Intracranial Aneurysms Treated with Coil Placement: Test Characteristics of Follow-up MR Angiography—Multicenter Study

Abstract

Documentation of good diagnostic performance of TOF MR angiography at both 1.5 and 3.0 T in the current study represents an important step toward replacing intraarterial DSA with MR angiography in the follow-up of patients with aneurysms treated with coils.

Follow-Up of Coiled Intracranial Aneurysms: Comparison of 3D Time-of-Flight MR Angiography at 3T and 1.5T in a Large Prospective Series

“…10 Another small series showed that 3T MRA had better agreement with DSA than 1.5T MRA and that coil artifacts were smaller at 3T than at 1.5T. 12 In our large series of 126 coiled intracranial aneurysms, 3D TOF-MRA at 3T was superior to 3D TOF-MRA at 1.5T to evaluate the quality of aneurysm occlusion.…”

“…[5][6][7] Both 3D TOF-MRA and CE-MRA have also been evaluated at 3T, also showing good diagnostic performance. [7][8][9][10] Direct comparison of MRA performed at 3T and 1.5T is relatively scarce, has been conducted in small series of patients, and is associated with contradictory results. [11][12][13] To compare the value of 3D-TOF at 1.5T and 3T, a prospective consecutive monocentric study was conducted in patients having follow-up examinations including DSA for coiled intracranial aneurysms.…”

Quantification of structural cerebral abnormalities on MRI 18 months after aneurysmal subarachnoid hemorrhage in patients who received endovascular treatment

“…Participants were retrieved from a prospectively collected cohort of consecutive patients who were independent for activities of daily life (modified Rankin Scale (mRS) ≤3 [7]) after aSAH and who underwent digital subtraction angiography and MRA at the University Medical Center Utrecht to assess occlusion of aneurysms treated with coil placement at 18 months after aSAH [8]. For the present study, we included those patients who had been examined between May 2005 and September 2007.…”

Inter- and Intrarater Agreement on the Outcome of Endovascular Treatment of Aneurysms Using MRA

“…1 MRA is replacing conventional angiography in following patients after coiling in many centers. 2,3 Interobserver agreement in the diagnosis of a residual or recurrent aneurysm has been reviewed recently. 4 Mean interrater agreement of the pooled studies was substantial ( ϭ 0.65; 95% confidence interval, 0.60 -0.69).…”

“…5 Interobserver agreement by using a catheter angiographic scale directly applied to MR angiographic results has been reported as "substantial" and "similar" to angiography, but the number of readings was limited to duplicates. 3,6 A more rigorous evaluation of the agreement in the MR angiographic diagnoses of residual or recurrent aneurysms in patients treated by endovascular coiling by a larger number of observers with various expertise is needed to establish the reliability of MRA diagnoses. 7 In clinical practice, the evolution of treated aneurysms is often followed by comparing the follow-up MRA with the final catheter angiogram of the embolization procedure.…”