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Endoleaks after endovascular aortic aneurysm repair: Improved detection with noise-optimized virtual monoenergetic dual-energy CT.
Martin, Simon S; Wichmann, Julian L; Weyer, Hendrik; Scholtz, Jan-Erik; Leithner, Doris; Spandorfer, Adam; Bodelle, Boris; Jacobi, Volkmar; Vogl, Thomas J; Albrecht, Moritz H.
Afiliación
  • Martin SS; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany.
  • Wichmann JL; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany. Electronic address: docwichmann@gmail.com.
  • Weyer H; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany.
  • Scholtz JE; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany; Cardiac MR PET CT Program, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
  • Leithner D; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany.
  • Spandorfer A; Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA.
  • Bodelle B; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany.
  • Jacobi V; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany.
  • Vogl TJ; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany.
  • Albrecht MH; Department of Diagnostic and Interventional Radiology, University Hospital Frankfurt, Theodor-Stern-Kai 7, Frankfurt, Germany; Department of Radiology and Radiological Science, Medical University of South Carolina, Charleston, SC, USA.
Eur J Radiol ; 94: 125-132, 2017 Sep.
Article en En | MEDLINE | ID: mdl-28712695
PURPOSE: To assess image quality and diagnostic performance of a noise-optimized algorithm to reconstruct virtual monoenergetic images (VMI+) for the detection of endoleaks after endovascular abdominal aortic aneurysm repair (EVAR) using dual-energy CT angiography (DE-CTA). MATERIALS AND METHODS: Seventy-five patients (42 men; 66.2±11.7years) underwent DE-CTA following EVAR. Arterial phase images were acquired in dual-energy mode for the reconstruction of standard linearly-blended M_0.5, VMI+ and traditional monoenergetic images (VMI) at 40-100keV in 10-keV intervals. Contrast-to-noise ratios (CNR) were calculated for the area of leakage in patients with endoleaks. Diagnostic accuracy for endoleak detection was evaluated by three blinded radiologists using the objectively best series for each reconstruction technique. RESULTS: Thirty-four out of 75 patients showed endoleaks. Quantitative image parameters were highest at 40-keV VMI+ (CNR, 21.3±11.1), compared to M_0.5 (CNR, 10.9±5.5) and all VMI series that showed highest values at 70keV (CNR, 13.5±6.6; all P<0.001). ROC analysis for endoleak detection revealed an area under the curve (AUC) of 0.992 for 40-keV VMI+ series, which was significantly higher (P≤0.039) compared to 70-keV VMI (0.914) and M_0.5 series (0.916). CONCLUSIONS: Noise-optimized VMI+ series at 40keV improve diagnostic accuracy for the detection and rule-out of endoleaks after EVAR.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aneurisma de la Aorta / Complicaciones Posoperatorias / Imagen Radiográfica por Emisión de Doble Fotón / Endofuga Tipo de estudio: Diagnostic_studies / Observational_studies / Prognostic_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Eur J Radiol Año: 2017 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Irlanda
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Aneurisma de la Aorta / Complicaciones Posoperatorias / Imagen Radiográfica por Emisión de Doble Fotón / Endofuga Tipo de estudio: Diagnostic_studies / Observational_studies / Prognostic_studies Límite: Adult / Aged / Aged80 / Female / Humans / Male / Middle aged Idioma: En Revista: Eur J Radiol Año: 2017 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Irlanda