Follow-up of Coiled Cerebral Aneurysms: Comparison of Three-Dimensional Time-of-Flight Magnetic Resonance Angiography at 3 Tesla With Three-Dimensional Time-of-Flight Magnetic Resonance Angiography and Contrast-Enhanced Magnetic Resonance Angiography at 1.5 Tesla
- 1 August 2008
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Investigative Radiology
- Vol. 43 (8), 559-567
- https://doi.org/10.1097/rli.0b013e31817e9b0b
Abstract
To compare three-dimensional (3D) time-of-flight (TOF)-magnetic resonance angiography (MRA) at 3 T with 3D TOF-MRA and ultrafast contrast-enhanced (CE)-MRA at 1.5 T and to determine the optimum MRA sequence for follow-up of cerebral aneurysms treated with Guglielmi detachable coils (GDCs). Twenty-eight patients treated with GDCs for 29 cerebral aneurysms underwent MRA at 3 T and 1.5 T within 24 hours (during the same session for outpatients). All imaging was performed using a sensitivity-encoding head coil (SENSE factor = 2). Unenhanced axial 3D TOF-MRA at 3 T was performed with repetition time (TR)/echo time (TE) = 16/2.9. At 1.5 T, axial 3D TOF-MRA (TR/TE = 23/4) was performed first, followed by axial 3D ultrafast gradient echo MRA (TR/TE = 6/2) enhanced with 0.1 mmol/kg gadobenate dimeglumine (MultiHance). Source images and maximum intensity projection and shaded surface display reconstructions for each acquisition sequence were evaluated for quality of visualization of residual aneurysm patency and scored for visualization preference. Residual aneurysm was detected in 15/29 cases on CE-MRA at 1.5 T and TOF-MRA at 3 T but in only 11/29 cases on TOF-MRA at 1.5 T. CE-MRA at 1.5 T was preferred to TOF-MRA at 1.5 T in 13 cases (P = 0.004) and to TOF-MRA at 3 T in 3 cases. TOF-MRA at 3 T was preferred to TOF-MRA at 1.5 T in 11 cases (P = 0.04) but was not preferred to CE-MRA at 1.5 T in any case. The parent artery was identifiable in all 29 cases after TOF-MRA at 3 T and CE-MRA at 1.5 T but in only 27 cases after 3D TOF-MRA at 1.5 T. TOF-MRA follow-up of coiled aneurysms is better at 3 T than at 1.5 T; nevertheless, greater definition of residual patency is achieved with ultrafast CE-MRA at 1.5 T.Keywords
This publication has 26 references indexed in Scilit:
- Current diagnostic approaches to subarachnoid haemorrhageEuropean Radiology, 2005
- Detection of Intracranial Aneurysms with Two-dimensional and Three-dimensional Multislice Helical Computed Tomographic AngiographyNeurosurgery, 2004
- Detection of Intracranial Aneurysms: Multi–Detector Row CT Angiography Compared with DSARadiology, 2004
- Long-Term Angiographic Recurrences After Selective Endovascular Treatment of Aneurysms With Detachable CoilsStroke, 2003
- Neurologic Complications of Cerebral Angiography: Prospective Analysis of 2,899 Procedures and Review of the LiteratureRadiology, 2003
- Multislice computerized tomography angiography in the evaluation of intracranial aneurysms: a comparison with intraarterial digital subtraction angiographyJournal of Neurosurgery, 2003
- Endovascular Treatment of Unruptured AneurysmsStroke, 2001
- Follow-up of Intracranial Aneurysms Treated with Detachable Coils: Comparison of Gadolinium-enhanced 3D Time-of-Flight MR Angiography and Digital Subtraction AngiographyRadiology, 2001
- Long-term Angiographic Follow-up of 169 Intracranial Berry Aneurysms Occluded with Detachable CoilsRadiology, 1999
- Risk of Cerebral Angiography in Patients With Subarachnoid Hemorrhage, Cerebral Aneurysm, and Arteriovenous MalformationStroke, 1999