Initial In Vivo Quantification of Tc-99m Sestamibi Uptake as a Function of Tissue Type in Healthy Breasts Using Dedicated Breast SPECT-CT

Figure 1

Photograph of the dedicated breast SPECT-CT system. The CT subsystem (left and right) emits a quasimonochromatic X-ray cone beam (orange arrows) with 35 keV mean energy. A rotating plate in front of the CT collimator allows for scatter projection acquisitions. Ribbon lasers mounted on the collimator allow for rapid positioning of the breast into the common FOV. The CZT gamma camera (behind breast) used for SPECT imaging is mounted orthogonally to the CT subsystem and passively detects 140 keV gammas (green arrows) from MIBI.