Comparison of imaging modalities for the accurate delineation of arteriovenous malformation, with reference to stereotactic radiosurgery

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · International Journal of Radiation Oncology, Biology and Physics

DOI:https://doi.org/10.1016/j.ijrobp.2005.03.039· OSTI ID:20698635

Aoyama, Hidefumi ^[1]; Shirato, Hiroki ^[1]; Katoh, Norio ^[1]; Kudo, Kohsuke ^[1]; Asano, Takeshi ^[1]; Kuroda, Satoshi ^[2]; Ishikawa, Tatsuya ^[2]; Miyasaka, Kazuo ^[1]

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1. Department of Radiology, Hokkaido University Graduate School of Medicine, Sapporo (Japan)
2. Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo (Japan)

Purpose: To investigate the discrepancy between the arteriovenous malformations seen on magnetic resonance angiography (MRA) and on stereotactic digital subtracted angiography (DSA). Methods and Materials: The target volume on stereotactic DSA (V{sub DSA} ) and the target volume on MRA (V{sub MRA} ) were separately delineated in 28 intracranial arteriovenous malformations. The coordinates of the center and the outer edges of V{sub DSA} and V{sub MRA} were calculated and used for the analyses. Results: The standard deviations (mean value) of the displacement of centers of V{sub MRA} from V{sub DSA} were 2.67 mm (-1.82 mm) in the left-right direction, 3.23 mm (-0.08 mm) in the anterior-posterior direction, and 2.16 mm (0.91 mm) in the craniocaudal direction. V{sub MRA} covered less than 80% of V{sub DSA} in any dimensions in 9 cases (32%), although no significant difference was seen in the target volume between each method, with a mean value of 11.9 cc for V{sub DSA} and 12.3 cc for V{sub MRA} (p = 0.948). Conclusion: The shift of centers between each modality is not negligible. Considering no significant difference between V{sub DSA} and V{sub MRA} , but inadequate coverage of the V{sub DSA} by V{sub MRA} , it is reasonable to consider that the target on MRA might include the feeding artery and draining vein and possibly miss a portion of the nidus.

• OSTI ID: 20698635
• Journal Information: International Journal of Radiation Oncology, Biology and Physics, Vol. 62, Issue 4; Other Information: DOI: 10.1016/j.ijrobp.2005.03.039; PII: S0360-3016(05)00573-0; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0360-3016
• Country of Publication: United States
• Language: English

Related Subjects

62 RADIOLOGY AND NUCLEAR MEDICINE
ARTERIES
BIOMEDICAL RADIOGRAPHY
COMPUTERIZED TOMOGRAPHY
IMAGES
MALFORMATIONS
RADIOTHERAPY
SURGERY
VEINS