Patient Dose Assessment in Nuclear Medicine
The ultimate goal of any type of medical imaging procedure is to obtain the best image quality while delivering the smallest radiation dose possible to the patient. The best image quality though, does not necessarily give the correct diagnosis for a given medical condition at the lowest possible dose to the patient. Additionally the vast number of alternative diagnostic modalities available today and their rapid evolution make the choice of the most suitable modality for a particular medical condition very difficult, if dose to the patient is to be considered as a major constraint. It is therefore very important to know the dose received by the patient from the different modalities to arrive at the same diagnostic result. This is especially important in Nuclear Medicine where the different modalities produce images of the metabolic function of the human body and they are more likely to arrive at the same diagnostic outcome. The aim of this presentation is to give an overview of the peculiarities of the management of patient doses in Nuclear Medicine diagnostic procedures and to present a review of the methods used to estimate organ doses from the various radiopharmaceuticals used in diagnostic Nuclear Medicine procedures.
KeywordsNuclear medicine Organ dose Phantoms Radionuclides
The material used for this presentation, have been taken from the following sources:
•The SENTINEL European Project, www.dimond3.org
•IAEA, “Nuclear Medicine Resource Manual”, STI/PUB/1198, IAEA, Austria, 2006
•The IAEA Nuclear Medicine Educational and Training material available at (http://rpop.iaea.org/RPoP/RPoP/Content/index.htm)
•The EANM web site (www.eanm.org)
•The ESMI web site (www.e-smi.eu)
These are freely accessible and you are encouraged to study and use them.
- 1.Christy M. and Eckerman K.F. (1987) Specific absorbed fractions of energy at various ages from internal photon sources: I. Methods, ORNL/TM-8381/V1, Oak Ridge National Laboratory, Oak Ridge TN.Google Scholar
- 2.ICRU (1992), International Commission on Radiation Units and Measurements, Phantom and Computational Models in Therapy, Diagnosis and Protection, ICRU Report 48 (Bethesda, MD: ICRU).Google Scholar
- 3.Kramer, R., et al. (1982), The Calculation of Dose from External Photon Exposures Using Reference Human Phantoms and Monte Carlo Methods, Part 1: The Male (Adam) and Female (Eva) Adult Mathematical Phantoms, GSF-Bericht S-885.Google Scholar