Vascular and endovascular surgery · 2010
Contrast-enhanced magnetic resonance angiography following subintimal recanalization.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод пока не подготовлен
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Abdel-Gawad Ehab, Harthun Nancy, Norton Patrick, Bonatti Hugo, Turba Ulku, Spinosa David J, Bozlar Ugur, Ramkaransingh Jeffrey R, Hagspiel Klaus D
Аннотация
PURPOSE: To describe the appearance of lower extremity runoff vessels following subintimal recanalization (SIR) on contrast-enhanced magnetic resonance angiography (ceMRA) and compare 2 different ceMRA techniques.
METHODS: A total of 6 patients underwent stepping table 3-dimensional (3D) ceMRA and time-resolved 2-dimensional (2D) MRA within 1 to 3 days (mean 1.83 days) following SIR. The 2 techniques were compared with intra-arterial digital subtraction angiography (DSA).
RESULTS: A total of 15 arteries were recanalized in 6 patients. Three-dimensional ceMRA allowed evaluation of patency in all segments above the knee. Postprocedural hyperemia impaired the assessment of the trifurcation vessels on 3D ceMRA. Due to its higher temporal resolution 2D MRA was not affected by venous contamination and allowed reliable confirmation of patency of the recanalized vessels.
CONCLUSIONS: Diagnostic MRA studies of the lower extremity runoff vessels following SIR is possible, but a hybrid technique using a stepping table MR DSA and a time-resolved sequence like 2D MRA of the calf station is necessary for runoff assessment.
METHODS: A total of 6 patients underwent stepping table 3-dimensional (3D) ceMRA and time-resolved 2-dimensional (2D) MRA within 1 to 3 days (mean 1.83 days) following SIR. The 2 techniques were compared with intra-arterial digital subtraction angiography (DSA).
RESULTS: A total of 15 arteries were recanalized in 6 patients. Three-dimensional ceMRA allowed evaluation of patency in all segments above the knee. Postprocedural hyperemia impaired the assessment of the trifurcation vessels on 3D ceMRA. Due to its higher temporal resolution 2D MRA was not affected by venous contamination and allowed reliable confirmation of patency of the recanalized vessels.
CONCLUSIONS: Diagnostic MRA studies of the lower extremity runoff vessels following SIR is possible, but a hybrid technique using a stepping table MR DSA and a time-resolved sequence like 2D MRA of the calf station is necessary for runoff assessment.
Предметные рубрики MeSH
AgedAged, 80 and overAngiography, Digital SubtractionArterial Occlusive DiseasesArtifactsConstriction, PathologicContrast MediaFemaleGadolinium DTPAHumansImaging, Three-DimensionalLower ExtremityMagnetic Resonance AngiographyMalePredictive Value of TestsRecurrenceRetrospective StudiesSeverity of Illness IndexTime FactorsTreatment OutcomeVascular PatencyVascular Surgical Procedures