The added value of CT virtual angioscopy to MDCT angiography in the evaluation of aortic diseases
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INTERVENTIONAL RADIOLOGY
The added value of CT virtual angioscopy to MDCT angiography in the evaluation of aortic diseases Mohammad Abd Alkhalik Basha1 · Ahmed Fekry Salem1 · Taghreed M. Azmy1 · Samar Mohamad Shehata1
© Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Purpose Incorporation of virtual angioscopy (VA) in the diagnostic work-up of aortic diseases could improve the clinical value and efficiency of multidetector computed tomography angiography (MDCTA). We aim to evaluate the clinical usefulness of virtual aortic navigation by CT angiography in various aortic diseases as a complement to standard MDCTA. Materials and methods We retrospectively selected 211 patients who performed MDCTA for suspected or operated aortic diseases. VA endoluminal images of the aorta were obtained by a fly-through technique. Two senior vascular radiologists independently evaluated all MDCTA images. After 1 month, the same two radiologists independently reviewed the MDCTA images combined with CTVA images. The respective accuracy of CTVA in delineating aortic abnormalities was compared to that of MDCTA using Fisher’s exact test. The Fleiss kappa (κ) statistic was used to assess the inter-reader agreement (IRA). Results We detected 229 abnormalities in 203 patients on MDCTA and 231 abnormalities in 205 patients on CTVA. CTVA provided significant additional findings in 63.8% (146/229) of all abnormalities diagnosed by MDCTA (p
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