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Fetal absorbed dose (mGy) calculated to the stage of gestation after i.v. injection of 99mTc-MAA and inhalation of 99mTc-Technegas in 127 pregnant women undergoing V/P SPECT for suspected PE
| Stage of gestation | Absorbed dose after 50 MBq 99mTc-MAA | Absorbed dose after 30 MBq 99mTc-Technegas | Absorbed dose after 120 MBq 99mTc-MAA |
|---|---|---|---|
| Early | 0.14 | 0.007 | 0.34 |
| 3 months | 0.20 | 0.007 | 0.48 |
| 6 months | 0.25 | 0.011 | 0.60 |
| 9 months | 0.20 | 0.014 | 0.48 |
