From: Accelerated partial breast irradiation: the case for current use
 |  |  |  | Local recurrence | |
---|---|---|---|---|---|
Trial | Technique | Selection criteria | Quality assurance | Whole breast | Partial breast |
Christies Hospital [25] | Electron beam quadrant | No margin, stage, or histologic criteria | No image guidance or verification of coverage | 8% | 34% |
Guys Hospital [26] | Cs137 MDR, 45 Gy | Positive margins, nodes, EIC | Dose, targeting, and volume issues | NA | 20% |
London Regional [28] | Ir192 HDR | Positive nodes, EIC | Small volume implants | NA | 16% |