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Cable modem access to picture archiving and communication system images using a web browser over the internet

JOURNAL OF DIGITAL IMAGING 2000年第2期13卷 93-96页

作者： Bennett, WF Spigos, DG Vaswani, KV Terrell, JE Ohio State Univ Med Ctr Columbus OH 43210 USA

This presentation describes our experiences using a web-based viewing software and a browser to view our picture archiving and communication system (PACS) images at a remote site with cable modem-internet communications. Our testing shows that using a cable modem to access our radiology webserver produces acceptable transmission speeds to remote sites. The average time-to-display (TTD) for 16 computed tomography (CT) images on the web-based intranet system in our hospital was 7 to 8 seconds. Using a cable modem and comparable equipment at a remote site, the average TTD is 16 seconds over the internet. The TTD does not significantly change during various hours of the day. Security for our hospital-based PACS is provided by a firewall. Access through the firewall is accomplished using virtual private network (VPN) software, a secure ID, and encryption. We have found that this is a viable method for after-hours subspecialty radiology consultation. Copyright (C) 2000 by W.B. Saunders Company.

关键词：医学科学研究中心计算机安全计算机系统医院信息系统因特网/仪器和设备调制解调器俄亥俄放射学信息系统/仪器和设备软件设计远程放射学/仪器和设备体层摄影术 X线计算机/仪器和设备人类

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Practical considerations for picture archiving and communications systems over the enterprise network

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JOURNAL OF DIGITAL IMAGING 1999年第2期12卷 84-87页

作者： Miller, MT McLaurin, C Gene Burton & Associates Franklin TN 37067 USA

Network design is a vital element of any PACS implementation. The involvement of Information Systems in PACS planning and implementation is essential to the long-term success of the PACS’s implementation and operation. Radiology equipment and PACS systems are now computer systems. Drawing on the capabilities of the staff in your organization who have computer expertise is essential to the long-term success of PACS implementation and operation.

关键词：预算计算机通信网络/分类计算机通信网络/仪器和设备计算机通信网络/组织和管理计算机系统诊断显像医院信息系统/经济学医院信息系统/组织和管理信息存储和检索放射学信息系统/分类放射学信息系统/经济学放射学信息系统/仪器和设备放射学信息系统/组织和管理工艺学放射学远程放射学/分类远程放射学/仪器和设备远程放射学/组织和管理用户计算机接口人类

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Teleradiology: Technology and practice

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JOURNAL OF DIGITAL IMAGING 1999年第2期12卷 226-227页

作者： Frey, GD Spicer, KM Med Univ S Carolina Dept Radiol Charleston SC 29425 USA

Teleradiology increases the ability of radiologists to provide service to remote and underserved locations as well as coverage at times when direct reading of images is not possible. Good practices for teleradiology are described in the American College of Radiology (ACR) teleradiology standard, Teleradiology equipment is converging with picture archiving and communications systems (PACS) equipment so that diagnostic interpretation from remote locations is possible. Image capture can be directly from digital modalities or by film scanner. Transmission speed is still an issue. High transmission speeds were difficult to achieve but recent improvements may increase speeds and decrease costs. Copyright (C) 1999 by W.B. Saunders Company.

关键词：成本及成本分析诊断显像缺医地区放射学信息系统远程会诊工艺学放射学远程放射学/经济学远程放射学/仪器和设备远程放射学/标准时间因素人类

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Digital wireless radiology consultations with a portable computer

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JOURNAL OF TELEMEDICINE AND TELECARE 1998年第4期4卷 201-205页

作者： Reponen, J Ilkko, E Jyrkinen, L Karhula, V Tervonen, O Laitinen, J Leisti, EL Koivula, A Suramo, KI Univ Hosp Oulu Dept Diagnost Radiol Oulu Finland

A wireless system for radiological subspecialist consultation based on a portable personal computer and a CSM cellular phone was tested. A link with secure access to the hospital image network was built. A total of 68 emergency computerized tomography (CT) examinations were transmitted. Transmission time via CSM for a single CT image was 1 min and for a complete head scan was 18 min. The transmitted images were acceptable for final diagnosis in 72% of the cases, the rest being acceptable for preliminary diagnosis. The diagnosis from the transmitted images did not change after a later review of the original images in 97% of cases. The wireless link saved a hospital visit by the senior radiologist in 24% of cases. The results show that a remote consultation link can be built with readily available technology and that the technique is useful in radiological subspecialist consultations for CT images.

