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CC BY-NC-ND 4.0 · Indian Journal of Neurosurgery 2024; 13(02): 103-106
DOI: 10.1055/s-0041-1735378
Original Article

Comparison between Digital Subtraction Angiography and Indocyanine Green Video Angiography in the Operative Management of Aneurysmal Subarachnoid Hemorrhage

Mohsin Fayaz
1   Department of Neurosurgery, Sher - i - Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
,
Kaiser Kareem
1   Department of Neurosurgery, Sher - i - Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
,
Abrar Ahad Wani
1   Department of Neurosurgery, Sher - i - Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
,
Altaf Umar Ramzan
1   Department of Neurosurgery, Sher - i - Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
,
Nayil khursheed Malik
1   Department of Neurosurgery, Sher - i - Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
,
Sabia Rashid
1   Department of Neurosurgery, Sher - i - Kashmir Institute of Medical Sciences, Soura, Srinagar, Jammu and Kashmir, India
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Abstract

Background Digital subtraction angiography (DSA) is a fluoroscopy technique used in interventional radiology to clearly visualize blood vessels in a bony or dense soft tissue environment. Images are produced using contrast medium by subtracting a “pre-contrast image” or mask from subsequent images, once the contrast medium has been introduced into a structure, hence the term “Digital subtraction angiography.” Indocyanine green video angiography (ICG-VA) is a safe and practical method of real-time delineation of microvasculature used in the surgical management of intracranial aneurysms, arteriovenous malformations, and other vascular lesions. Intraoperative ICG-VA is used as an adjunct in addition to intraoperative or postoperative DSA, and in other cases, it is used as the sole method to confirm the complete obliteration of clipped intracranial aneurysm. The only limitation of ICG-VA is the nonvisibility of vessels that are not in the operative field. Intraoperative ICG is useful in the clipping of intracranial aneurysms to ensure a gross patency of branch vessels; however, the presence of residual aneurysms and subtle changes in flow in branch vessels is best seen by DSA.

Methods ICG angiography was done during the surgery and the findings of intraoperative ICG angiography were compared with postoperative DSA that was done between 6 and 12 weeks. DSA was done to see any compromise of lumen of parent vessel by clip, any residual aneurysm.

Results In our study, intraoperative ICG complete aneurysm obliteration was present in all 30 (100%) patients, while in postoperative DSA complete aneurysm obliteration was diagnosed in 27 (90.0%) patients. Parent vessel patency was present in all 30 (100.0%) patients in both intraoperative ICG-VA and postoperative DSA. In intraoperative ICG distal branch patency was present in 26 (86.7%) patients, while in postoperative DSA distal branch patency was diagnosed in 27 (90.0%) patients.

Conclusion We compared the intraoperative ICG finding and postoperative DSA finding and found that DSA is more sensitive than ICG in depicting residual aneurysm neck, hence reducing the risk of rupture of the aneurysm in future. Intraoperative ICG has high special resolution reflex feedback, intraoperative repositioning time is less and thus critical ischemia time is reduced. In a developing country like ours where DSA facilities are limited, ICG can be optimal investigation to delineate the vascular anatomy and confirmation of clip position thus reducing mortality.

Keywords

aneurysm - digital subtraction angiography - indocyanine video angiography


Publication History

Article published online:
21 April 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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