Tissue volume obtained with core needle biopsy based on inner diameter and throw distance
| Needle size (G) | Inner diameter (mm) | Cross-sectional area (mm2) | Core biopsy volume (mm3) | |
| 1 cm throw | 2 cm throw | |||
| 20 | 0.60 | 0.28 | 2.8 | 5.6 |
| 18 | 0.84 | 0.55 | 5.5 | 11.0 |
| 16 | 1.19 | 1.11 | 11.1 | 22.2 |
| 14 | 1.60 | 2.01 | 20.1 | 40.2 |
| 12 | 2.16 | 3.66 | 36.6 | 73.2 |