Fig. 3
From: Evaluation of image quality at the detector’s edge of dedicated breast positron emission tomography
Images of the breast phantom scanned by dbPET at the five different positions. Images a, b, c, d, and e correspond to phantom images scanned at 8 mm, 13 mm, 19.5 mm (depth of 1/8), 39 mm (depth of 1/4), and 78 mm (depth of 1/2, the centre of the detector) below the top edge of the detector. Closer to the edge of the detector, the background was noisier. The hot spots of the smallest sphere with a diameter of 5 mm could not be confirmed in a and b