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The ECAT High Resolution Research Tomograph (HRRT) (CTI PET Systems, Knoxville, TN, USA) is a positron emission tomography (PET) scanner producing PET sinogram data with gaps. These gaps are areas of nonexisting sinogram data formed due to the physical limitations of the HRRT scanner detector block configuration. We present a simple non-interative and fast 1-D cubic convolution based interpolation...
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