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At least 145 records · Page 8Linked to original sources
PubMed1994

Graphic file compression on a Macintosh.

AutoDoubler, Compact Pro, DiskDoubler, StuffIt Deluxe, and StuffIt SpaceSaver compression applications for the Macintosh were tested for size of compressed files, and time to compress and expand. EPS, TIFF, PICT and Photoshop native format file types were used, in 1-bit, 8-bit greyscale, 8-bit colour (indexed), 24-bit colour (red, blue, green (RGB)), and 32-bit colour (cyan, magenta, yellow, black (CMYK)) modes. JPEG compression is illustrated by comparing an uncompressed image with three images compressed at different rates.

Computer Graphics↗
PubMed2001

A multichannel PC tachistoscope with high resolution and fast display change capability.

The number of channels that PC tachistoscopes can have has increased recently (Bokhorst, 1995; Myors, 1998); however, neither the quality of display nor speed of image switching has been improved. This article shows the capability of VESA's VBE 3.0 standard (1998) for increasing the number of channels of high-quality images. And the refresh rate can be set to the fastest cathode ray tube (CRT) scanning rate the monitor can tolerate in order to reduce the timing delay of changing display. A PCTSCOPE library was written in C to provide these capabilities, which is compatible with conventional DOS real mode. The PC tachistoscope can have numbers of channels with various resolutions and colors and different refresh rates. For example, 25 images with the resolution of 640 x 480 pixels and 256 colors can be loaded to video memory, and vertical refresh rate can be set to 180 Hz. It takes less than 6 msec to change the display among 25 channels in synchronizing with the start of the video scanning frame. In this library, the number of channels, the resolution of the images, and the speed of changing display all are improved. The multichannel PC tachistoscope with this technique is especially suitable for research requiring high-quality images and rapid successive presentation of stimuli.

Computer Storage Devices↗
PubMed1999

[Clinical computer applications in the radiology department].

The information society is currently developing. In the field of radiology, the PACS (picture archiving and communication system) and teleradiology are widely employed in medical practice. The Ministry of Health and Welfare (MHW) reported that physicians should consider some problems in Telemedicine in December 1997. The technology of storage media is improving and we encourage the standardization of data formatting and the transmission protocol to utilize medical electronic information. Several standards exist in the medical imaging field, the DICOM (digital imaging and communications in medicine) standard, the IS&C (image save and carry) standard and the Common Standard that the Medical Information System Development Center (MEDIS-DC) defined for the electronic storage. The PACS requires high transmission speed, integrated services digital network and an asynchronous transfer mode switching system. The MHW needed a technical requirement for the electronic image storage without films in March 1994. The requirement was divided into three parts, (1) security, (2) long-term reproducibility, (3) common usage. The MEDIS-DC published the Common Standards for electronic storage in 1996. When we use the PACS via network, we must consider the security. The present network may have low security, and falsification, such as illegal login may occur. In the future, these problems will be solved, and the network-wide PACS will likely become a commonly used system.

Computer Storage Devices↗
PubMed2002

A resource server for medical training.

OBJECTIVES: We have developed a RESOURCE SERVER to collect and store various elements used by a professor during his lecture. METHODS: The server manages four types of objects: ELEMENTS, RESOURCES (set of elements referring to a given topic), INDEXES (to organize the resources for further search and use), and USERS (to identify providers, users, and access rights). If an ELEMENT s modified, the RESOURCE is automatically updated. RESULTS: An example (preparation of an anatomy lecture) explains how the RESOURCE SERVER works in three steps: organization of the training material, indexing, and retrieval. CONCLUSIONS: The RESOURCE SERVER will help instructors develop, update and share pedagogic resources for supporting their training courses, lessons and conferences. Moreover, these techniques, based on Internet technologies for easy handling of and access to these resources, allow local and distant access. Within the general framework of the French-speaking Virtual Medical University, the RESOURCE SERVER will represent an important link between data collection and its use in intelligent pedagogic training.

Computer Storage Devices↗
PubMed2002

Why I love my EMR.

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Attitude to Computers↗