Atrial Septal Defect - ASD (rev. 10/17/19)
Indication: Detection, shunt fraction calculation (Qp/Qs), defect measurement for treatment planning
SEQUENCES
Localizer
Axial bright blood chest
Coronal bright blood chest
Axial dark blood chest
2 chamber CINE
Fake short axis CINE
4 chamber CINE
4 chamber CINE STACK WHOLE HEART (TrueFISP, 0 spacing) - consider GRE to view ASD jet
Short axis stack ATRIA CINE (TrueFISP, 0 spacing)
RVOT CINE
PA CINE
Main PA Through Plane Phase Contrast (VENC 120)
Right PA Through Plane Phase Contrast (VENC 90)
Left PA Through Plane Phase Contrast (VENC 90)
Atrial Septum In Plane Phase Contrast (HLA, VENC 50)
Atrial Septum Through Plane Phase Contrast (VENC 50)
3 chamber CINE
Coronal LVOT CINE
Aorta STJ Through Plane Phase Contrast
-- CONTRAST--
Multislice first past perfusion (4 ch and atrial SA)
+/- Coronal isotropic high res TWIST angio
LV short axis stack CINE
TI scout
MDE segmented SAS
MDE segmented 2 chamber
MDE single shot 4 chamber
MDE single shot 3 chamber
3D MDE (Short Axis and 4 chamber)
NOTES:
4 chamber CINE STACK WHOLE HEART GRE
0 spacing
Purpose: to visualize turbulent jet through atrial septum
Short axis stack ATRIA CINE
0 spacing
perpendicular to atrial septum on 4 chamber view
3 point plan to track with angled atria

Atrial septum In Plane PC
Purpose: to visualize jet
Horizontal Long Axis view (~4 chamber)
Copy from best 4 Chamber CINE in the stack that shows the ASD
Atrial septum Through Plane PC
Purpose: calculate flow through ASD
prescribe parallel to interatrial septum, using 4 chamber STACK 3 point plan
+/- Isotropic (high res) Coronal TWIST angio
Purpose: look for anomalous pulmonary veins
First Past Perfusion
3 or 4 slices through ASD
-two best 4 chamber and two best short axis