Figure 2
From: Dual-radionuclide in vivo imaging of micro-metastasis and lymph tract with submillimetre resolution

(a) 4T1-mNIS cell Spheroids. Scale bar: 200 µm. (b) Microscopic view of an isolated spheroid prepared for SPECT imaging. Scale bar: 200 µm. (c) SPECT image of the spheroid incorporating 0.77 kBq of 125I-. Scale bar: 500 µm. (d) Plot comparing spheroid activity measured by γ-counter and CdTe-DSD SPECT-1, illustrating a strong linear correlation.