PURPOSE: To describe prospective ECG-triggered dual-source CT dual-step pulsing (pECG(dual_step)) for evaluation of coronary arteries and cardiac function. METHODS: Fifty-one consecutive patients pre- or post-cardiovascular surgery were examined with adaptive sequential tube current modulated (pECG(dual-step)) 128-slice dual-source CT without heart rate control (main padding window: 40% RR interval >65 bpm/70% RR interval <65 bpm). Image quality of coronary arteries was graded (4-point scale), and cardiac function was evaluated. RESULTS: Mean HR was 68 bpm. Thirty-seven patients were in stable sinus rhythm (SR); 14 had arrhythmia. Image quality of coronary arteries was diagnostic in 804/816 (98%) of segments. The number of non-diagnostic segments was higher in patients with arrhythmia as compared to those in SR (4% vs. 0.5%; p = 0.01), and there were fewer segments with excellent image quality (79% vs. 94%; p < 0.001) and more segments with impaired image quality (p < 0.001 and p = 0.002). Global and regional LV function could be evaluated in 41 (80%) and 47 (92%) patients, and valvular function in 48 (94%). In 11/14 of patients with arrhythmia, the second step switched to full mAs, increasing radiation exposure to 8.6 mAs (p < 0.001). The average radiation dose was 3.8 mSv (range, 1.7-7.9) in patients in SR. CONCLUSION: pECG(dual-step)128-slice DSCT is feasible for the evaluation of coronary arteries and cardiac function without heart rate control in patients in stable sinus rhythm at a low radiation dose.
PURPOSE: To describe prospective ECG-triggered dual-source CT dual-step pulsing (pECG(dual_step)) for evaluation of coronary arteries and cardiac function. METHODS: Fifty-one consecutive patients pre- or post-cardiovascular surgery were examined with adaptive sequential tube current modulated (pECG(dual-step)) 128-slice dual-source CT without heart rate control (main padding window: 40% RR interval >65 bpm/70% RR interval <65 bpm). Image quality of coronary arteries was graded (4-point scale), and cardiac function was evaluated. RESULTS: Mean HR was 68 bpm. Thirty-seven patients were in stable sinus rhythm (SR); 14 had arrhythmia. Image quality of coronary arteries was diagnostic in 804/816 (98%) of segments. The number of non-diagnostic segments was higher in patients with arrhythmia as compared to those in SR (4% vs. 0.5%; p = 0.01), and there were fewer segments with excellent image quality (79% vs. 94%; p < 0.001) and more segments with impaired image quality (p < 0.001 and p = 0.002). Global and regional LV function could be evaluated in 41 (80%) and 47 (92%) patients, and valvular function in 48 (94%). In 11/14 of patients with arrhythmia, the second step switched to full mAs, increasing radiation exposure to 8.6 mAs (p < 0.001). The average radiation dose was 3.8 mSv (range, 1.7-7.9) in patients in SR. CONCLUSION:pECG(dual-step)128-slice DSCT is feasible for the evaluation of coronary arteries and cardiac function without heart rate control in patients in stable sinus rhythm at a low radiation dose.
Authors: Marc Dewey; Mira Müller; Stephan Eddicks; Dirk Schnapauff; Florian Teige; Wolfgang Rutsch; Adrian C Borges; Bernd Hamm Journal: J Am Coll Cardiol Date: 2006-11-01 Impact factor: 24.094
Authors: James P Earls; Elise L Berman; Bruce A Urban; Charlene A Curry; Judith L Lane; Robert S Jennings; Colin C McCulloch; Jiang Hsieh; John H Londt Journal: Radiology Date: 2008-01-14 Impact factor: 11.105
Authors: Dirk Ertel; Michael M Lell; Frank Harig; Thomas Flohr; Bernhard Schmidt; Willi A Kalender Journal: Eur Radiol Date: 2009-06-30 Impact factor: 5.315
Authors: Paul Stolzmann; Sebastian Leschka; Hans Scheffel; Tobias Krauss; Lotus Desbiolles; André Plass; Michele Genoni; Thomas G Flohr; Simon Wildermuth; Borut Marincek; Hatem Alkadhi Journal: Radiology Date: 2008-10 Impact factor: 11.105
Authors: Jonathon Leipsic; David Wood; David Manders; Fabian Nietlispach; Jean Bernard Masson; John Mayo; Saad Al-Bugami; John G Webb Journal: AJR Am J Roentgenol Date: 2009-09 Impact factor: 3.959
Authors: Hatem Alkadhi; Lotus Desbiolles; Paul Stolzmann; Sebastian Leschka; Hans Scheffel; André Plass; Thomas Schertler; Pedro Trigo Trindade; Michele Genoni; Philippe Cattin; Borut Marincek; Thomas Frauenfelder Journal: Invest Radiol Date: 2009-04 Impact factor: 6.016
Authors: Sebastian Leschka; Paul Stolzmann; Lotus Desbiolles; Stephan Baumueller; Robert Goetti; Thomas Schertler; Hans Scheffel; Andre Plass; Volkmar Falk; Gudrun Feuchtner; Borut Marincek; Hatem Alkadhi Journal: Eur Radiol Date: 2009-09-16 Impact factor: 5.315
Authors: Harald Seifarth; Susanne Wienbeck; Michael Püsken; Kai-Uwe Juergens; David Maintz; Christian Vahlhaus; Walter Heindel; Roman Fischbach Journal: AJR Am J Roentgenol Date: 2007-12 Impact factor: 3.959
Authors: Ammar Sarwar; Michael D Shapiro; Khurram Nasir; Koen Nieman; Cesar H Nomura; Thomas J Brady; Ricardo C Cury Journal: J Cardiovasc Comput Tomogr Date: 2009-05-12
Authors: Philipp Burghard; Fabian Plank; Christoph Beyer; Silvana Müller; Jakob Dörler; Marc-Michael Zaruba; Leo Pölzl; Gerhard Pölzl; Andrea Klauser; Stefan Rauch; Fabian Barbieri; Christian-Ekkehardt Langer; Wilfried Schgoer; Eric E Williamson; Gudrun Feuchtner Journal: Eur Radiol Date: 2018-06-04 Impact factor: 5.315