Feasibility of dual-energy CT in the arterial phase: Imaging after endovascular aortic repair

AJR. American Journal of Roentgenology
Uma D NumburiSandra S Halliburton

Abstract

The purpose of this study was to investigate replacing unenhanced and arterial single-energy CT acquisitions after endovascular aneurysm repair with one dual-energy CT arterial acquisition. Thirty patients underwent arterial dual-energy CT (80 and 140 kVp) and venous single-energy CT (120 kVp) after endovascular aneurysm repair, and the radiation doses were compared with those of a standard triple-phase protocol. Both virtual unenhanced and arterial images were generated with dual-energy CT. Images were reviewed clinically for detection of endoleaks and evaluation of stent and calcium appearance. The aortic luminal attenuation on virtual unenhanced CT images was compared with that on previously acquired true unenhanced images. Virtual unenhanced, arterial, and venous images were compared for thrombus attenuation. Single-energy CT and dual-energy CT images were compared for noise. Replacement of two (unenhanced, arterial) of three single-energy CT acquisitions with one dual-energy CT acquisition resulted in 31% radiation dose savings. All images were clinically interpretable. Thoracic (32 +/- 2 vs 35 +/- 4 HU) and abdominal (30 +/- 3 vs 35 +/- 5 HU) aortic attenuation was similar on virtual unenhanced and true unenhanced images....Continue Reading

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Citations

Nov 1, 2012·AJR. American Journal of Roentgenology·Ioannis VlahosRobert Morgan
Nov 1, 2012·AJR. American Journal of Roentgenology·Thomas HenzlerU Joseph Schoepf
Mar 26, 2014·AJR. American Journal of Roentgenology·Shima AranHani H Abujudeh
Nov 10, 2015·Expert Review of Cardiovascular Therapy·Ibrahim DanadJames K Min
Jan 14, 2016·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Alexi OtrakjiMannudeep K Kalra
Feb 1, 2014·Journal of Vascular and Interventional Radiology : JVIR·Lucia FlorsKlaus D Hagspiel
Nov 19, 2011·Clinical Radiology·Achille MiletoGiorgio Ascenti
Feb 29, 2016·Current Cardiology Reports·Martin J WilleminkPál Maurovich-Horvat
Jun 13, 2015·JACC. Cardiovascular Imaging·Ibrahim DanadJames K Min
Mar 24, 2015·Radiology·Parag P TolatFrancisco A Quiroz
Dec 21, 2016·Journal of Thoracic Imaging·Larry A LatsonJane P Ko
Apr 17, 2018·The British Journal of Radiology·Sasan PartoviBrian Ghoshhajra
Nov 14, 2017·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Kevin KaliszPrabhakar Rajiah
Nov 27, 2018·AJR. American Journal of Roentgenology·Manuel PatinoDushyant V Sahani
Dec 23, 2011·Journal of Thoracic Imaging·Jane P KoDavid P Naidich
Sep 29, 2019·The British Journal of Radiology·Ross Edward TaylorNakul Gupta
Nov 16, 2011·Journal of Computer Assisted Tomography·Katherine E MaturenJoel F Platt
Sep 20, 2020·Skeletal Radiology·Rashpal SandhuNaveen Subhas
Nov 30, 2013·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Eladio J RiveraLon J Wilson

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