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Scattered gamma rays: can they be useful for lymphoscintigraphy imaging?

We have read with great interest the study by Yoneyama et al. [1] in the recent issue of Nuclear Medicine Communications. In their study, Yoneyama and colleagues showed that lower energy photons contain too many scattered photons, which can obscure the sentinel nodes adjacent to the injection sites of the radiotracers in breast cancer patients undergoing lymphatic mapping. They reported better contrast of sentinel nodes near the injection sites with upper offset energy windows to exclude scattered photons from the injection site more efficiently.