OBJECTIVE: We compared the effect of a dual-region-of-interest (ROI) bolus-tracking technique on interpatient variability of arterial contrast enhancement with that of the conventional bolus-tracking technique in coronary computed tomographic angiography (CTA) on a 320-row scanner. METHODS: This study included 100 patients who underwent coronary CTA using one of two protocols: (1) 50 patients underwent scanning using a conventional single-ROI bolus-tracking technique (P-single) with an ROI placed in the ascending aorta, and (2) 50 patients underwent scanning using a dual-ROI technique (P-dual) with two ROIs placed in the pulmonary trunk and the ascending aorta. CT attenuation in the ascending aorta and coronary arteries, and the interpatient variability were compared between the two scanning protocols. RESULTS: The mean CT attenuation of the ascending aorta and coronary arteries tended to be higher for P-dual than for P-single, but the difference was not significant (p = 0.08-0.30). The interpatient variability of contrast enhancement (SD of the CT attenuation) was significantly smaller for P-dual than for P-single (p < 0.01). CONCLUSION: The dual-ROI bolus-tracking technique can reduce interpatient variability of arterial contrast enhancement in coronary CTA on a 320-row scanner. Advances in knowledge: The use of a dual-ROI bolus-tracking technique can provide sufficient and consistent arterial enhancement of coronary CTA.
OBJECTIVE: We compared the effect of a dual-region-of-interest (ROI) bolus-tracking technique on interpatient variability of arterial contrast enhancement with that of the conventional bolus-tracking technique in coronary computed tomographic angiography (CTA) on a 320-row scanner. METHODS: This study included 100 patients who underwent coronary CTA using one of two protocols: (1) 50 patients underwent scanning using a conventional single-ROI bolus-tracking technique (P-single) with an ROI placed in the ascending aorta, and (2) 50 patients underwent scanning using a dual-ROI technique (P-dual) with two ROIs placed in the pulmonary trunk and the ascending aorta. CT attenuation in the ascending aorta and coronary arteries, and the interpatient variability were compared between the two scanning protocols. RESULTS: The mean CT attenuation of the ascending aorta and coronary arteries tended to be higher for P-dual than for P-single, but the difference was not significant (p = 0.08-0.30). The interpatient variability of contrast enhancement (SD of the CT attenuation) was significantly smaller for P-dual than for P-single (p < 0.01). CONCLUSION: The dual-ROI bolus-tracking technique can reduce interpatient variability of arterial contrast enhancement in coronary CTA on a 320-row scanner. Advances in knowledge: The use of a dual-ROI bolus-tracking technique can provide sufficient and consistent arterial enhancement of coronary CTA.
Authors: Allen J Taylor; Manuel Cerqueira; John McB Hodgson; Daniel Mark; James Min; Patrick O'Gara; Geoffrey D Rubin; Christopher M Kramer; Daniel Berman; Alan Brown; Farooq A Chaudhry; Ricardo C Cury; Milind Y Desai; Andrew J Einstein; Antoinette S Gomes; Robert Harrington; Udo Hoffmann; Rahul Khare; John Lesser; Christopher McGann; Alan Rosenberg; Robert Schwartz; Marc Shelton; Gerald W Smetana; Sidney C Smith Journal: J Am Coll Cardiol Date: 2010-11-23 Impact factor: 24.094
Authors: Jörg Hausleiter; Tanja S Meyer; Eugenio Martuscelli; Pietro Spagnolo; Hiroaki Yamamoto; Patricia Carrascosa; Thomas Anger; Lukas Lehmkuhl; Hatem Alkadhi; Stefan Martinoff; Martin Hadamitzky; Franziska Hein; Bernhard Bischoff; Miriam Kuse; Albert Schömig; Stephan Achenbach Journal: JACC Cardiovasc Imaging Date: 2012-05
Authors: Filippo Cademartiri; Nico R Mollet; Pedro A Lemos; Fransesco Saia; Massimo Midiri; Pim J de Feyter; Gabriel P Krestin Journal: AJR Am J Roentgenol Date: 2006-10 Impact factor: 3.959
Authors: Kyongtae T Bae; Brian A Seeck; Charles F Hildebolt; Cheng Tao; Fang Zhu; Masayuki Kanematsu; Pamela K Woodard Journal: AJR Am J Roentgenol Date: 2008-03 Impact factor: 3.959
Authors: Julie M Miller; Carlos E Rochitte; Marc Dewey; Armin Arbab-Zadeh; Hiroyuki Niinuma; Ilan Gottlieb; Narinder Paul; Melvin E Clouse; Edward P Shapiro; John Hoe; Albert C Lardo; David E Bush; Albert de Roos; Christopher Cox; Jeffery Brinker; João A C Lima Journal: N Engl J Med Date: 2008-11-27 Impact factor: 91.245