A sparse-readout quantitative PET scanner for breast cancer therapy optimization

Dedicated breast-imaging scanners using radiotracers, e.g., PET scanners (positron emission tomography) have been proposed and evaluated since the late 1980s [1]. These systems trade a reduction in the size of the imaging field of view for improved resolution, and potentially also a lower cost, higher sensitivity, and a smaller form factor. The higher resolution can improve both detection and quantitation of concentrations of radiotracer, although for the latter to be true, tomographic imaging is mandatory. Several commercial dedicated breast PEM (positron emission mammography), PET scanners, and gamma camera systems have been developed and marketed [2].