FIGURE 1. Patient 6 with bronchioloalveolar adenocarcinoma (2.0 x 2.0 cm), pT1N0M0. (A) CT image shows nodule in right lung. (B) FDG PET image does not reveal any lesions. (C) Early scan on ²⁰¹Tl SPECT. (D) Delayed scan on ²⁰¹Tl SPECT. ²⁰¹Tl SPECT reveals good visualization of tumor (ER, 1.39; DR, 1.79; RI, 28.8%).