Pulmonary Vein Ablation (rev. 7/1/2013)
Indications: Pulmonary vein pre-ablation planning, post-ablation followup, pulmonary vein stenosis
SEQUENCES
NOTES
Localizer
Axial bright blood MBH chest
Coronal bright blood MBH chest
2 chamber CINE
Fake short axis CINE
4 chamber CINE
-- CONTRAST--
Hi-res isotropic coronal TWIST angio
Isotropic conventional left atrial axial angio
Short axis stack CINE
3 chamber CINE
TI scout
MDE single shot SAS
MDE single shot 2 chamber
MDE single shot 4 chamber
MDE single shot 3 chamber
MDE segmented SAS
MDE segmented 2 chamber
MDE single shot 4 chamber
MDE single shot 3 chamber
Aorta through plane Phase Contrast (VENC 150)
*Optional through-plane PC pulmonary veins (VENC 30)
Both AXIAL and CORONAL bright blood TrueFISP scouts
Two angiographic sequences are needed:
1) High resolution coronal isotropic TWIST
-Thick straight coronal slab centered on Left Atrium.
-Use axial and coronal bright blood scout to be sure to include all pulmonary veins and entire LA.
-Can alter parameters to meet coverage needs, but make sure that it remains nearly ISOTROPIC and ensure the TEMPORAL RESOLUTION does not go too long (5-7 seconds optimal). Check this by hovering mouse over "TA"
2) Left Atrial Angiogram
Straigh axial
Time injection for when contrast opacifies LEFT ATRIUM and PULMONARY VEINS
*Optional through-plane Phase Contrast pulmonary veins
Use Bright Blood scouts and isotropic angiograms to prescribe true cross-sectional slices through the pulmonary veins proximal to ostia.
VENC 30 to start.
VENC 60 if pulmonary vein stenosis