Matthew D. Ralston

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A growing number of hospitals have installed PACS (Picture Archiving and Communications Systems) in order to improve patient care and to facilitate improved efficiencies. While eliminating films is commonly one of the first goals in planning a successful PACS implementation, eliminating the manual handling of paperwork can also produce a substantial(More)
Most RIS and PACS systems include extensive auditing capabilities as part of their security model, but inspecting those audit logs to obtain useful information can be a daunting task. Manual analysis of audit trails, though cumbersome, is often resorted to because of the difficulty to construct queries to extract complex information from the audit logs. The(More)
There has been a great deal of interest in sharing picture archiving and communications system (PACS) technology. Much of the discussion to this point has involved macro business/technical issues, such as cost for service, bandwidth, and storage technologies. In our own effort to share the Maine Medical Center PACS with other providers, we have found that(More)
The shear (S)-wave velocity of near-surface materials and its effect on seismic-wave propagation are of fundamental interest in many engineering, environmental, and groundwater studies. The multichannel analysis of surface wave (MASW) method provides a robust, efficient, and accurate tool to observe near-surface S-wave velocity. A recently developed device(More)
A formal Pilot Program for Web-based access to a host picture archiving and communication system (PACS) can augment the transition to filmless radiology. Beyond the technical issues of PCs and networks, appropriate legal input and documentation is necessary. While it is important to be in line with overall institutional priorities with regard to online(More)
The traditional, film-based radiology system presents serious limitations for patient care. These include forcing clinicians to make decisions based on information that is often less than optimal and making transfers of films and prior studies to other facilities more complicated than they need to be. Picture Archiving and Communication Systems (PACS)(More)