OBJECTIVE: To compare dose and image quality of 64-slice, first and second generation dual-energy CT (DECT) for CT pulmonary angiography (CTPA). METHODS: Totally 120 patients, 30 in each group, underwent CTPA on a first generation (group 1: single-energy, 120 kV/145 mAs; group 2: DE, 140/80 kV, 70/350 mAs) or second generation dual-source DECT device (group 3: DE, 100/Sn140 kV, 120/102 mAs; group 4: DE, 80/Sn140 kV, 202/86 mAs). CTDIvol, DLP, background noise (BN), thorax diameter and attenuation in the pulmonary trunk were compared. RESULTS: Thorax diameter and attenuation in the pulmonary trunk did not differ significantly (p > 0.4 and >0.19) between the groups. Mean CTDIvol and DLP were significantly lower (p < 0.003) in group 4 (6.2 ± 1.6 mGy/170 ± 41 mGycm) compared to group 1 (8.5 ± 2.6 mGy/235 ± 117 mGycm), group 2 (9.2 ± 3.3 mGy/224 ± 122 mGycm) and group 3 (8.7 ± 2.8 mGy/246 ± 86 mGycm). BN was significantly lower (p < 0.0001) in group 4 (12 ± 3 HU) and group 1 (13 ± 6 HU) compared to group 3 and 2 (16 ± 6 HU and 23 ± 9). CONCLUSION: The use of second generation DECT in 80/Sn140 kV configuration allows for significant dose reduction with image quality similar to 120 kV CTPA.
OBJECTIVE: To compare dose and image quality of 64-slice, first and second generation dual-energy CT (DECT) for CT pulmonary angiography (CTPA). METHODS: Totally 120 patients, 30 in each group, underwent CTPA on a first generation (group 1: single-energy, 120 kV/145 mAs; group 2: DE, 140/80 kV, 70/350 mAs) or second generation dual-source DECT device (group 3: DE, 100/Sn140 kV, 120/102 mAs; group 4: DE, 80/Sn140 kV, 202/86 mAs). CTDIvol, DLP, background noise (BN), thorax diameter and attenuation in the pulmonary trunk were compared. RESULTS: Thorax diameter and attenuation in the pulmonary trunk did not differ significantly (p > 0.4 and >0.19) between the groups. Mean CTDIvol and DLP were significantly lower (p < 0.003) in group 4 (6.2 ± 1.6 mGy/170 ± 41 mGycm) compared to group 1 (8.5 ± 2.6 mGy/235 ± 117 mGycm), group 2 (9.2 ± 3.3 mGy/224 ± 122 mGycm) and group 3 (8.7 ± 2.8 mGy/246 ± 86 mGycm). BN was significantly lower (p < 0.0001) in group 4 (12 ± 3 HU) and group 1 (13 ± 6 HU) compared to group 3 and 2 (16 ± 6 HU and 23 ± 9). CONCLUSION: The use of second generation DECT in 80/Sn140 kV configuration allows for significant dose reduction with image quality similar to 120 kV CTPA.
Authors: Jiří Ferda; Eva Ferdová; Hynek Mírka; Jan Baxa; Alena Bednářová; Thomas Flohr; Bernhard Schmidt; Martin Matějovič; Boris Kreuzberg Journal: Eur J Radiol Date: 2009-08-29 Impact factor: 3.528
Authors: Martine Remy-Jardin; Massimo Pistolesi; Lawrence R Goodman; Warren B Gefter; Alexander Gottschalk; John R Mayo; H Dirk Sostman Journal: Radiology Date: 2007-09-11 Impact factor: 11.105
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: Sven F Thieme; Christoph R Becker; Marcus Hacker; Konstantin Nikolaou; Maximilian F Reiser; Thorsten R C Johnson Journal: Eur J Radiol Date: 2008-09-05 Impact factor: 3.528
Authors: Tobias De Zordo; Klemens von Lutterotti; Christian Dejaco; Peter F Soegner; Renate Frank; Friedrich Aigner; Andrea S Klauser; Christoph Pechlaner; U Joseph Schoepf; Werner R Jaschke; Gudrun M Feuchtner Journal: Eur Radiol Date: 2011-08-28 Impact factor: 5.315
Authors: Doris Leithner; Tatjana Gruber-Rouh; Martin Beeres; Julian L Wichmann; Scherwin Mahmoudi; Simon S Martin; Lukas Lenga; Moritz H Albrecht; Christian Booz; Thomas J Vogl; Jan-Erik Scholtz Journal: Br J Radiol Date: 2018-06-05 Impact factor: 3.039
Authors: Lukas Lenga; Franziska Trapp; Moritz H Albrecht; Julian L Wichmann; Addison A Johnson; Ibrahim Yel; Tommaso D'Angelo; Christian Booz; Thomas J Vogl; Simon S Martin Journal: Eur Radiol Date: 2019-01-21 Impact factor: 5.315
Authors: Elizabeth K Weidman; Andrew J Plodkowski; Darragh F Halpenny; Sara A Hayes; Rocio Perez-Johnston; Junting Zheng; Chaya Moskowitz; Michelle S Ginsberg Journal: Radiology Date: 2018-09-11 Impact factor: 11.105