Abstract
Radiation dose itself cannot be imaged non-invasively. However, medical imaging can non-invasively provide information so that estimates of radiation dose can be calculated. If one is using traditional techniques based on Medical Internal Radiation Dose methods, one may employ a standard reference man for a macrodose calculation. The accuracy of a single-photon emission computed tomography reconstruction plays an important role in a three-dimensional dosimetry calculation. The most straightforward way to obtain the time series of information needed for dosimetry is to image the patient repeatedly over time by conjugate views or by a tomographic method. With tomographic imaging without registration of image sets, target segmentation in the image space is needed. Whole body imaging for the determination of the amount of activity in the body, without quantitative description of where, is of interest for the estimation of whole-body radiation dose.
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