Absorbed Dose Estimates to Embryo/Fetus Per Unit Activity of Different Radiotracers Administered to Pregnant Mother
| Gestation | ||||
| Radiotracer | Early pregnancy (mGy/MBq) | 3 mo (mGy/MBq) | 6 mo (mGy/MBq) | 9 mo (mGy/MBq) |
| 11C-acetate | 1.54E−03 | 2.12E−03 | 2.05E−03 | 1.94E−03 |
| 11C-amino acids | 4.71E−03 | 4.25E−03 | 3.51E−03 | 3.19E−03 |
| 11C brain receptor substances | 6.69E−03 | 5.11E−03 | 3.61E−03 | 3.21E−03 |
| 11C-methionine | 1.14E−02 | 7.59E−03 | 4.01E−03 | 3.40E−03 |
| 11C (realistic maximum model) | 2.06E−02 | 1.22E−02 | 5.38E−03 | 4.31E−03 |
| [Methyl-11C]thymidine | 2.07E−03 | 2.81E−03 | 2.75E−03 | 2.63E−03 |
| 11C-thymidine | 2.84E−03 | 2.74E−03 | 2.50E−03 | 2.31E−03 |
| 11C-SA4503 | 2.63E−03 | 3.26E−03 | 3.03E−03 | 2.84E−03 |
| 11C-MPDX | 3.77E−03 | 3.72E−03 | 3.29E−03 | 3.04E−03 |
| 11C-TMSX | 3.67E−03 | 3.67E−03 | 3.30E−03 | 3.05E−03 |
| 11C-CHIBA-1001 | 3.34E−03 | 4.01E−03 | 3.34E−03 | 3.09E−03 |
| 11C-4DST | 5.23E−03 | 4.33E−03 | 3.46E−03 | 3.15E−03 |
| 15O-water | 4.54E−04 | 4.92E−04 | 4.50E−04 | 4.15E−04 |
| 18F amino acids | 2.34E−02 | 1.97E−02 | 1.50E−02 | 1.36E−02 |
| 18F brain receptor substances | 2.67E−02 | 2.12E−02 | 1.51E−02 | 1.37E−02 |
| 18F-FDG | 3.05E−02 | 2.27E−02 | 1.50E−02 | 1.33E−02 |
| 18F-l-DOPA | 5.31E−02 | 3.36E−02 | 1.70E−02 | 1.42E−02 |
| 18F-FBPA | 4.56E−02 | 2.98E−02 | 1.76E−02 | 1.52E−02 |
| 18F-FDOPA | 5.91E−02 | 3.79E−02 | 2.00E−02 | 1.68E−02 |
| 68Ga-EDTA | 4.91E−02 | 3.13E−02 | 1.77E−02 | 1.50E−02 |
| 68Ga-DOTANOC | 1.84E−02 | 1.52E−02 | 1.18E−02 | 1.06E−02 |
11C-SA4503 = 11C-1-(3,4-dimethoxyphenethyl)-4-(3-phenylprophyl)piperazine; 11C-MPDX = 11C-8-dicyclopropylmethyl-1-methyl-3-propylxanthine; 11C-TMSX = 11C-(E)-8-(3,4,5-trimethoxystyryl)-1,3,7-trimethylxanthine; 11C-CHIBA-1001 = 4-11C-methylphenyl-1,4-diazabicyclo[3.2.2.]nonane-4-carboxylate; 11C-4DST = 11C-4′-thiothymidine; 18F-l-DOPA = 6-18F-fluoro-l-DOPA; 18F-FBPA = 4-borono-2-18F-fluoro-l-phenylalanine; 18F-FDOPA = 6-18F-fluorodopamine; 68Ga-EDTA = 68Ga-ethylenediaminetetraacetic acid.