[Study on a newly-designed step-intensity meter, and its use in determing optimal roentgen exposure of the hip joints of infants].
D004864:Equipment and Supplies; D006615:Hip / Q000000981:diagnostic imaging*; D006621:Hip Joint; D006801:Humans; D007223:Infant; D011859:Radiography / Q000600:supply & distribution*
HIP/radiography; RADIOGRAPHY/equipment and supplies