Spencer J D, Hill I D
Br J Radiol. 1979 Jan;52(613):51-5. doi: 10.1259/0007-1285-52-613-51.
A biological test object has been used to determine optimum imaging factors for xeroradiography of the extremities. Three observers independently demonstrated a clear preference for positive-mode imaging.
已使用生物测试对象来确定四肢干板X线摄影的最佳成像参数。三名观察者独立表明对正模式成像有明显偏好。
