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![The emerging role of sentinel lymph node biopsy in oral cavity and oropharyngeal carcinomas](https://image.oaes.cc/fdcd8f3a-6acf-45cd-8d72-7aad8c8d0329/par1179.fig.1.jpg)
Figure 1. Flow diagram of standard SLNB technique. If a hybrid tracer is used, the ICG is injected together with the radiotracer. SN: sentinel node; SPECT/CT: single photon electron computed tomography with computed tomography scan; NIR: near-infrared; ICG: indocyanine green.