Patient Characteristics
| Patient no. | Age (y) | Sex | Location | Size (mL) | SUVmax | T1w | T2w | CE | Cine MR imaging | PE | MR imaging diagnosis | Diagnosis | Other findings | Related information |
| 1 | 70 | F | SVC and RA (intracavity) | 33.2 | 9.6 | — | ↑ | + | Benign | Malignant | Metastasis (breast cancer) | Mediastinal lymph node metastases | Breast cancer (1988) | |
| 2 | 83 | F | Pericardial masses | 184.8 | 20.7 | ↑ | ↑ | + | Malignant | + | Malignant | Metastases (thymic carcinoma) | ||
| 3 | 39 | F | LV (septum and lateral wall) | 23.1 | 5.2 | ↑ | ↑ | + | Malignant | Malignant | Metastases (angiosarcoma) | Angiosarcoma of the right limb | ||
| 4 | 57 | F | LA (intracavity) | 29.2 | 13.6 | — | ↑ | + | Malignant | + | Malignant | Non–small cell lung cancer | Infiltration via pulmonary vein | |
| 5 | 20 | M | Massive pericardial infiltration | 499 | 14.6 | — | ↑ | + | Malignant | + | Malignant | Ewing sarcoma (local relapse) | Cardiac Ewing sarcoma, local restaging after surgery | |
| 6 | 36 | F | RA and RV (lateral wall) | 55.3 | 21.3 | — | ↑ | + | Malignant | + | Malignant | Angiosarcoma (local relapse) | Pulmonary metastases | Cardiac angiosarcoma, local restaging after surgery |
| 7 | 78 | M | RA and RV (lateral wall) | 155.9 | 7.6 | — | ↑ | + | Malignant | + | Malignant | Burkitt lymphoma | Pleural effusion | |
| 8 | 66 | F | RA (lateral wall) | 18.1 | 2.2 | ↑ | ↑ | + | Malignant | Malignant | Scar tissue after surgery of cardiac angiosarcoma | Local restaging, no histology (confirmed via follow-up MR imaging after 4 mo) | ||
| 9 | 21 | M | RA and IVC (wall) | 5.23 | 5.2 | — | — | Benign | Benign | Patch tissue after surgery of cardiac fibrosarcoma | Thoracic wall metastasis | Local restaging, no histology (confirmed via follow-up MR imaging after 3 mo) | ||
| 10 | 65 | F | RA (intracavity, attached to septum) | 5.8 | 1.2 | — | — | + | Benign | Benign | Myxoma | |||
| 11 | 50 | F | LA (intracavity, attached to septum) | 3 | 1.8 | — | ↑ | + | Benign | Benign | Myxoma | |||
| 12 | 83 | F | LA (intracavity, attached to septum) | 12.8 | 3 | ↑ | ↑ | + | Benign | Benign | Myxoma | |||
| 13 | 63 | F | RA (intracavity) | 84.5 | 3.8 | ↑ | ↓ | + | Benign | Benign | Myxoma | |||
| 14 | 67 | F | Aortal valve (intracavity) | 0.5 | 2.1 | — | — | + | Benign | Benign | Fibroelastoma | Severe heart failure | ||
| 15 | 50 | M | LA (attached to mitral valve) | 36.5 | 1.6 | — | ↓ | Benign | Benign | CCMA | No histology | |||
| 16 | 45 | M | LA (attached to mitral valve) | 6.1 | 2.8 | ↑ | — | + | Benign | + | Benign | CCMA | LV hypertrophy | No histology |
| 17 | 72 | M | LA (attached to mitral valve) | 21.5 | 1.5 | ↑ | — | Benign | Benign | CCMA | No histology | |||
| 18 | 57 | F | RVOT | 10.3 | 1.3 | — | ↑ | Benign | + | Benign | Thrombus | Mediastinal lymph node metastases | Anal carcinoma | |
| 19 | 78 | F | LA (intracavity, attached superior wall) | 22.1 | 1 | — | ↑ | Benign | Benign | Thrombus | ||||
| 20 | 50 | M | Ascending aorta (attached to wall, floating) | 0.6 | 2 | ↑ | ↑ | Benign | Benign | Thrombus |
CE = contrast enhancement; PE = pericardial effusion; SVC = superior vena cava; RA = right atrium; — = isointense; ↑ = hyperintense; + = feature present; LV = left ventricle; LA = left atrium; RV = right ventricle; IVC = inferior vena cava; ↓ = hypointense; CCMA = caseous calcification of mitral annulus; RVOT = right ventricular outflow tract.