Evaluation of angiographic computed tomography in the follow-up after endovascular treatment of cerebral aneurysms--a comparative study with DSA and TOF-MRA.
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Evaluation of angiographic computed tomography in the follow-up after endovascular treatment of cerebral aneurysms--a comparative study with DSA and TOF-MRA. / Buhk, Jan Hendrik; Kallenberg, Kai; Mohr, Alexander; Dechent, Peter; Knauth, Michael.
In: EUR RADIOL, Vol. 19, No. 2, 2, 2009, p. 430-436.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Evaluation of angiographic computed tomography in the follow-up after endovascular treatment of cerebral aneurysms--a comparative study with DSA and TOF-MRA.
AU - Buhk, Jan Hendrik
AU - Kallenberg, Kai
AU - Mohr, Alexander
AU - Dechent, Peter
AU - Knauth, Michael
PY - 2009
Y1 - 2009
N2 - Following coil embolization of intracranial aneurysms, many centers perform at least one digital subtraction angiography (DSA) continuing with time-of-flight magnetic resonance angiography (TOF-MRA). Angiographic computed tomography (ACT) provides high-resolution data from a rotational acquisition of a c-arm-mounted flat panel detector. This study evaluates possible advantages of applying ACT in aneurysm follow-up. In 22 patients DSA examinations with a rotational acquisition were performed. Rotational data were processed into an isotropic high-resolution volume. TOF-MRA was performed the day before DSA. Three experienced neuroradiologists performed a rating of the occlusion rate and a subjective method comparison. Weighted kappa statistics were calculated to assess the level of interobserver agreement. Compared to DSA, the diagnostic value of ACT as well as of TOF-MRA was rated to be inferior, although the sensitivity of detecting residual necks was higher with both techniques. Compared to TOF-MRA, ACT achieves favorable ratings only in aneurysms after stent-remodeling. Interobserver agreement was high for all techniques. Ratings of the occlusion rate correlated highly between all observers (r>0.85, p
AB - Following coil embolization of intracranial aneurysms, many centers perform at least one digital subtraction angiography (DSA) continuing with time-of-flight magnetic resonance angiography (TOF-MRA). Angiographic computed tomography (ACT) provides high-resolution data from a rotational acquisition of a c-arm-mounted flat panel detector. This study evaluates possible advantages of applying ACT in aneurysm follow-up. In 22 patients DSA examinations with a rotational acquisition were performed. Rotational data were processed into an isotropic high-resolution volume. TOF-MRA was performed the day before DSA. Three experienced neuroradiologists performed a rating of the occlusion rate and a subjective method comparison. Weighted kappa statistics were calculated to assess the level of interobserver agreement. Compared to DSA, the diagnostic value of ACT as well as of TOF-MRA was rated to be inferior, although the sensitivity of detecting residual necks was higher with both techniques. Compared to TOF-MRA, ACT achieves favorable ratings only in aneurysms after stent-remodeling. Interobserver agreement was high for all techniques. Ratings of the occlusion rate correlated highly between all observers (r>0.85, p
M3 - SCORING: Zeitschriftenaufsatz
VL - 19
SP - 430
EP - 436
JO - EUR RADIOL
JF - EUR RADIOL
SN - 0938-7994
IS - 2
M1 - 2
ER -
