OBJECTIVE: Evaluation of TOF 3D MRA compared to angiography in the follow-up of intracranial aneurysms treated by Guglielmi detachable coils (GDC). MATERIAL: and method: Prospective analysis of follow-up MRA and angiographies for 20 patients with 22 aneurysms. There were 2 MRAs for 3 aneurysms giving a total of 25 cases. RESULTS: A poor correlation between MRA and angiography was observed in 21 cases of 25. For 9 cases, stable exclusion (95-100%) visible on MRA was confirmed by angiography. For 12 other cases, a residual flow within the aneurysmal neck or a residual flow between coils was detected by MRA and confirmed by angiography. A poor correlation was found in 4 cases out of 25: 3 residual flows within the aneurysmal neck and 1 residual flow within the coil mass not visible on MRA. MRA has a sensibility of 75% for the detection of an anomaly, a specificity of 100%, a positive predictive value of 100% and a negative predictive value of 69.2%. MRA is able to detect a large residual flow within aneurysmal neck and a re-growth, which would need a second embolization. Anomalies not visible on MRA as observed in our study, residual flow within the coil mass and the aneurysmal neck, do not require complementary treatment. CONCLUSION: A normal TOF 3D MRA can avoid an angiography in the follow-up of an intracranial aneurysm treated by GDC.
OBJECTIVE: Evaluation of TOF 3D MRA compared to angiography in the follow-up of intracranial aneurysms treated by Guglielmi detachable coils (GDC). MATERIAL: and method: Prospective analysis of follow-up MRA and angiographies for 20 patients with 22 aneurysms. There were 2 MRAs for 3 aneurysms giving a total of 25 cases. RESULTS: A poor correlation between MRA and angiography was observed in 21 cases of 25. For 9 cases, stable exclusion (95-100%) visible on MRA was confirmed by angiography. For 12 other cases, a residual flow within the aneurysmal neck or a residual flow between coils was detected by MRA and confirmed by angiography. A poor correlation was found in 4 cases out of 25: 3 residual flows within the aneurysmal neck and 1 residual flow within the coil mass not visible on MRA. MRA has a sensibility of 75% for the detection of an anomaly, a specificity of 100%, a positive predictive value of 100% and a negative predictive value of 69.2%. MRA is able to detect a large residual flow within aneurysmal neck and a re-growth, which would need a second embolization. Anomalies not visible on MRA as observed in our study, residual flow within the coil mass and the aneurysmal neck, do not require complementary treatment. CONCLUSION: A normal TOF 3D MRA can avoid an angiography in the follow-up of an intracranial aneurysm treated by GDC.
Authors: S W Park; M H Han; S H Cha; B J Kwon; K H Kim; O K Kwon; S K Baik; K H Chang Journal: Interv Neuroradiol Date: 2004-10-20 Impact factor: 1.610
Authors: A Cordebar; S Bracard; S Kremer; E Schmitt; R Anxionnat; A Martin-Bertaux; L Picard Journal: Neuroradiology Date: 2004-10-19 Impact factor: 2.804
Authors: H A Deutschmann; M Augustin; J Simbrunner; B Unger; H Schoellnast; G A Fritz; G E Klein Journal: AJNR Am J Neuroradiol Date: 2007-04 Impact factor: 3.825