Table 2. Imaging features differentiating cardiac myxomas from thrombi and other cardiac masses.

Inversion time on LGE (late gadolinium enhancement) is a specific parameter used in cardiac MRI to nullify the signal from healthy myocardium, thus enhancing the visibility of abnormal tissues. MI = myocardial infarction.

References:  [15-17]

Feature	Myxoma	Thrombus	Other tumors (e.g., fibroelastoma)
Location	Left atrium, typically at fossa ovalis	Left atrium (appendage), left ventricle (post-MI)	Valvular endocardium or ventricular outflow tract
Attachment	Narrow, often pedunculated	Broad-based	Narrow, with a pedicle
Mobility	Highly mobile, may prolapse through AV valve	Less mobile	Highly mobile
Shape	Lobulated, irregular	Smooth, more uniform	Small, often round or oval
Size	Variable, can be large (up to 15 cm)	Typically smaller, variable	Generally small (<1 cm)
Echotexture	Heterogeneous	Homogeneous	Homogeneous
Borders	Well-defined	Less well-defined	Well-defined
Functional Impact	Can obstruct AV valve during diastole	May impair ventricular function	Rarely obstructive, more likely embolic
T1 Signal	Heterogeneous intermediate	Homogeneous hypointense	Homogeneous low
T2 Signal	Heterogeneous hyperintense	Homogeneous hypointense	Homogeneous high
Gadolinium Enhancement	Heterogeneous, variable	Typically no enhancement, unless organized	Uniform enhancement
Inversion Time on LGE	200–300 ms	550–650 ms	N/A
Perfusion	Delayed perfusion, heterogeneous uptake	No perfusion	Homogeneous uptake
Calcification	Possible, seen in some cases	Rare, unless chronic	Rare
Hemorrhage	Possible, seen in some cases	Rare	Rare
Consistency	Soft, gelatinous	Firm, organized if chronic	Firm