Atrial Septal Defect (ASD) Protocol

1) 2, 3, 4 CH, SA stack for Ejection Fraction (gated fiesta). Take stack from entire to entire left ventricle.

2) DIR, 4 mm thick, zero gap, T1 weight in short axis orientation , along the interatrial septum.

3) Fast cine FSPGR short axis (single slice) and 4 chamber (single slice) at the ASD site if visible.

4) Qp/QS with background correction with phase contrast mri

5) MR echo over atrium and ventricle with 10 cc multihance, have patient valsalva and hold their breath as long as they can , then breath shallowly.

6) Give the rest of contrast up to 1.5 dose.

7) Thin section LAVA of the chest, breath held, 3 planes.

8) Early gad enhancment  (TI 600) over graphic presciption of #2

9) Delayed images with 2, 3, 4, CH, and SA choose proper TI to null myocardium.

10) Do phantoms before ending exam.

MR 13105911

MR 13105911