Fig. 3 (abstract A20).

Probability distribution functions for the 5-mm lesions on the 23-cm scanner (red) and the 70-cm scanner (blue), along with the background PDF (grey), depicting less overlap between the signal and background PDFs for the 70-cm scanner compared to the 23-cm scanner and implying better lesion detectability. PDFs will be used to calculate lesion detectability using the scan statistics methodology