*2.2. SLN SPECT/CT*

LN mapping was performed 3–5 h after intracervical injection of ≈ 200 MBq [99mTc] Tc-Nanocolloide at the 3, 6, 9, and 12 o'clock positions. Imaging was performed with a hybrid SPECT/CT scanner (Discovery 670 Pro®, GE Healthcare, Chicago, IL, USA), as described previously [16]. An SLN was defined as focal activity enrichment in SPECT in a plausible anatomical region.
