OBJECTIVES: Transcatheter Aortic Valve Implantation (TAVI) is an alternative to surgical valve replacement in high risk patients. Angiography of the aortic root, aorta and iliac arteries is required to select suitable candidates, but contrast agents can be harmful due to impaired renal function. We evaluated ECG-triggered high-pitch spiral dual source Computed Tomography (CT) with minimized volume of contrast agent to assess aortic root anatomy and vascular access. METHODS: 42 patients (82 ± 6 years) scheduled for TAVI underwent dual source (DS) CT angiography (CTA) of the aorta using a prospectively ECG-triggered high-pitch spiral mode (pitch = 3.4) with 40 mL iodinated contrast agent. We analyzed aortic root/iliac dimensions, attenuation, contrast to noise ratio (CNR), image noise and radiation exposure. RESULTS: Aortic root/iliac dimensions and distance of coronary ostia from the annulus could be determined in all cases. Mean aortic and iliac artery attenuation was 320 ± 70 HU and 340 ± 77 HU. Aortic/iliac CNR was 21.7 ± 6.8 HU and 14.5 ± 5.4 HU using 100 kV (18.8 ± 4.1 HU and 8.7 ± 2.6 HU using 120 kV). Mean effective dose was 4.5 ± 1.2 mSv. CONCLUSIONS: High-pitch spiral DSCTA can be used to assess the entire aorta and iliac arteries in TAVI candidates with a low volume of contrast agent while preserving diagnostic image quality.
OBJECTIVES: Transcatheter Aortic Valve Implantation (TAVI) is an alternative to surgical valve replacement in high risk patients. Angiography of the aortic root, aorta and iliac arteries is required to select suitable candidates, but contrast agents can be harmful due to impaired renal function. We evaluated ECG-triggered high-pitch spiral dual source Computed Tomography (CT) with minimized volume of contrast agent to assess aortic root anatomy and vascular access. METHODS: 42 patients (82 ± 6 years) scheduled for TAVI underwent dual source (DS) CT angiography (CTA) of the aorta using a prospectively ECG-triggered high-pitch spiral mode (pitch = 3.4) with 40 mL iodinated contrast agent. We analyzed aortic root/iliac dimensions, attenuation, contrast to noise ratio (CNR), image noise and radiation exposure. RESULTS: Aortic root/iliac dimensions and distance of coronary ostia from the annulus could be determined in all cases. Mean aortic and iliac artery attenuation was 320 ± 70 HU and 340 ± 77 HU. Aortic/iliac CNR was 21.7 ± 6.8 HU and 14.5 ± 5.4 HU using 100 kV (18.8 ± 4.1 HU and 8.7 ± 2.6 HU using 120 kV). Mean effective dose was 4.5 ± 1.2 mSv. CONCLUSIONS: High-pitch spiral DSCTA can be used to assess the entire aorta and iliac arteries in TAVI candidates with a low volume of contrast agent while preserving diagnostic image quality.
Authors: Itsik Ben-Dor; Ron Waksman; Nicholas N Hanna; Arnold Raizon; Lowell F Satler; Rebecca Torguson; Gaby Weissman; Petros Okubagzi; Zhenyi Xue; Yanlin Li; Manuel A Gonzalez; Gabriel Maluenda; Michael A Gaglia; Kohei Wakabayashi; Cedric Delhaye; Asmir I Syed; Sara D Collins; William O Suddath; Kenneth M Kent; Joseph Lindsay; Augusto D Pichard Journal: Am J Cardiol Date: 2010-04-02 Impact factor: 2.778
Authors: Alec Vahanian; Ottavio Alfieri; Nawwar Al-Attar; Manuel Antunes; Jeroen Bax; Bertrand Cormier; Alain Cribier; Peter De Jaegere; Gerard Fournial; Arie Pieter Kappetein; Jan Kovac; Susanne Ludgate; Francesco Maisano; Neil Moat; Friedrich Mohr; Patrick Nataf; Luc Pierard; José Luis Pomar; Joachim Schofer; Pilar Tornos; Murat Tuzcu; Ben van Hout; Ludwig K Von Segesser; Thomas Walther Journal: EuroIntervention Date: 2008-08 Impact factor: 6.534
Authors: Alain Cribier; Helene Eltchaninoff; Assaf Bash; Nicolas Borenstein; Christophe Tron; Fabrice Bauer; Genevieve Derumeaux; Frederic Anselme; François Laborde; Martin B Leon Journal: Circulation Date: 2002-12-10 Impact factor: 29.690
Authors: Robert Goetti; Stephan Baumüller; Gudrun Feuchtner; Paul Stolzmann; Christoph Karlo; Hatem Alkadhi; Sebastian Leschka Journal: AJR Am J Roentgenol Date: 2010-04 Impact factor: 3.959
Authors: David A Wood; Laurens F Tops; John R Mayo; Sanjeevan Pasupati; Martin J Schalij; Karin Humphries; May Lee; Abdullah Al Ali; Brad Munt; Rob Moss; Christopher R Thompson; Jeroen J Bax; John G Webb Journal: Am J Cardiol Date: 2009-05-01 Impact factor: 2.778
Authors: Martin Petersilka; Herbert Bruder; Bernhard Krauss; Karl Stierstorfer; Thomas G Flohr Journal: Eur J Radiol Date: 2008-10-07 Impact factor: 3.528
Authors: M Gutberlet; B Foldyna; M Grothoff; C Lücke; F Riese; S Nitzsche; M Haensig; K von Aspern; D Holzhey; H Thiele; G Schuler; A Linke; F-W Mohr; L Lehmkuhl Journal: Radiologe Date: 2013-10 Impact factor: 0.635
Authors: Martin Beeres; Andreas M Bucher; Julian L Wichmann; Claudia Frellesen; Jan E Scholtz; Moritz Albrecht; Boris Bodelle; Nour-Eldin A Nour-Eldin; Clara Lee; Moritz Kaup; Thomas J Vogl; Tatjana Gruber-Rouh Journal: Radiol Med Date: 2016-04-21 Impact factor: 3.469