Resolution Requirements for Slow-Scan Television Transmission of X-Rays. A Test Report for the Remote Medical Diagnosis System
Abstract
The Remote Medical Diagnosis System (RMDS) is being developed to link ships and shore stations lacking professional medical staffs with larger ships and stations having such staffs. Although RMDS will be capable of transmitting a variety of visual and auditory medical data (eg, X-rays, ECGs, voice and heart- lung sounds, etc), its most important use will be for the transmission of high- quality X-ray images. Because of system limitations and other design factors, the resolution of the system must be limited to no more than that necessary for functionally satisfactory performance. As used here, functionally satisfactory performance specifically means that the performance of the radiologist in interpreting X-rays and related data transmitted by RMDS must be substantially as effective as his performance in interpreting original X-ray images. In order to determine the resolution which will actually be required in use of the system, a series of tests was planned and conducted. In these tests, radiologists at the San Diego Naval Regional Medical Center interpreted test X- rays which were displayed at various levels of resolution. The responses of the radiologists were analyzed to derive the minimum resolution levels which would be compatible with system design and operational requirements. The body of the report describes the experiment, the results obtained, and the conclusions drawn from the results including specific guidelines for resolution needed in the RMDS visual channel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 19, 1977
- Accession Number
- ADA047870
Entities
People
- F. H. Gerber
- R. L. Crepeau
- W. T. Rasmussen