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. 2022 Jan 6;20:24. doi: 10.1186/s12951-021-01232-5

Fig. 9.

Fig. 9

a General structure of dual NIR-II probes and NIR-II imaging-guided sentinel lymph nodes resection. b Schematic illustration of dual NIR II fluorescent dye injection and lymphatic drainage. c The illustration of dual-color imaging-guided surgery. d The different channels images displayed signal accumulation of IR-FD and QDs after administration of subcutaneous injection in tumor bearing mouse. e Dual NIR-II imaging guided pre- and post-surgery of sentinel LN excision. Reproduced with permission from [134]. Copyright 2020, Wiley–VCH Verlag GmbH & Co. KGaA, Weinheim