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Comparison of imaging modalities for the accurate delineation of arteriovenous malformation, with reference to stereotactic radiosurgery
|Title: ||Comparison of imaging modalities for the accurate delineation of arteriovenous malformation, with reference to stereotactic radiosurgery|
|Other Titles: ||MRA for radiosurgery of AVM|
|Authors: ||Aoyama, Hidefumi Browse this author →KAKEN DB|
|Katoh, Norio Browse this author →KAKEN DB|
|Kudo, Kohsuke Browse this author →KAKEN DB|
|Asano, Takeshi Browse this author|
|Kuroda, Satoshi Browse this author →KAKEN DB|
|Ishikawa, Tatsuya Browse this author →KAKEN DB|
|Miyasaka, Kazuo Browse this author →KAKEN DB|
|Issue Date: ||15-Jul-2005|
|Journal Title: ||International Journal of Radiation Oncology Biology Physics|
|Start Page: ||1232|
|End Page: ||1238|
|Publisher DOI: ||10.1016/j.ijrobp.2005.03.039|
|Abstract: ||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.|
|Type: ||article (author version)|
|Appears in Collections:||北海道大学病院 (Hokkaido University Hospital) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)|
Submitter: 青山 英史