title: Contrast-Enhanced and Time-of-Flight MR Angiographic Assessment of Endovascular Coiled Intracranial Aneurysms at 1.5 T.
abstract: This study evaluated contrast-enhanced magnetic resonance angiography (CE-MRA) and three-dimensional time-of-flight magnetic resonance angiography (3D-TOF-MRA) through comparisons with digital subtraction angiography (DSA) for the follow-up of intracranial aneurysms treated with detachable coils. Sixty-seven patients with 79 aneurysms underwent 3D-TOF-MRA, CE-MRA, and catheter angiography one year after coiling. Two independent observers classified recanalization status on images as neck or body remnant or no recanalization. For 3D-TOF-MRA and CE-MRA, the intermodality agreement, interobserver agreement, and correlation with angiography were assessed. Sixty-seven patients with 79 coiled aneurysms agreed to participate in the study. Three aneurysms could not be detected on 3D-TOF-MRA, so they were excluded from this study. Interobserver agreement was very good for 3D-TOF-MRA and CE-MRA (kappa (κ): 0.87, 0.94, respectively). Correlation of TOF-MRA with angiography was good (κ: 0.76). Correlation of CE-MRA with angiography was excellent (κ: 0.91). The sensitivity and specificity of TOF-MRA were 92% and 98%, respectively. The sensitivity and specificity of CE-MRA were 96% and 98%, respectively. After selective embolization of intracranial aneurysms, CE-MRA is useful and comparable to DSA in the assessment of aneurysmal recanalization. Agreement with the gold standard is stronger with CE-MRA than with 3D-TOF-MRA.
authors.affiliation: Department of Radiology, Ataturk University, School of Medicine; Erzurum, Turkey - drihsany@gmail.com.
authors.forename: Akin
authors.initials: A
authors.lastname: Levent
authors.affiliation: Department of Radiology, Regional Training and Research Hospital; Erzurum, Turkey.
authors.forename: Ihsan
authors.initials: I
authors.lastname: Yuce
authors.affiliation: Department of Radiology, Ataturk University, School of Medicine; Erzurum, Turkey.
authors.forename: Suat
authors.initials: S
authors.lastname: Eren
authors.affiliation: Department of Radiology, Ataturk University, School of Medicine; Erzurum, Turkey.
authors.forename: Omer
authors.initials: O
authors.lastname: Ozyigit
authors.affiliation: Department of Radiology, Ataturk University, School of Medicine; Erzurum, Turkey.
authors.forename: Mecit
authors.initials: M
authors.lastname: Kantarci
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015901:Angiography, Digital Subtraction; D001807:Blood Vessel Prosthesis; D019917:Blood Vessel Prosthesis Implantation / Q000379:methods*; D003287:Contrast Media; D057510:Endovascular Procedures / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy*; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D011446:Prospective Studies; D015203:Reproducibility of Results; D016896:Treatment Outcome
chemical_list: D003287:Contrast Media
keywords: CE angiography; TOF angiography; coiled aneurysm follow-up