CARDIAC MASS (rev. 1017/19)
Indications: Cardiac mass, thrombus
SEQUENCES
Localizer
Axial bright blood chest
Axial dark blood chest
VIBE FS PRE
2 chamber CINE
Fake short axis CINE
4 chamber CINE STACK whole heart (0 spacing)
T1 without and with fat saturation
T2 double IR and triple IR
-- INJECT CONTRAST--
3 or 4 slice first pass perfusion through mass
VIBE FS POST
Short Axis Stack CINE through LV
3 chamber CINE
Aorta through plane Phase Contrast
TI scout
3D MDE Short Axis
3D MDE 4 chamber
MDE single shot SAS
MDE single shot 2 chamber
MDE single shot 4 chamber
MDE single shot 3 chamber
**optional MDE segmented
MDE with long TI (~800) through mass
NOTES
IMPORTANT! Cardiac mass exams are tailored to the specific clinical question.
Must find the actual mass first, then prepare planes through it.
Consider thin overlapping axial bright blood TrueFISP for localization especially if mass is small (2-3 mm slices, distance factor -50%)
4 chamber CINE STACK through the whole heart without spacing to localize the mass
Tissue characterization with T1 and T2 images, without and with fat saturation (prospectively triggered "capture")
Perfusion runs through the MASS, not LV myocardium
Can do 2 short axis, and 1 or 2 long axis. Whatever best images the mass.
Have patient hold breath according to when perfusion of mass is expected. i.e. if RA mass, hold breath early
Delayed enhancement (MDE) through LV and mass
Delayed enhancement (MDE) through mass with long inversion time (TI 800-1000).
* This allows all signal to recover and differentiates a true mass from thrombus
VIBE FS PRE and POST contrast