Attenuation correction for small animal SPECT imaging using x-ray CT data.

@article{Hwang2005AttenuationCF,
  title={Attenuation correction for small animal SPECT imaging using x-ray CT data.},
  author={Andrew B Hwang and Bruce H. Hasegawa},
  journal={Medical physics},
  year={2005},
  volume={32 9},
  pages={2799-804}
}
Photon attenuation in small animal nuclear medicine scans can be significant when using isotopes that emit lower energy photons such as iodine-125. We have developed a method to use microCT data to perform attenuation corrected small animal single-photon emission computed tomography (SPECT). A microCT calibration phantom was first imaged, and the resulting calibration curve was used to convert microCT image values to linear attenuation coefficient values that were then used in an iterative… CONTINUE READING