- Poster presentation
- Open Access
Non-contrast enhanced pulmonary vein MRI with a spatially selective slab inversion preparation sequence
https://doi.org/10.1186/1532-429X-12-S1-P116
© Hu et al; licensee BioMed Central Ltd. 2010
- Published: 21 January 2010
Keywords
- Pulmonary Vein
- Left Atrium
- Pulmonary Vein Isolation
- Right Atrium
- Inversion Pulse
Introduction
Non-contrast enhanced pulmonary vein (PV) MRI is an alternative to contrast-enhanced PV imaging for assessment of PV anatomy prior to and after PV isolation as a treatment for atrial fibrillation [1, 2]. We propose a non-contrast enhanced three-dimensional (3D) free-breathing ECG-gated thin-slab spoiled gradient recalled echo (GRE) sequence with a slab-selective inversion for PV MRI.
Methods
Sequence diagram (top) and illustration of imaging and inversion slab planning (bottom). A slab-selective inversion pulse is applied after the R-wave trigger, which is followed by an inversion time (TI) before imaging.
Results
A compatison of images acquired on the same healthy subject using a 3D ECG-gated free-breathing GRE sequence without (top row) and with (bottom row) a sigittal selective inversion slab. The conspicuity and segmentation of the PVs (arrows) and LA was greatly improved.
Relative SNR measures between the proposed (INV) and conventional (NON-INV) techniques. The proposed technique greatly suppresses RA and PA signal with minimal impact on PA and LA signal.
Conclusion
The proposed technique greatly enhances the conspicuity of the PVs and LA without significant loss of SNR.
Authors’ Affiliations
References
- Francois, et al: Radiology. 2009, 250 (3): 932-939. 10.1148/radiol.2502072137.View ArticlePubMedGoogle Scholar
- Krishnam, et al: Invest Radiol. 2009, 44 (8): 447-453. 10.1097/RLI.0b013e3181a7c6cb.View ArticlePubMedGoogle Scholar
Copyright
This article is published under license to BioMed Central Ltd.