Table 2.
Analysis of radiation-related and patient-related factors in patients with and without RT-induced SIC after treatment
| Factor | RT-induced SIC (+) | RT-induced SIC (−) |
|---|---|---|
| LV V10 Gy (%) | 45.6 ± 13.6 | 30.9 ± 14.1 |
| LV V20 Gy (%) | 39.0 ± 12.9 | 24.9 ± 12.9 |
| LV V30 Gy (%) | 34.2 ± 12.6 | 20.6 ± 11.9 |
| LV V40 Gy (%) | 20.1 ± 14.4 | 12.9 ± 7.9 |
| LV V50 Gy (%) | 3.5 ± 4.7 | 5.3 ± 8.3 |
| LV V60 Gy (%) | 0.7 ± 1.6 | 2.3 ± 4.5 |
| LV mean dose (Gy) | 18.6 ± 5.5 | 13.5 ± 6.4 |
| Age at RT (r) | 63.8 ± 4.1 | 58.5 ± 6.9 |
| Sex (n) | ||
| Male | 5 | 5 |
| Female | 8 | 1 |
| ECOG performance status (n) | ||
| 0 | 9 | 6 |
| 1 | 4 | 0 |
| Hypertension (n) | ||
| Yes | 4 | 0 |
| No | 9 | 6 |
| Hyperlipidemia (n) | ||
| Yes | 3 | 3 |
| No | 10 | 3 |
| Habit of smoking (n) | ||
| Yes | 7 | 5 |
| No | 6 | 1 |
| Body mass index (kg/m2) | 21.0 ± 3.4 | 20.9 ± 2.4 |
| eGFR (mL/min/1.73 m2) | 74.9±12.1 | 83.6±9.7 |
| Coronary artery calcification (n) | ||
| Yes | 8 | 3 |
| No | 5 | 3 |
Abbreviations: ECOG = Eastern Cooperative Oncology Group; eGFR = estimated glomerular filtration rate; LV V10 Gy = percentage of the volume receiving 10 Gy in the left ventricle; RT = radiation therapy; SIC = signal intensity change.