TY - RPRT TI - Indexing artefacts using a tertiary collimator and a method to avoid them. AU - P Cooper AU - R I MacKay AU - P C Williams PY - 2002 DO - 10.1088/0031-9155/47/13/402 UR - https://pubmed.ncbi.nlm.nih.gov/12164593/ ID - 12164593 ER -