Fig. 6From: Fast quantitative reconstruction with focusing collimators for liver SPECTProjections of the XCAT liver and lung made with the fast Monte Carlo projector, with Poisson noise added to emulate a detector measurement of 20 s. The number of counts in the liver projections is 56 k, 104 k, 75 k, and 90 k, respectively. For the lung, these are 3458, 6376, 5406, and 5144, respectivelyBack to article page