| 摘要 |
<p>In a preferred embodiment, a method of determining coincidence correction for a radiation detector in the presence of a radiation source symmetrical or nonsymmetrical around the axis of the radiation detector, including: calculating the coincidence correction per the equation <DF>COIg = epsilon g DIVIDED INTEGRAL INTEGRAL INTEGRAL epsilon (g)x,y,z DIVIDED COI(g)x,y,zdxdydz </DF> where epsilon g is full peak efficiency for the radiation source, where epsilon (g)x,y,z are values of full peak efficiency inside the radiation source obtained from efficiency mapping in the space around said detector, and where the values COI(g)x,y,z for points under integration inside the radiation source are a function of full peak efficiency, decay chain data, and peak-to-total ratio.</p> |
