Optimization of xeroradiographic exposures.
Xeroradiographs were exposed over a range of mAs and kVp in the mammographic energy range. At each kVp, the technique yielding the widest halo also produced the greatest detectability of small aluminum specks in mammographic phantoms. As the kVp increased, the maximum halo width and number of visible specks decreased. At all kVps, the techniques yielding the widest halo furnished almost constant energy deposition in the selenium plate. This constant plate dose was correlated to patient exposure at the entrance of the breast, and the relationships between patient entrance exposure, kVp, and minumum detectable speck size were determined.
D005260:Female; D006801:Humans; D011829:Radiation Dosage; D013679:Technology, Radiologic; D014984:Xeromammography / Q000379:methods; D014986:Xeroradiography / Q000379:methods*