Radiation Dose Estimates
for Tc-99m DMSA
| |
Estimated
Radiation Dose |
| ORGAN |
mGy/MBq |
rad/mCi |
| |
|
|
| Adrenals |
1.2E-02 |
4.3E-02 |
| Brain |
1.3E-03 |
4.9E-03 |
| Breasts |
1.4E-03 |
5.0E-03 |
| Gallbladder Wall |
7.5E-03 |
2.8E-02 |
| LLI Wall |
3.3E-03 |
1.2E-02 |
| Small Intestine |
5.0E-03 |
1.9E-02 |
| Stomach |
5.2E-03 |
1.9E-02 |
| ULI Wall |
4.9E-03 |
1.8E-02 |
| Heart Wall |
2.9E-03 |
1.1E-02 |
| Kidneys |
1.9E-01 |
7.0E-01 |
| Liver |
5.7E-03 |
2.1E-02 |
| Lungs |
2.4E-03 |
9.0E-03 |
| Muscle |
2.9E-03 |
1.1E-02 |
| Ovaries |
3.5E-03 |
1.3E-02 |
| Pancreas |
8.7E-03 |
3.2E-02 |
| Red Marrow |
4.1E-03 |
1.5E-02 |
| Bone Surfaces |
5.0E-03 |
1.9E-02 |
| Skin |
1.6E-03 |
5.8E-03 |
| Spleen |
1.1E-02 |
4.0E-02 |
| Testes |
1.8E-03 |
6.8E-03 |
| Thymus |
1.8E-03 |
6.6E-03 |
| Thyroid |
1.6E-03 |
6.0E-03 |
| Urinary Bladder Wall |
1.5E-02 |
5.4E-02 |
| Uterus |
4.2E-03 |
1.6E-02 |
| |
|
|
| Effective Dose Equivalent |
1.6E-02 mSv/MBq |
6.0E-02 rem/mCi |
Based on data gathered in human subjects by Arnold et al.,
J Nucl Med 16:357-367, 1975. Assumed distribution and retention:
Total body 80% Tb = 72 hr 20% Tb = 1.6
hr
Kidneys 44% Tb = ñ
Urinary bladder receives whole body clearance: 44.8%, Tb = 72
hr, 11.2%,
Tb = 1.6 hr. Bladder voiding interval 4.8 hours.
Estimate calculated using phantom of Cristy & Eckerman
(Report ORNL/TM-8381/V1 & V7)