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Qualitative use of ICG angiography and lymphography in periorbital surgery.
Orbit 2023 September 13
PURPOSE: Open imaging fluorescence devices have been utilized in surgical oncology, vascular and plastic surgery; however, the role of indocyanine green (ICG) in periorbital surgery and lymphatics has not been explored.
METHODS: A prospective, single-center diagnostic study was conducted from 2021 to 2022 utilizing ICG to assess both the periorbital vasculature and lymphatics. Fluorescence was captured with open-imaging fluorescent devices. For ICG angiography, a total of 5-10 mg of ICG was given intravenously at various time points to visualize intraoperative blood flow to eyelid flaps, vascular tumors, or extraocular muscles. For ICG lymphography, 0.03-0.06 mg of ICG was injected subcutaneously to visualize the periorbital and facial lymphatic drainage.
RESULTS: Twenty-two patients underwent ICG angiography. Periorbital vascular supply was seen in eyelid reconstructions ( n = 8), anophthalmic reconstructions ( n = 2), lacrimal gland tumors ( n = 2), orbital venous malformations ( n = 2), tumor metastasis ( n = 1) and benign tumors ( n = 1). The anterior ciliary arteries were visualized to the extraocular muscles in fracture repairs ( n = 3) and muscle biopsies ( n = 2). Ten patients underwent ICG lymphangiography highlighting the global periorbital lymphatic system.
CONCLUSION: ICG allows for visualization of the vasculature of extraocular muscles and tumors, assessing perfusion of flaps during reconstruction and the global periorbital lymphatic drainage pathways.
METHODS: A prospective, single-center diagnostic study was conducted from 2021 to 2022 utilizing ICG to assess both the periorbital vasculature and lymphatics. Fluorescence was captured with open-imaging fluorescent devices. For ICG angiography, a total of 5-10 mg of ICG was given intravenously at various time points to visualize intraoperative blood flow to eyelid flaps, vascular tumors, or extraocular muscles. For ICG lymphography, 0.03-0.06 mg of ICG was injected subcutaneously to visualize the periorbital and facial lymphatic drainage.
RESULTS: Twenty-two patients underwent ICG angiography. Periorbital vascular supply was seen in eyelid reconstructions ( n = 8), anophthalmic reconstructions ( n = 2), lacrimal gland tumors ( n = 2), orbital venous malformations ( n = 2), tumor metastasis ( n = 1) and benign tumors ( n = 1). The anterior ciliary arteries were visualized to the extraocular muscles in fracture repairs ( n = 3) and muscle biopsies ( n = 2). Ten patients underwent ICG lymphangiography highlighting the global periorbital lymphatic system.
CONCLUSION: ICG allows for visualization of the vasculature of extraocular muscles and tumors, assessing perfusion of flaps during reconstruction and the global periorbital lymphatic drainage pathways.
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