Radiation Dose Estimates for Kr-81m Inhalation

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	Estimated Radiation Dose (mGy/MBq)
ORGAN	mGy/MBq	rad/mCi
Adrenals	4.3E-06	1.6E-05
Brain	1.7E-07	6.1E-07
Breasts	4.3E-06	1.6E-05
Gallbladder Wall	1.4E-06	5.1E-06
LLI Wall	7.4E-08	2.7E-07
Small Intestine	2.7E-07	1.0E-06
Stomach	2.1E-06	7.9E-06
ULI Wall	3.6E-07	1.3E-06
Heart Wall	7.8E-06	2.9E-05
Kidneys	1.2E-06	4.6E-06
Liver	3.6E-06	1.3E-05
Lungs	2.0E-04	7.4E-04
Muscle	1.7E-06	6.4E-06
Ovaries	1.3E-07	5.0E-07
Pancreas	3.0E-06	1.1E-05
Red Marrow	2.1E-06	7.7E-06
Bone Surfaces	2.3E-06	8.5E-06
Skin	7.6E-07	2.8E-06
Spleen	3.0E-06	1.1E-05
Testes	1.0E-08	3.8E-08
Thymus	5.0E-06	1.9E-05
Thyroid	1.6E-06	5.9E-06
Urinary Bladder Wall	3.6E-08	1.3E-07
Uterus	9.9E-08	3.7E-07
Effective Dose Equivalent	2.7E-05 mSv/MBq	9.8E-05 rem/mCi

Assumes that all activity inhaled decays in lungs (no patient or animal data used).
Estimate calculated using phantom of Cristy & Eckerman (Report ORNL/TM-8381/V1 & V7)