Part of the Medical Radiology book series (MEDRAD)


Most pathologies of the aorta require multiphase MSCT-protocols, which leads to high radiation doses. Especially in patients who routinely have to undergo MSCT, like patients after endovascular aneurysm repair, dose reduction strategies are desirable. Dual Energy CT offers the possibility to create virtual non-contrast images from arterial or venous datasets and therefore decrease radiation exposure. A single phase protocol with a venous-phase CTA and a derived virtual non-contrast enhanced dataset has been evaluated in several studies for patients after endovascular aneurysm repair. Virtual non-contrast images are a reasonable approximation of true non-contrast images and can replace the latter in this patient collective. Future studies should investigate the application of virtual non-contrast images in other aortic pathologies, e.g. intramural hematoma.


Intramural Hematoma Dual Source Endovascular Aneurysm Repair Aortic Pathology Dual Source Scanner 


  1. Chandarana H, Godoy MC, Vlahos I, Graser A, Babb J, Leidecker C et al (2008) Abdominal aorta: evaluation with dual-source dual-energy multidetector CT after endovascular repair of aneurysms–initial observations. Radiology 249(2):692–700PubMedCrossRefGoogle Scholar
  2. Ishida M, Kato N, Hirano T, Shimono T, Shimpo H, Takeda K (2007) Thoracic CT findings following endovascular stent-graft treatment for thoracic aortic aneurysm. J Endovasc Ther 14(3):333–341PubMedCrossRefGoogle Scholar
  3. Johnson TR, Krauss B, Sedlmair M, Grasruck M, Bruder H, Morhard D et al (2007) Material differentiation by dual energy CT: initial experience. Eur Radiol 17(6):1510–1517PubMedCrossRefGoogle Scholar
  4. Lawler LP, Fishman EK (2003) Multidetector row computed tomography of the aorta and peripheral arteries. Cardiol Clin 21(4):607–629PubMedCrossRefGoogle Scholar
  5. Macari M, Chandarana H, Schmidt B, Lee J, Lamparello P, Babb J (2006) Abdominal aortic aneurysm: can the arterial phase at CT evaluation after endovascular repair be eliminated to reduce radiation dose? Radiology 241(3):908–914PubMedCrossRefGoogle Scholar
  6. Rubin GD (2003) CT angiography of the thoracic aorta. Semin Roentgenol 38(2):115–134PubMedCrossRefGoogle Scholar
  7. Rubin GD, Kalra MK (2006) MDCT angiography of the thoracic aorta. In: Saini S, Rubin GS, Kalra MK (eds) MDCT: a practical approach. Springer, Berlin, p 111CrossRefGoogle Scholar
  8. Schenzle JC, Sommer WH, Neumaier K, Michalski G, Lechel U, Nikolaou K et al (2010) Dual energy CT of the chest: how about the dose? Invest Radiol 45:347–353PubMedGoogle Scholar
  9. Sommer WH, Theisen D, Wintersperger B, (2009) CT angiography of the aorta. Reiser MF, Becker CR, Nikolaou K, Glazer G. (eds.) 3rd ed., XII, 628 p. 982 illus., 200 in color., Hardcover 292–306Google Scholar
  10. Sommer WH, Graser A, Becker CR, Clevert DA, Reiser MF, Nikolaou K et al (2010) Image quality of virtual non-contrast images derived from dual energy CT angiography after endovascular aneurysm repair. J Vasc Interv Radiol 21:315–321PubMedCrossRefGoogle Scholar
  11. Stolzmann P, Frauenfelder T, Pfammatter T, Peter N, Scheffel H, Lachat M et al (2008) Endoleaks after endovascular abdominal aortic aneurysm repair: detection with dual-energy dual-source CT. Radiology 249(2):682–691PubMedCrossRefGoogle Scholar
  12. Theisen D, Tengg-Kobligk H, Michaely H, Nikolaou K, Reiser MF, Wintersperger BJ (2007) CT angiography of the aorta. Radiologe 47(11):982–992PubMedCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Department of Clinical RadiologyUniversity of Munich, Grosshadern HospitalMunichGermany

Personalised recommendations