The Crosstalk Removal tool is used to remove crosstalk photons in dual-isotope SPECT images. The limits in energy resolution inherent to SPECT imaging result in some overlap between the energy spectra of isotopes with relatively similar peak energies. For example, in dual-isotope I-123 and Tc-99m imaging, some I-123 photons will spill over into the Tc-99m window and vice versa. The Crosstalk Removal tool is applied to projection data to remove these “spill over” photons or crosstalk.

Getting There

The Crosstalk Removal tool is accessible by going to Advanced Modules>NucMed>NanoSPECT.

Crosstalk Removal
Crosstalk Removal

Function

The Crosstalk Removal tool requires users to enter the scaling factor of both the Input and Reference images, as well as the Full-Width Half-Maximum (FWHM) of the smoothing kernel in order to remove crosstalk photons.

Crosstalk Removal
Crosstalk Removal