Connecting Radiology | Enabling collaboration and professional development
Improved tool for testing screen-film contact in mammography.
Mount CJ, Gray JE.
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.
Radiographics. 1990 Nov;10(6):1049-54
Good screen-film contact is essential to obtain high definition in radiographic images. We compared the conventional test tool for measuring screen-film contact, which uses #8 mesh (eight wires per inch [about three wires per centimeter]), with a prototype tool of #40 copper mesh. The conventional tool did not adequately test screen-film contact for mammography, in which significantly higher resolution is obtained. We believe #40 copper mesh should be used to test screen-film contact of mammographic cassettes. We also found that entrapped air may reduce screen-film contact and, therefore, recommend that cassettes be loaded at least 15 minutes before they are exposed.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Department of Diagnostic Radiology, Mayo Clinic, Rochester, MN 55905.
Radiographics. 1990 Nov;10(6):1049-54
Good screen-film contact is essential to obtain high definition in radiographic images. We compared the conventional test tool for measuring screen-film contact, which uses #8 mesh (eight wires per inch [about three wires per centimeter]), with a prototype tool of #40 copper mesh. The conventional tool did not adequately test screen-film contact for mammography, in which significantly higher resolution is obtained. We believe #40 copper mesh should be used to test screen-film contact of mammographic cassettes. We also found that entrapped air may reduce screen-film contact and, therefore, recommend that cassettes be loaded at least 15 minutes before they are exposed.
Posted via PubMed for educational and discussion purposes only.
Link to PubMed Reference
Views: 1
© 2024 Created by radRounds Radiology Network.
Powered by
