Ultra-high-resolution subtraction CT angiography in the follow-up of treated intracranial aneurysms

被引:27
作者
Meijer, Frederick J. A. [1 ]
Schuijf, Joanne D. [2 ]
de Vries, Joost [3 ]
Boogaarts, Hieronymus D. [3 ]
van der Woude, Willem-Jan [1 ]
Prokop, Mathias [1 ]
机构
[1] Radboud Univ Nijmegen, Med Ctr, Dept Radiol & Nucl Med, Geert Grootepl 10,POB 9101, NL-6500 HB Nijmegen, Netherlands
[2] Canon Med Syst Europe BV, Global Res & Dev Ctr, Zoetermeer, Netherlands
[3] Radboud Univ Nijmegen, Med Ctr, Dept Neurosurg, Nijmegen, Netherlands
关键词
Multi-detector row computed tomography; Angiography; Brain; Cerebral aneurysm; BONE SUBTRACTION; ACCURACY;
D O I
10.1186/s13244-019-0685-y
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
In subtraction CT angiography (CTA), a non-contrast CT acquisition is subtracted from a contrast-enhanced CTA acquisition. Subtraction CTA can be applied in the detection, classification, and follow-up of intracranial aneurysms and is advantageous over conventional angiography because of its non-invasive nature, shorter examination time, and lower costs. Recently, an ultra-high-resolution CT scanner has been introduced in clinical practice offering an in-plane spatial resolution of up to 0.234 mm, approaching the resolution as seen during conventional invasive digital subtraction angiography (DSA). The twofold increase in spatial resolution as compared to a conventional CT scanner could improve the evaluation of small vascular structures and, coupled with dedicated post-processing techniques, further reduce metal artifacts. Technical considerations using a state-of-the-art high-resolution subtraction CTA protocol are discussed for application in the follow-up of surgical and endovascular treated intracranial aneurysms.
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页数:6
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