Indocyanine green fluorescence in gastrointestinal surgery: Appraisal of current evidence

Table 2 Studies on liver segmentation and mapping using counterstaining technique

Ref.	Country	Study type	Patients	Camera device	ICG dose and time	Approach	Target liver	Success rate	Median (range) operative time, in minutes
Funamizu et al[21], 2021	Japan	Retrospective cohort	74	Viscera Elite II, Olympus, Pinpoint, Stryker, Hopkins II, Karl storz	0.5 mg	Glissonian pedicle approach	Monosegmectomy	100%	351
Xu et al[15], 2020	China	Retrospective cohort	27	Pinpoint, Stryker	2.5 mg/mL	Glissonian pedicle approach	Hemiliver. Section. Segment	52%	260 (150-360)
Uchiyama et al[19], 2011	Japan	Prospective cohort	22	PDE; Hamamatsu Photonic	0.5 mg/kg	CE-IOUS: Glissonian pedicle approach	Hemiliver: 8. Section: 8. Segment: 6	100%	280 (140-380)
Berardi et al[20], 2021	Japan	Retrospective cohort	86 patients: HCC: 55; CRLM: 31	Viscera Elite II, Olympus, Pinpoint, Stryker, Hopkins II, Karl storz	0.5 mg	Glissonian approach	Section: 14. Segment: 56. Sub-segment: 16	98.80%	328 (270-437)

ICG: Indocyanine green; HCC: Hepatocellular carcinoma; CRLM: Colorectal liver metastasis; CE-IOUS: Contrast enhanced intraoperative ultrasound.