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KMID : 1005420110130030235
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Journal of Cerebrovascular and Endovascular Neurosurgery
2011 Volume.13 No. 3 p.235 ~ p.238
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Comparison of Aneurysmal Clip-induced Artifacts in 64- and 16-row Multislice Computed Tomography Angiograms
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Choi Hyun-Ho
Lee Seung-Jin
Sohn Chul-Ho
Kim Jeong-Eun
Kang Hyun-Seung
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Abstract
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Objective: The aim of this study was to compare titanium and cobalt alloy clip induced artifacts in 16- and 64-row multislice computed tomography angiograms.
Methods: A total of 40 intracranial aneurysms in 37 patients treated using titanium or cobalt-alloy clips were enrolled in this study. Computed tomography angiography (CTA) was performed using a 16-row (12 aneurysms; cobalt-alloy clips in 8 and titanium clips in 4) or 64-row (28 aneurysms; cobalt-alloy clips in 14 and titanium clips in 14) multislice CT machine after surgical clipping. Clip-induced artifacts were divided into white and black components, and artifact sizes were quantified by measuring the areas of these components.
Results: The titanium clips (634.9±308.44mm2) produced smaller artifacts than cobalt alloy clips (2,797.4±3,121.98mm2) by CTA (p=0.006), but the mean size of titanium clip induced artifacts was smaller for 64-row (544.0±68.77mm2) than for 16-row (953.3±279.95mm2) multislice CTA (p=0.026). On the other hand, cobalt alloy clip related artifacts were similarly sized (64-row, 2,191.5±2,072.86mm2 versus 16-row, 3,857.6±4,386.56mm2, p=0.246).
Conclusion: Titanium clips produce smaller artifacts than cobalt-alloy clips and 64-row multislice CTA reduced titanium clip-induced artifacts as compared with 16-row multislice CTA. However, cobalt-alloy clip artifacts were huge and were not reduced by the higher row CTA unit.
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KEYWORD
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Aneurysm, Clip, Computed tomography, Angiography, Artifact
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