Although such an automatic collimator would serve in large part to reduce unnecessary radiation exposure, there ... consists of a motorized model 11FP4 General Electric X-ray collimator, 2 a servo-amplifier set, a cassette size detector, ... When the difference signal becomes zero, the shutters stop in the position defined by the cassette in use. ... A block diagram of the control system is shown in Figure 1.
Title | : | Radiation Control for Health and Safety Act of 1967 |
Author | : | United States. Congress. Senate. Committee on Commerce |
Publisher | : | - 1968 |
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