Actual (feff) and Nominal (fnom) Focal Spot Sizes necessary to achieve an Object Plan Spatial Resolution of 12.5 cycles/mm at the Chest Wall
SID (cm) | Magnification | feff (mm) | fnom (mm) |
80 | 1.07 | 1.2 | 0.6 |
65 | 1.08 | 1.1 | 0.5 |
50 | 1.11 | 0.85 | 0.4 |
-- | 1.5 | 0.23 | 0.15 |
-- | 2.0 | 0.15 | 0.10 |
Miss. Code. tit. 15, pt. 21, subpt. 78, ch. 1, subch. 6, app 15-21-78-1-6-D