TY  - RPRT
TI  - A three-dimensional second-derivative surface-detection algorithm for volume determination on SPECT images.
AU  - P G Hillel
AU  - D L Hastings
PY  - 1993
DO  - 10.1088/0031-9155/38/5/002
UR  - https://pubmed.ncbi.nlm.nih.gov/8321888/
ID  - 8321888
ER  -