A radiographic system comprising an X-ray source disposed to direct an X-ray beam through an adjustable shutter aperture in an aligned collimator and onto an image receptor in a holder located at a preselected distance from the source; and automatic means for preventing an X-ray exposure until prescribed operating conditions have been satisfied, the automatic means including read-only-memory means for storing the prescribed conditions therein and ascertaining whether or not the prescribed conditions have been met.
申请公布号
US4018716(A)
申请公布日期
1977.04.19
申请号
US19750587447
申请日期
1975.06.16
申请人
THE MACHLETT LABORATORIES, INCORPORATED
发明人
FITZSIMMONS, THOMAS W.;BERLUTI, JR., VINCENT;WAGNER, HOWARD G.;SHAPIRO, JONATHAN S.