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Proceedings Paper

Ultrasound Picture Archiving And Communication Systems
Author(s): Ken Koestner; C. F. Hottinger
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Paper Abstract

The ideal ultrasonic image communication and storage system must be flexible in order to optimize speed and minimize storage requirements. Various ultrasonic imaging modalities are quite different in data volume and speed requirements. Static imaging, for example B-Scanning, involves acquisition of a large amount of data that is averaged or accumulated in a desired manner. The image is then frozen in image memory before transfer and storage. Images are commonly a 512 x 512 point array, each point 6 bits deep. Transfer of such an image over a serial line at 9600 baud would require about three minutes. Faster transfer times are possible; for example, we have developed a parallel image transfer system using direct memory access (DMA) that reduces the time to 16 seconds. Data in this format requires 256K bytes for storage. Data compression can be utilized to reduce these requirements. Real-time imaging has much more stringent requirements for speed and storage. The amount of actual data per frame in real-time imaging is reduced due to physical limitations on ultrasound. For example, 100 scan lines (480 points long, 6 bits deep) can be acquired during a frame at a 30 per second rate. In order to transmit and save this data at a real-time rate requires a transfer rate of 8.6 Megabaud. A real-time archiving system would be complicated by the necessity of specialized hardware to interpolate between scan lines and perform desirable greyscale manipulation on recall. Image archiving for cardiology and radiology would require data transfer at this high rate to preserve temporal (cardiology) and spatial (radiology) information.

Paper Details

Date Published: 14 January 1982
PDF: 6 pages
Proc. SPIE 0318, 1st Intl Conf and Workshop on Picture Archiving and Communication Systems, (14 January 1982); doi: 10.1117/12.967679
Show Author Affiliations
Ken Koestner, Technicare Corporation (United States)
C. F. Hottinger, Technicare Corporation (United States)

Published in SPIE Proceedings Vol. 0318:
1st Intl Conf and Workshop on Picture Archiving and Communication Systems
Andre J. Duerinckx, Editor(s)

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