tool.
Abstract: The systems described herein include tools for computer-assisted evaluation of objective characteristics of pathologies A diagnostic system arranged according to the teachings herein provides computer support for those tasks well suited to objective analysis, along with human decision making where substantial discretion is involved Collaborative diagnosis may be provided through shared access to data and shared control over a diagnostic tool, such as a telemicroscope, and messaging service for clinicians who may be at remote locations These aspects of the system, when working in cooperation with one another, may achieve improved diagnostic accuracy or early detection for pathologies such as lymphoma
195 citations
TL;DR: This review provides a general framework within which GCMRD research can be integrated, evaluated, and guided and synthesizes the known human factors research on GCMRDs.
Abstract: Gaze-contingent multiresolutional displays (GCMRDs) center high-resolution information on the user's gaze position, matching the user's area of interest (AOI). Image resolution and details outside the AOI are reduced, lowering the requirements for processing resources and transmission bandwidth in demanding display and imaging applications. This review provides a general framework within which GCMRD research can be integrated, evaluated, and guided. GCMRDs (or "moving windows") are analyzed in terms of (a) the nature of their images (i.e., "multiresolution," "variable resolution," "space variant," or "level of detail"), and (b) the movement of the AOI (i.e., "gaze contingent," "foveated," or "eye slaved"). We also synthesize the known human factors research on GCMRDs and point out important questions for future research and development. Actual or potential applications of this research include flight, medical, and driving simulators; virtual reality; remote piloting and teleoperation; infrared and indirect vision; image transmission and retrieval; telemedicine; video teleconferencing; and artificial vision systems.
158 citations
01 Mar 2000
TL;DR: A platform based on a hybrid fiber coaxial (HFC) network in Taiwan designed to make a home telecare system feasible to combine biomedical data, including three-channel electrocardiogram (ECG) and blood pressure, video, and audio into a National Television Standard Committee (NTSC) channel for communication between the patient and healthcare provider.
Abstract: To solve the inconvenience of routine transportation of chronically ill and handicapped patients, this paper proposes a platform based on a hybrid fiber coaxial (HFC) network in Taiwan, designed to make a home telecare system feasible. The aim of this home telecare system is to combine biomedical data, including three-channel electrocardiogram (ECG) and blood pressure (BP), video and audio, into a National Television Standard Committee (NTSC) channel for communication between the patient and the healthcare provider. Digitized biomedical data and output from medical devices can be further modulated to a second audio program (SAP) subchannel which can be used for second-language audio in NTSC television signals. For long-distance transmission, we translate the digital biomedical data into the frequency domain using frequency shift key (FSK) technology and insert this signal into an SAP band. The whole system has been implemented and tested. The results obtained using this system clearly demonstrated that real-time video, audio, and biomedical data transmission are very clear, with a carrier-to-noise ratio of up to 43 dB.
86 citations
Patent•
22 Oct 1999
TL;DR: In this article, a prescription-controlled diagnostic data collection system for collecting, storing and receiving medical diagnostic data is described, where a remote medical diagnostic device (130) is configured to collect and transmit diagnostic data.
Abstract: A prescription-controlled diagnostic data collection system (100) for collecting, storing and receiving medical diagnostic data. A remote medical diagnostic device (130) is configured to collect and transmit diagnostic data (128). A health service provider (102) prepares a prescription (112 ... 114) that authorizes (116 ... 118) the remote diagnostic device to collect (122) and/or transmit (110) diagnostic data.
74 citations
References
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TL;DR: Depending on one's viewpoint, telemedicine may be seen as a valuable tool for providing badly needed specialty care services and faith in this technology is not universal, however.
Abstract: TELEMEDICINE can be broadly defined as the use of telecommunications technologies to provide medical information and services. Although this definition includes medical uses of the telephone, facsimile, and distance education,telemedicineis increasingly being used as shorthand for remote electronic clinical consultation. Interest in the field has increased dramatically in the 1990s. State and federal allocations for telemedicine and related technologies are likely to exceed $100 million in fiscal 1994-1995.1At least 13 federal agencies, including the US Department of Commerce, Health Care Financing Administration (HCFA), Office of Rural Health Policy, and US Department of Defense, have begun telemedicine research and demonstration programs. Many states are using their own resources to build state-of-the-art telemedicine systems, some with capital investments exceeding $50 million. Faith in this technology is not universal, however. Depending on one's viewpoint, telemedicine may be seen as a valuable tool for providing badly needed specialty care services
783 citations
"Multimedia systems for telemedicine..." refers background in this paper
...Teleradiology studies are the only telemedicine sessions that regularly receive reimbursement [ 6 ]....
[...]
TL;DR: The multimedia video processor (MVP) architecture as mentioned in this paper combines, on a single semiconductor chip, multiple fully programmable processors with multiple data streams connected to shared RAMs through a crossbar network.
Abstract: The multimedia video processor (MVP) architecture, which incorporates a variety of parallel processing techniques to deliver very high performance to a wide range of imaging and graphics applications, is described. The MVP combines, on a single semiconductor chip, multiple fully programmable processors with multiple data streams connected to shared RAMs through a crossbar network. Each of the independent processors can execute many operations in parallel every cycle. The architecture is scalable and supports different numbers of processors to meet the cost and performance requirements of different markets. MVP's target environment and the development of MVP are outlined. >
192 citations
Journal Article•
TL;DR: The multimedia video processor architecture, which incorporates a variety of parallel processing techniques to deliver very high performance to a wide range of imaging and graphics applications, is described.
Abstract: We defined the multimedia video processor (MVP) to accelerate applications with heavy image and graphics processing requirements. Here we give an overview of the architecture
144 citations
TL;DR: A form of adaptive block cosine transform coding is evaluated, a new compression technique that allows considerable compression of digital radiographs with minimal degradation of image quality, and suggests that compression ratios as high as 25:1 may be acceptable for primary diagnosis in chest radiology.
Abstract: High-resolution digital images make up very large data sets that are relatively slow to transmit and expensive to store. Data compression techniques are being developed to address this problem, but significant image deterioration can occur at high compression ratios. In this study, the authors evaluated a form of adaptive block cosine transform coding, a new compression technique that allows considerable compression of digital radiographs with minimal degradation of image quality. To determine the effect of data compression on diagnostic accuracy, observer tests were performed with 60 digitized chest radiographs (2,048 x 2,048 matrix, 1,024 shades of gray) containing subtle examples of pneumothorax, interstitial infiltrate, nodules, and bone lesions. Radiographs with no compression, with 25:1 compression, and with 50:1 compression ratios were presented in randomized order to 12 radiologists. The results suggest that, with this compression scheme, compression ratios as high as 25:1 may be acceptable for pr...
143 citations
TL;DR: MediaStation 5000 is a highly integrated desktop multimedia system implemented on a single PC plug-in board that performs multistandard compression, high-speed image processing, and fast 2D and 3D graphics functions.
Abstract: MediaStation 5000 is a highly integrated desktop multimedia system implemented on a single PC plug-in board. It performs multistandard compression, high-speed image processing, and fast 2D and 3D graphics functions. The Texas instruments Multimedia Video Processor (MVP), a single-chip multiprocessing device with a highly parallel internal architecture, provides the system's processing power and programmability. >
91 citations