Table 2. Status of brachytherapy among the 28 brachytherapy centers in Korea.
| Variable | No. (%) |
|---|---|
| Equipment installation | |
| 1980-1989 | 1 (3.5) |
| 1990-1999 | 5 (17.9) |
| 2000-2005 | 8 (28.6) |
| 2006-2010 | 7 (25.0) |
| Later than 2011 | 6 (21.5) |
| Not reported | 1 (3.5) |
| Dose rate | |
| High-dose rate brachytherapy | 28 (100.0) |
| Low-dose rate brachytherapy | 0 |
| Radionuclides source | |
| 192Ir | 26 (92.8) |
| 60Co | 2 (7.2) |
| Source replacement intervals (mo) | |
| For 192Ir | |
| 3 | 1 (3.8) |
| >3, <6 | 12 (46.2) |
| 6 | 12 (46.2) |
| 10 | 1 (3.8) |
| For 60Co | |
| 84 | 2 (100.0) |
| No. of patients (in centers using 192Ir) | |
| During last 6 mo | |
| ≤10 | 6 (23.1) |
| 11-30 | 13 (50.0) |
| 31-50 | 4 (15.4) |
| 51-60 | 2 (7.7) |
| ≥ 61 | 1 (3.8) |
| During last 12 mo | |
| ≤10 | 2 (7.7) |
| 11-40 | 9 (34.6) |
| 41-60 | 6 (23.1) |
| 61-100 | 5 (19.3) |
| ≥100 | 3 (11.5) |
| Not reported | 1 (3.8) |
| No. of patients (in centers using 60Co) | |
| During last 6 mo | |
| 10 | 1 (50.0) |
| 60 | 1 (50.0) |
| During last 12 mo | |
| 16 | 1 (50.0) |
| 120 | 1 (50.0) |
| Target cancer of brachytherapy | |
| Gynecological cancer only | 22 (78.5) |
| Gynecological and other types of cancer | 6 (21.5) |
192Ir, iridium-192; 60Co, cobalt-60.