TY  - RPRT
TI  - Validation of the central-ray approximation for attenuated depth-dependent convolution in quantitative SPECT reconstruction.
AU  - Z Liang
AU  - J Cheng
AU  - J Ye
PY  - 1997
DO  - 10.1088/0031-9155/42/2/015
UR  - https://pubmed.ncbi.nlm.nih.gov/9044425/
ID  - 9044425
ER  -