关键词：急诊处理微型计算机敏感性与特异性远程放射学/仪器和设备远程放射学/方法体层摄影术 X线计算机创伤和损伤/放射摄影术青少年成年人老年人老年人 80以上儿童儿童学龄前女(雌)性人类婴儿男(雄)性中年人

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Initial experience with a wireless personal digital assistant as a teleradiology terminal for reporting emergency computerized tomography scans

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JOURNAL OF TELEMEDICINE AND TELECARE 2000年第1期6卷 45-49页

作者： Reponen, J Ilkko, E Jyrkinen, L Tervonen, O Niinimäki, J Karhula, V Koivula, A Oulu Univ Hosp Dept Diagnost Radiol Oulu Finland

A new type of terminal device, a wireless personal digital assistant (PDA) based on a CSM digital cellular phone, was used to transmit computerized tomography scans of 21 patients to a neuroradiologist. All transmitted images were suitable for a preliminary consultation and in one case a final report could be made. In 18 cases the findings were compatible with the reference film reading performed later and in three cases there were minor differences of no clinical importance. Transmission of a single image lasted 1 min 30 s and the transmission of a complete brain scan (14 images) took on average 21 min. The total process of transmission and interpretation of a brain examination series took on average 40 min. In this pilot study the neuroradiologist gained essential information in 24% of the cases and beneficial information in 62%. The neuroradiologist considered that the image consultation saved a hospital visit in 15 cases (71%). Although PDA technology is at an early stage of development and has numerous limitations, it is likely that future technical improvements will allow easier clinical consultations for neurosurgeons and neurologists.

关键词：脑损伤/诊断 X线影像增强/标准远程放射学/仪器和设备远程放射学/标准体层摄影术 X线计算机/标准青少年成年人老年人老年人 80以上儿童儿童学龄前女(雌)性人类婴儿男(雄)性中年人

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A simple telemedicine system using a digital camera

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JOURNAL OF TELEMEDICINE AND TELECARE 2000年第4期6卷 233-236页

作者： Corr, P Couper, I Beningfield, SJ Mars, M Univ Natal Dept Radiol Pietermaritzburg South Africa Univ Natal Dept Physiol Pietermaritzburg South Africa Manguzi Hosp KwaZulu Natal South Africa Dept Family Med Pretoria South Africa Univ Cape Town Dept Radiol ZA-7925 Cape Town South Africa

Radiographs on a viewing box were photographed at a remote hospital in South Africa using a digital camera with a resolution of 1024 x 768 pixels at 24-bit colour depth. The resultant images were stored in JPEG format and transmitted as email attachments to be read on a PC monitor by radiologists in Durban and Cape Town. Twenty-seven images were received, of which 23 were of diagnostic quality (85%). The mean file size was 120 kByte. For quality control purposes, 100 chest radiographs were photographed at a base hospital and read by a radiologist blinded to the diagnosis. In this study 96 images were of diagnostic quality (96%) and the correct diagnosis was made in 90 cases (94%). Incorrect readings were made in six cases (6%): small pulmonary nodules (less than 1 cm in diameter) were missed in five cases and in one case early apical tuberculosis was missed. Digital camera technology permits simple, inexpensive telemedicine. Limited spatial resolution is a concern when reading chest images with small pulmonary nodules and infiltrates.

关键词：试点项目乡村卫生服务南非远程放射学/仪器和设备远程放射学/标准胸部损伤/放射摄影术人类

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An experimental teleradiology transmission system using a high-speed ATM backbone network

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JOURNAL OF TELEMEDICINE AND TELECARE 2000年第2期6卷 114-118页

作者： Kato, K Shimamoto, K Ishigaki, T Niimi, R Ishiguchi, T Mimura, T Yamauchi, K Ikeda, M Iwata, A Nagoya Univ Sch Med Dept Radiol Showa Ku Nagoya Aichi 4668550 Japan Nagoya Univ Sch Hlth Sci Dept Radiol Technol Nagoya Aichi Japan Nagoya Univ Hosp Dept Med Informat & Records Nagoya Aichi Japan Nagoya Inst Technol Dept Elect & Comp Engn Nagoya Aichi Japan

We evaluated the performance of an experimental teleradiology system based on a high-speed ATM backbone network. Image acquisition, transmission and the disk-to-display processing times were measured. Computerized tomography (CT) scans printed on 14 inch x 17 inch (36 cm x 43 cm) films were digitized and transferred over the network. The average time for the entire process was 1 min 30 s. Three radiologists interpreted 20 cases. For CT image interpretation, the reading time for one case ranged from 2 to 12 min (mean 6 min 46 s) on a monitor, and from 1 to 3 min (mean 1 min 31 s) with the original film. The ATM backbone network operating at 156 Mbit/s provided sufficient speed for remote consultation. However, further improvements in the operability of the system, especially the image viewing station, are necessary before it will be satisfactory for clinical use.

关键词：计算机系统图像处理计算机辅助/仪器和设备图像处理计算机辅助/方法日本放射学信息系统/仪器和设备遥测术/仪器和设备远程放射学/仪器和设备体层摄影术 X线计算机人类

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