OBJECTIVE: To evaluate the effect of a newly developed connecting tube, which generates a spiral flow of saline, on aortic and hepatic contrast enhancement during hepatic-arterial phase (HAP) and portal venous phase (PVP) computed tomography (CT). METHODS:Eighty patients were randomly assigned to one of two protocols: with a new or a conventional tube. The contrast material (600 mgI/kg) was delivered over 30 s; this was followed by the administration of 25 ml saline solution delivered at the same injection rate as the contrast material. Unenhanced and contrast-enhanced CT images of the upper abdomen were obtained. We calculated the changes in the CT number (∆HU) for the aorta during HAP and PVP, and for the liver during PVP. We compared ∆HU between protocols. RESULTS: The mean ∆HU for the abdominal aorta during HAP was significantly higher with the new tube protocol than with the conventional tube protocol (322 ± 53 vs. 290 ± 53, P < 0.01). There were no significant differences in the mean ∆HU for the abdominal aorta and liver during PVP between the two protocols (P > 0.05). CONCLUSION: The new connecting tube increased the effect of a saline chaser and significantly improved aortic enhancement during HAP. KEY POINTS: • Optimal administration of intravenous contrast material is essential for optimal CT quality. • A new connecting tube can generate spiral flow, which improves intravenous administration. • The new connecting tube improved aortic contrast enhancement during the hepatic-arterial phase. • The new connecting tube increased the effect of a saline chaser.
RCT Entities:
OBJECTIVE: To evaluate the effect of a newly developed connecting tube, which generates a spiral flow of saline, on aortic and hepatic contrast enhancement during hepatic-arterial phase (HAP) and portal venous phase (PVP) computed tomography (CT). METHODS: Eighty patients were randomly assigned to one of two protocols: with a new or a conventional tube. The contrast material (600 mgI/kg) was delivered over 30 s; this was followed by the administration of 25 ml saline solution delivered at the same injection rate as the contrast material. Unenhanced and contrast-enhanced CT images of the upper abdomen were obtained. We calculated the changes in the CT number (∆HU) for the aorta during HAP and PVP, and for the liver during PVP. We compared ∆HU between protocols. RESULTS: The mean ∆HU for the abdominal aorta during HAP was significantly higher with the new tube protocol than with the conventional tube protocol (322 ± 53 vs. 290 ± 53, P < 0.01). There were no significant differences in the mean ∆HU for the abdominal aorta and liver during PVP between the two protocols (P > 0.05). CONCLUSION: The new connecting tube increased the effect of a saline chaser and significantly improved aortic enhancement during HAP. KEY POINTS: • Optimal administration of intravenous contrast material is essential for optimal CT quality. • A new connecting tube can generate spiral flow, which improves intravenous administration. • The new connecting tube improved aortic contrast enhancement during the hepatic-arterial phase. • The new connecting tube increased the effect of a saline chaser.
Authors: Helmut Schoellnast; Manfred Tillich; Michael J Deutschmann; Hannes A Deutschmann; Gottfried J Schaffler; Horst R Portugaller Journal: Invest Radiol Date: 2004-01 Impact factor: 6.016
Authors: Dae Young Yoon; Su Yeon You; Chul Soon Choi; Suk Ki Chang; Eun Joo Yun; Young Lan Seo; Sang Joon Park; Yu-Jin Lee; Jeung Hee Moon; Young-Soo Rho; Jin-Hwan Kim Journal: Neuroradiology Date: 2006-09-15 Impact factor: 2.804
Authors: Florian F Behrendt; Philipp Bruners; Sebastian Keil; Cedric Plumhans; Andreas H Mahnken; Marco Das; Diana Ackermann; Rolf W Günther; Georg Mühlenbruch Journal: Eur J Radiol Date: 2009-04-05 Impact factor: 3.528
Authors: Cécile de Monyé; Filippo Cademartiri; Thomas T de Weert; Dorine A M Siepman; Diederik W J Dippel; Aad van Der Lugt Journal: Radiology Date: 2005-09-16 Impact factor: 11.105
Authors: Florian F Behrendt; Gregor Jost; Hubertus Pietsch; Sebastian Keil; Felix M Mottaghy; Rolf W Günther; Andreas H Mahnken Journal: Invest Radiol Date: 2011-04 Impact factor: 6.016
Authors: Chang Hyun Lee; Jin Mo Goo; Kyongtae T Bae; Hyun Ju Lee; Kwang Gi Kim; Eun Ju Chun; Chang Min Park; Jung-Gi Im Journal: Invest Radiol Date: 2007-07 Impact factor: 6.016