BMC Medical Imaging | |
Prospective, randomized comparison of gadopentetate and gadobutrol to assess chronic myocardial infarction applying cardiovascular magnetic resonance | |
Jeanette Schulz-Menger1  Ralf Wassmuth1  Johannes Schüler1  Julius Traber1  Florian von Knobelsdorff-Brenkenhoff1  Daniel Messroghli2  Andre Rudolph1  | |
[1] Dept. of Cardiology and Nephrology, HELIOS-Kliniken Berlin Buch, Schwanebecker Chaussee 50, Berlin, 13125, Germany;Department of Congenital Heart Disease and Pediatric Cardiology, Deutsches Herzzentrum Berlin, Berlin, Germany | |
关键词: Late gadolinium enhancement; Chronic myocardial infarction; Gd-DTPA; Gadobutrol; Contrast media; Cardiovascular Magnetic Resonance; | |
Others : 1233369 DOI : 10.1186/s12880-015-0099-3 |
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received in 2015-05-26, accepted in 2015-11-09, 发布年份 2015 | |
【 摘 要 】
Background
We hypothesized that the contrast medium gadobutrol is not inferior compared to Gd-DTPA in identifying and quantifying ischemic late gadolinium enhancement (LGE), even by using a lower dose.
Methods
We prospectively enrolled 30 patients with chronic myocardial infarction as visualized by LGE during clinical routine scan at 1.5 T with 0.20 mmol/kg Gd-DTPA. Participants were randomized to either 0.15 mmol/kg gadobutrol (group A) or 0.10 mmol/kg gadobutrol (group B). CMR protocol was identical in both exams.
LGE was quantified using a semiautomatic approach. Signal intensities of scar, remote myocardium, blood and air were measured. Signal to noise (SNR) and contrast to noise ratios (CNR) were calculated.
Results
Signal intensities were not different between Gd-DTPA and gadobutrol in group A, whereas significant differences were detected in group B. SNR of injured myocardium (53.5+/−21.4 vs. 30.1+/−10.4, p = 0.0001) and CNR between injured and remote myocardium (50.3+/−20.3 vs. 27.3+/−9.3, p < 0.0001) were lower in gadobutrol. Infarct size was lower in both gadobutrol groups compared to Gd-DTPA (group A: 16.8+/−10.2 g vs. 12.8+/−6.8 g, p = 0.03; group B: 18.6+/−12.0 g vs. 14.0+/−9.9 g, p = 0.0016).
Conclusions
Taking application of 0.2 mmol/kg Gd-DTPA as the reference, the delineation of infarct scar was similar with 0.15 mmol/kg gadobutrol, whereas the use 0.10 mmol/kg gadobutrol led to reduced tissue contrast.
Trial registration
The study had been registered under EudraCT Number: 2010-020775-22. Registration date: 2010.08.10
【 授权许可】
2015 Rudolph et al.
【 预 览 】
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