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CC BY 4.0 · Aorta (Stamford) 2013; 01(03): 198-201
DOI: 10.12945/j.aorta.2013.13-022
Images in Aortic Disease
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Magnetic Resonance Imaging Findings in a Positron Emission Tomography-Positive Thoracic Aortic Aneurysm

Alain Nchimi
1   Department of Cardiovascular and Thoracic Imaging, University Hospital, Liège, Belgium
,
Thierry Couvreur
1   Department of Cardiovascular and Thoracic Imaging, University Hospital, Liège, Belgium
,
Benoit Meunier
1   Department of Cardiovascular and Thoracic Imaging, University Hospital, Liège, Belgium
,
Natzi Sakalihasan
2   Department of Cardiovascular Surgery, University Hospital, Liège, Belgium
› Author Affiliations
Further Information

Publication History

09 April 2013

21 August 2013

Publication Date:
28 September 2018 (online)

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Abstract

Diffusion-weighted MRI (DW-MRI) and 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) findings are described in a patient with a thoracic aortic aneurysm. Both examinations have the ability to noninvasively assess biological processes associated with aneurysm instability and therefore to potentially impact clinical decision-making regardless of the vessel size. Despite similarities between images on both techniques, FDG-PET evaluates glycolysis, while DW-MRI evaluates cell density, edema, and perfusion. Longitudinal studies including larger patient numbers are needed to investigate the temporal continuum and clinical significance of these findings.

Key Words

Magnetic resonance imaging - Positron emission tomography - Aortic aneurysm
 

  • References

  • 1 Patel MI, Hardman DT, Fisher CM, Appleberg M. Current views on the pathogenesis of abdominal aortic aneurysms. J Am Coll Surg 1995; 181: 371-382
    PubMedSearch in Google Scholar
  • 2 Sakalihasan N, Limet R, Defawe O. Abdominal aortic aneurysm. Lancet 2005; 365: 1577-1589 . 10.1016/S0140-6736(05)66459-8
    CrossrefPubMedSearch in Google Scholar
  • 3 Reeps C, Essler M, Pelisek J, Seidl S, Eckstein HH, Krause BJ. Increased 18F-fluorodeoxyglucose uptake in abdominal aortic aneurysms in positron emission/computed tomography is associated with inflammation, aortic wall instability, and acute symptoms. J Vasc Surg 2008; 48: 417-423 . 10.1016/j.jvs.2008.03.059
    CrossrefPubMedSearch in Google Scholar
  • 4 Padhani AR, Koh DM, Collins DJ. Whole-body diffusion-weighted MR imaging in cancer: current status and research directions. Radiology 2011; 261: 700-718 . 10.1148/radiol.11110474
    CrossrefPubMedSearch in Google Scholar
  • 5 Jacobs MA, Ibrahim TS, Ouwerkerk R. AAPM/RSNA physics tutorials for residents: MR imaging: brief overview and emerging applications. Radiographics 2007; 27: 1213-1229 . 10.1148/rg.274065115
    CrossrefPubMedSearch in Google Scholar
  • 6 Nchimi A, Defawe O, Brisbois D, Broussaud TKY, Defraigne JO, Magotteaux P. , et al. MR imaging of iron phagocytosis in intraluminal thrombi of abdominal aortic aneurysms in humans. Radiology 2010; 254: 973-981 . 10.1148/radiol.09090657
    CrossrefPubMedSearch in Google Scholar
  • 7 Fontaine V, Jacob MP, Houard X, Rossignol P, Plissonnier D, Angles-Cano E. , et al. Involvement of the mural thrombus as a site of protease release and activation in human aortic aneurysms. Am J Pathol 2002; 161: 1701-1710 . 10.1016/S0002-9440(10)64447-1
    CrossrefPubMedSearch in Google Scholar