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Comparison of imaging modalities for the accurate delineation of arteriovenous malformation, with reference to stereotactic radiosurgery
|タイトル: ||Comparison of imaging modalities for the accurate delineation of arteriovenous malformation, with reference to stereotactic radiosurgery|
|その他のタイトル: ||MRA for radiosurgery of AVM|
|著者: ||Aoyama, Hidefumi 著作を一覧する|
Katoh, Norio 著作を一覧する
Kudo, Kohsuke 著作を一覧する
Asano, Takeshi 著作を一覧する
Kuroda, Satoshi 著作を一覧する
Ishikawa, Tatsuya 著作を一覧する
Miyasaka, Kazuo 著作を一覧する
|発行日: ||2005年 7月15日|
|誌名: ||International Journal of Radiation Oncology Biology Physics|
|出版社 DOI: ||10.1016/j.ijrobp.2005.03.039|
|抄録: ||Purpose: To investigate the discrepancy between the arteriovenous malformations
(AVMs) seen on magnetic resonance angiography (MRA), and seen on stereotactic digital subtracted angiography (DSA).
Materials and Methods: The target volume on stereotactic DSA (VDSA) and the target volume on MRA (VMRA) were separately delineated in 28 intracranial AVMs. The coordinates of the center and the outer edges of VDSA and VMRA were calculated and used for the analyses.
Results: The standard deviations (mean value) of the displacement of centers of VMRA from VDSA were 2.67mm (-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 cranio-caudal direction.
VMRA covered less than 80% of VDSA 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 VDSA and 12.3 cc for VMRA (p=0.948).
Conclusion: The shift of centers between each modality is not negligible. Considering no significant difference between VDSA and VMRA, but inadequate coverage of the VDSA by VMRA, 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.|
|Relation (URI): ||http://www.sciencedirect.com/science/journal/03603016|
|資料タイプ: ||article (author version)|
|出現コレクション:||雑誌発表論文等 (Peer-reviewed Journal Articles, etc)|
提供者: 青山 英史