TY - JOUR
T1 - Assessment of arteriovenous malformations with 3-Tesla time-resolved, contrast-enhanced, three-dimensional magnetic resonance angiography
T2 - Clinical article
AU - Kunishima, Kanako
AU - Mori, Harushi
AU - Itoh, Daisuke
AU - Aoki, Shigeki
AU - Kabasawa, Hiroyuki
AU - Koga, Tomoyuki
AU - Maruyama, Keisuke
AU - Masumoto, Tomohi K.O.
AU - Abe, Osamu
AU - Ohtomo, Kuni
PY - 2009/3
Y1 - 2009/3
N2 - Object. Although conventional catheter angiography is commonly used in the evaluation of intracranial arteriovenous malformations (AVMs), less invasive tools are more suitable for screening or follow-up. Older MR angiography techniques cannot provide high enough temporal and spatial resolution for assessing AVMs. Threetesla time-resolved imaging of contrast kinetics (TRICKS) - a time-resolved, contrast-enhanced 3D MR angiography technique - achieves subsecond time resolution without sacrificing spatial resolution. The purpose of this study was to assess the accuracy of TRICKS at 3 T in the evaluation of AVMs. Methods. Between November 2006 and November 2007, 31 patients who were known to have AVMs underwent evaluation in a 3-T unit with the TRICKS technique. The TRICKS images were then evaluated independently by 2 radiologists for nidus detection, early venous filling detection, and Spetzler-Martin classification, and these results were compared with the results of catheter angiography. Results. Time-resolved imaging of contrast kinetics achieved 96% sensitivity and 100% specificity both in nidus detection and early venous filling detection. The Spetzler-Martin grades also showed excellent correlation with catheter angiography findings (κ = 0.89). Conclusions. Although this is a preliminary study, the authors' results indicate that time-resolved contrast-enhanced 3D MR angiography at 3 T is a good tool to assess AVMs, and has the potential to replace catheter angiography in screening or follow-up examinations of patients with AVMs.
AB - Object. Although conventional catheter angiography is commonly used in the evaluation of intracranial arteriovenous malformations (AVMs), less invasive tools are more suitable for screening or follow-up. Older MR angiography techniques cannot provide high enough temporal and spatial resolution for assessing AVMs. Threetesla time-resolved imaging of contrast kinetics (TRICKS) - a time-resolved, contrast-enhanced 3D MR angiography technique - achieves subsecond time resolution without sacrificing spatial resolution. The purpose of this study was to assess the accuracy of TRICKS at 3 T in the evaluation of AVMs. Methods. Between November 2006 and November 2007, 31 patients who were known to have AVMs underwent evaluation in a 3-T unit with the TRICKS technique. The TRICKS images were then evaluated independently by 2 radiologists for nidus detection, early venous filling detection, and Spetzler-Martin classification, and these results were compared with the results of catheter angiography. Results. Time-resolved imaging of contrast kinetics achieved 96% sensitivity and 100% specificity both in nidus detection and early venous filling detection. The Spetzler-Martin grades also showed excellent correlation with catheter angiography findings (κ = 0.89). Conclusions. Although this is a preliminary study, the authors' results indicate that time-resolved contrast-enhanced 3D MR angiography at 3 T is a good tool to assess AVMs, and has the potential to replace catheter angiography in screening or follow-up examinations of patients with AVMs.
KW - Arteriovenous malformation
KW - Contrast-enhanced angiography
KW - Digital subtraction angiography
KW - Time-resolved angiography
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U2 - 10.3171/2008.7.JNS08173
DO - 10.3171/2008.7.JNS08173
M3 - Article
C2 - 19046044
AN - SCOPUS:63849182905
SN - 0022-3085
VL - 110
SP - 492
EP - 499
JO - Journal of neurosurgery
JF - Journal of neurosurgery
IS - 3
ER -