Volume 15 Supplement 1
Interleaved T2 preparation for simultaneous coronary artery and pulmonary artery and vein visualization
© Butzbach et al; licensee BioMed Central Ltd. 2013
Published: 30 January 2013
Patients with congenital heart disease (CHD) were examined with a dynamic T2prep 3D-whole heart acquisition (mean age 3 +/- 6.4 years, n=4) and compared to ten healthy subjects (mean 34 years, STD +/- 6.87, n=10) in diastole. An independent samples t-test and a paired t-test were performed to compare normally distributed variables.
An increase of SNR was seen in children and healthy volunteers in the subtracted images. After analyzing the B0-map, statistically significant differences were shown for the pulmonary veins (p<0.027).
The brightest signal in all cases was observed in the pulmonary circulation. This effect is caused by an off-resonance phenomenon. Whilst using T2-preparations pulses, the B0-field inhomogeneity acts as a susceptibility background gradient and leads to a suppression of moving tissue and blood and consequently to a signal enhanced pulmonary circulation in subtraction images.
Division of Imaging Sciences, The Rayne's Insitute
King's College London
This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.