| 摘要 |
<p>A CT system (10) includes a pair of detectors in its detector array (16) which measure x-ray intensity from a source (13) after passing through a differential x-ray filter (40). The ratio of the signals produced by these two detector elements (8) are input to a KV calculator (41) which produces a signal indicative of x-ray tube voltage (KV).</p> |
