We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Evaluation of micro-remnant niduses of arteriovenous malformations post-gamma knife radiosurgery by 3D-rotational angiography.
- Authors
Noda, Ryuichi; Akabane, Atsuya; Kawashima, Mariko; Segawa, Masafumi; Tsunoda, Sho; Wada, Hiroyuki; Watanabe, Makoto; Yamada, Haruyasu; Inoue, Tomohiro
- Abstract
Purpose: Recent innovations in radiological imaging have enabled the detection of micro-remnant niduses of arteriovenous malformations (AVMs) after gamma knife radiosurgery (GKS), which have not been previously perceptible. Herein, we focus on the difficulty of evaluating micro-remnant AVMs after GKS that are hardly perceptible on conventional examinations and propose integrating follow-up three-dimensional rotational angiography (3D-RA) in the previous gamma plan as a solution. Methods: We retrospectively searched NTT Medical Center Tokyo hospital database for patients with AVMs who underwent both two-dimensional digital subtraction angiography (2D-DSA) and 3D-RA as follow-up for GKS from February 2021 to January 2024. Patients with suspected nidus occlusion on the latest non-contrast-enhanced magnetic resonance angiography (NC-MRA) were included, and contrast-enhanced magnetic resonance angiography (CE-MRA), 2D-DSA, and 3D-RA were evaluated. Results: Twelve patients with 13 AVM sites were defined as having complete nidus occlusion on upfront NC-MRA. On 2D-DSA, seven AVM sites showed the presence of slight remaining AVMs based on the detection of remnant drainage veins, however the nidus was not detected in three cases. Nevertheless, 3D-RA detected micro-remnant niduses in all seven AVM sites, and four patients underwent re-GKS. Nine patients with ten AVM sites also underwent CE-MRA, and six AVM sites were diagnosed with radiation-induced parenchymal injury. Conclusion: Importing the 3D-RA image into the treatment planning has the potential to be more helpful than NC-MRA or CE-MRA to detect micro-remnant AVMs and evaluate the true remnant volume, and may contribute to a more detailed treatment planning, thereby improving the results of GKS retreatment.
- Subjects
MAGNETIC resonance angiography; DIGITAL subtraction angiography; RADIOSURGERY; ARTERIOVENOUS malformation; HOSPITAL patients; CEREBRAL arteriovenous malformations
- Publication
Acta Neurochirurgica, 2024, Vol 166, Issue 1, p1
- ISSN
0001-6268
- Publication type
Article
- DOI
10.1007/s00701-024-06246-0