TY - RPRT TI - Attenuation correction in SPECT using consistency conditions for the exponential ray transform. AU - C Mennessier AU - F Noo AU - R Clackdoyle AU - G Bal AU - L Desbat PY - 1999 DO - 10.1088/0031-9155/44/10/309 UR - https://pubmed.ncbi.nlm.nih.gov/10533924/ ID - 10533924 ER -