Surveillance of intracranial aneurysms treated with detachable coils: a comparison of MRA techniques
- 205 Downloads
Two MRA techniques were evaluated for the follow-up of coiled intracranial aneurysms. Twenty-nine coiled aneurysms were evaluated for a total of 36 follow-up assessments using 3D time-of flight MRA (TOF MRA), an auto-triggered elliptic–centric-ordered three-dimensional gadolinium-enhanced MR angiogram (ATECO MRA), as well as a selective digital subtraction angiography (DSA), which served as the “gold standard”. Confident visualization was seen in 36 (100%) of ATECO MRAs and in 32 (89%) of the TOF MRAs. Eleven residual aneurysm components (RACs) greater than 2 mm were described on DSA. Of these, nine were seen on ATECO MRA (sensitivity of 81% and specificity of 88%) and four were seen on TOF MRA (sensitivity of 40% and specificity of 90%). The two RACs not seen on ATECO MRA both measured 3 mm. The six RACs not seen on TOF MRA measured 3, 4 and 5 mm. ATECO MRA provides a non-invasive reliable angiogram for the surveillance of coiled aneurysms and is superior to TOF MRA for this purpose.
KeywordsMRA Cerebral Aneurysm Endovascular Coiling IADSA
- 1.Dion J (2003) Brain aneurysms successfully treated without open surgery. In: RSNA press release and media briefing 19 June 2003. RSNA, New YorkGoogle Scholar
- 10.Farb R, Scott J, Willinsky R, Montanera W, Wright G, terBrugge K (2003) Intracranial venous system: gadolinium-enhanced three-dimensional MR venography with auto-triggered elliptic centric-ordered sequence—initial experience. Radiology 206:203–209Google Scholar
- 14.Fleiss JL (1981) Statistical methods for rates and proportions, 2nd edn. Wiley, New YorkGoogle Scholar
- 20.Kahara VJ, Seppanen SK, Ryymin PS, Mattila P, Kuurne T, Laasonen EM (1999) MR angiography with three-dimensional time-of-flight and targeted maximum-intensity-projection reconstructions in the follow-up of intracranial aneurysms embolized with Guglielmi detachable coils. AJNR Am J Neuroradiol 20:1470–1475PubMedGoogle Scholar