| 摘要 |
<p>The invention relates to radiology systems and, more particularly in such systems, to a procedure enabling the effect of non-reciprocity of the radiographic film to be determined. This non-reciprocity effect is expressed by CNRD coefficients (dI) which are a function of the photon flux (dI) onto the film, the said CNRD coefficients (dI) being obtained from the non-reciprocity CNRT coefficients (tI) expressed as exposure time (tI) and from determination of the reference exposure to light Lref received by the film. <IMAGE></p> |
