Radiation Dose Estimates for Tc-99m Pyrophosphate

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	Estimated Radiation Dose (mGy/MBq)
ORGAN	mGy/MBq	rad/mCi
Adrenals	3.3E-03	1.2E-02
Brain	2.6E-03	9.7E-03
Breasts	1.5E-03	5.6E-03
Gallbladder Wall	2.7E-03	1.0E-02
LLI Wall	3.9E-03	1.4E-02
Small Intestine	3.2E-03	1.2E-02
Stomach	2.4E-03	8.8E-03
ULI Wall	2.9E-03	1.1E-02
Heart Wall	2.5E-03	9.3E-03
Kidneys	6.4E-03	2.4E-02
Liver	2.4E-03	9.0E-03
Lungs	2.3E-03	8.7E-03
Muscle	2.6E-03	9.5E-03
Ovaries	3.8E-03	1.4E-02
Pancreas	2.9E-03	1.1E-02
Red Marrow	6.3E-03	2.3E-02
Bone Surfaces	3.8E-02	1.4E-01
Skin	1.6E-03	6.1E-03
Spleen	2.5E-03	9.3E-03
Testes	2.6E-03	9.8E-03
Thymus	2.2E-03	8.1E-03
Thyroid	2.5E-03	9.2E-03
Urinary Bladder Wall	2.4E-02	9.0E-02
Uterus	5.0E-03	1.9E-02
Effective Dose Equivalent	6.0E-03 mSv/MBq	2.2E-02 rem/mCi

Based on the model in MIRD Dose Estimate Report No. 13 (data gathered in human subjects), (J Nucl Med 30:1117- 1122, 1989) Dynamic bladder model with 4.8-hour voiding interval.