Table 1 MRI Imaging Characteristics of LNMAC
MRI SEQUENCE USED TO ASSESS LNMAC | INTERIOR CHARACTERISTIC OF MASS BY MRI | PERIPHERAL RING ENHANCEMENT |
|---|---|---|
PHASE SENSITIVE/MAGNITUDE RECONSTRUCTION INVERSION RECOVERY (PSIR) WITH MYOCARDIAL NULLING | HYPOINTENSE‡ ‡signal intensity of central part of mass compared with surrounding myocardium | +++ (marked PERIPHERAL LATE GADOLINIUM ENHANCEMENT) |
HASTE (T2 WEIGHTED SINGLE SHOT FSE) | HYPOINTENSE‡ WITH HETEROGENEOUS INTERIOR COMPONENTS | +++ (marked PERIPHERAL LATE GADOLINIUM ENHANCEMENT) |
IR TURBOFLASH (ULTRA FAST GRADIENT LOW ANGLE SHOT T1 WEIGHTED) | HYPOINTENSE‡ WITH HETEROGENEOUS INTERIOR COMPONENTS | +++ (marked PERIPHERAL LATE GADOLINIUM ENHANCEMENT) |
GRE (SPOILED GRADIENT ECHO) | HYPERINTENSE CENTER AND HYPOINTENSE RIM‡ | NONE |
TRUE FISP (STEADY STATE GRE MIXED T1 AND T2 WEIGHTING) | HYPOINTENSE‡ | NONE |
INVERSION RECOVERY TRUE FISP (SINGLE SHOT NON-BREATH HOLD TECHNIQUE | HYPOINTENSE‡ | ++ |
STIR (SHORT TAU IR OR TRIPLE INVERSION RECOVERY) | HYPOINTENSE‡ | ++ |
T2 TURBO SPIN (DARK BLOOD) ECHO (TSE) | HYPOINTENSE‡ | ++ |
T1 TURBO SPIN ECHO FAT SAT POST CONTRAST DARK BLOOD (TSE) | HYPOINTENSE‡ WITH HETEROGENEOUS INTERIOR COMPONENTS | NONE |