TY - RPRT TI - Preliminary experience using an optimized three-point transformation algorithm for spatial registration of coordinate systems: a method of noninvasive localization using frame-based stereotactic guidance systems. AU - M P Heilbrun AU - S Koehler AU - P MacDonald AU - V Siemionow AU - W Peters PY - 1994 DO - 10.3171/jns.1994.81.5.0676 UR - https://pubmed.ncbi.nlm.nih.gov/7931613/ ID - 7931613 ER -