This work concerns 2DSPECT imaging with uniform attenuation in the activity region. In this paper, it is shown that exact and stable reconstruction does not require the data to be known over 360 # as has been previously assumed. An angular range of 180 # is sufficient in parallel-beam geometry. A reconstruction formula which uses only data on a half-turn is provided with implementation details. Simulations are performed to support the mathematical result. 1.
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Noo et al. (2001) studied this question.
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