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Interest of HYPR flow dynamic MRA for characterization of cerebral arteriovenous malformations: comparison with TRICKS MRA and catheter DSA.
- Source :
-
European Radiology . Nov2015, Vol. 25 Issue 11, p3230-3237. 8p. 1 Diagram, 1 Chart, 1 Graph. - Publication Year :
- 2015
-
Abstract
- <bold>Objective: </bold>HYPR flow is a 3D dynamic contrast-enhanced MRA technique providing isotropic sub-millimetre resolution with half-second temporal resolution. We compared HYPR flow and time-resolved imaging of contrast kinetics (TRICKS) MRA for the characterization of cerebral arteriovenous malformations (cAVMs), using catheter DSA as reference.<bold>Methods: </bold>Twenty-two patients underwent HYPR flow and TRICKS MRA within 15 days of DSA. HYPR flow and TRICKS datasets were reviewed separately by two readers for image quality, Spetzler-Martin grade, venous ectasia, and deep venous drainage.<bold>Results: </bold>Image quality was better for HYPR flow than for TRICKS (narrower full width at half maximum; larger arterial diagnostic window; greater number of arterial frames, P ≤ 0.05). Using HYPR flow, inter-reader agreement was excellent for all cAVM characteristics. The agreement with DSA for the overall Spetzler-Martin grade was excellent for HYPR flow (ICC = 0.96 and 0.98, depending on the reader) and TRICKS (ICC = 0.82 and 0.95). In comparison to TRICKS, HYPR flow showed higher concordance with DSA for the identification of venous ectasia and deep venous drainage.<bold>Conclusion: </bold>Owing to an excellent agreement with DSA with respect to depiction of the vascular architecture of cAVMs, HYPR flow could be useful for the non-invasive characterization of cAVMs.<bold>Key Points: </bold>• Dynamic MRA is used for cerebral AVM depiction and follow-up • HYPR flow is a new, highly-resolved dynamic MRA sequence • HYPR flow provides whole brain coverage • HYPR flow provides excellent agreement with the Spetzler-Martin grade • Compared to TRICKS MRA, HYPR flow improves cerebral AVM characterization. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CEREBRAL arteriovenous malformations
*BRAIN imaging
*THREE-dimensional imaging
*DIGITAL subtraction angiography
*MAGNETIC resonance angiography
*COMPARATIVE studies
*CEREBRAL angiography
*CATHETERIZATION
*DYNAMICS
*HEMODYNAMICS
*LONGITUDINAL method
*RESEARCH methodology
*MEDICAL cooperation
*RESEARCH
*EVALUATION research
*CONTRAST media
*ARTERIOVENOUS malformation
Subjects
Details
- Language :
- English
- ISSN :
- 09387994
- Volume :
- 25
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- European Radiology
- Publication Type :
- Academic Journal
- Accession number :
- 110164620
- Full Text :
- https://doi.org/10.1007/s00330-015-3745-9