Table 1 Spatial resolution, given as full-width-at-half-maximum (FWHM) and full-width-at-tenth-maximum (FWTM), for the two detectors when the ¹⁷⁷Lu line source was placed at different depths in the phantom of tissue-equivalent plastic. For some depths, FWTM was larger than 140 mm and could thus not be determined

From: Evaluation of two intraoperative gamma detectors for assessment of ¹⁷⁷Lu activity concentration in vivo