TY - JOUR AU - Meijer, Frederick J. A. AU - Schuijf, Joanne D. AU - de Vries, Joost AU - Boogaarts, Hieronymus D. AU - van der Woude, Willem-Jan AU - Prokop, Mathias PY - 2019 DA - 2019/01/28 TI - Ultra-high-resolution subtraction CT angiography in the follow-up of treated intracranial aneurysms JO - Insights into Imaging SP - 2 VL - 10 IS - 1 AB - 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. SN - 1869-4101 UR - https://doi.org/10.1186/s13244-019-0685-y DO - 10.1186/s13244-019-0685-y ID - Meijer2019 ER -