Table 3.

Review findings for hybrid modalities in radioguided surgery using criteria outlined in Table 2

Category	Number of articles			Total number of articles
	Clinical use	Probe development	Hybrid technologies
Gamma–bright field	7	2	3	12
Gamma–NIR fluorescence	15	17	3	35
Gamma–ultrasound	1	–	2	3
Gamma–β	1	–	2	3
β–OCT	1	–	1	2
Gamma–MR	–	3	–	3
Pre-/perioperative fusion	–	–	2	2
Total	25	22	13	60

Note that not all modalities would necessarily require a specific hybrid tracer. Reviews covering multiple modalities have not been included here

OCT optical coherence tomography