HIGHLIGHTS
SUMMARY
There are a number of challenges that degrade image_quality and quantification in 90Y SPECT images. Clinical protocols are based on previous studies which have shown that image_quality can be improved by limiting the energy window and using a medium energy collimator. The authors therefore extend the HKEM algorithm to allow the iterative part of the kernel to be frozen at a chosen iteration number so that the kernel is based on an image with lower noise. Fig 9 shows the images reconstructed with the vendor, OSEM, OSEMPSF, HKEM and FHKEM frozen at the 72nd . . .
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