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American Journal of Roentgenology, Vol 128, Issue 5, 789-793
Copyright © 1977 by American Roentgen Ray Society

Articles

Effect of kilovoltage on detectability of pulmonary nodules in a chest phantom

EE Christensen, GW Dietz, RC Murry, JG Moore, and EM Stokely

A partial chest phantom was constructed to examine the effect of kilovoltage on the detectability of pulmonary nodules. Four different energies were studied: 100, 150, 200, and 300 kVp. Nodule detectability improved with increasing energies up to 200 kVp, but improvement was relatively small and was accompanied by an almost equal rise in the number of false positive readings. Patient exposures were least at 200 kVp. There seems to be no advantage in a 300 kVp technique, since nodule detectability decreased and patient exposures increased at this energy.
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Copyright © 1977 by the American Roentgen Ray Society.