Diagnostic ultrasound system for indicating image level, has user interface determining actual and previous reference levels and process module automatically computing image levels based on reference levels and display positions

摘要

The system (100) has a user interface (124) determining actual and previous reference levels and a process module (116) automatically computing image levels based on the reference levels and display positions. A display device (118) selectively displays the image levels that are coordinated with the reference levels and the display positions. A working memory storage (114) stores the previous reference level in response to the choice of a reference level-secure-option, such that the display device is changed from displaying of the actual level to reproduction of the previous level.