(1) The operational keyboard should be logically designed with grouping in three parts: 1. a group of buttons for activation of operational screen information that appear with never more than three at the same time; 2. buttons for presetting of wanted parameter values, of alarm limits and for introduction of patient data with adjoint but strictly separated OK-mode necessity to alert that change is being made.
(2) Their respective sensitivity in the diagnosis of malignant tumors was 96.8 per cent and 86.8 per cent and was not improved by adjoint analysis.