PT - JOURNAL ARTICLE AU - Razifar, Pasha AU - Engler, Henry AU - Ringheim, Anna AU - Estrada, Sergio AU - Wall, Anders AU - Långström, Bengt TI - An Automated Method for Delineating a Reference Region Using Masked Volumewise Principal-Component Analysis in <sup>11</sup>C-PIB PET AID - 10.2967/jnmt.108.054296 DP - 2009 Feb 17 TA - Journal of Nuclear Medicine Technology 4099 - http://tech.snmjournals.org/content/early/2009/02/17/jnmt.108.054296.short 4100 - http://tech.snmjournals.org/content/early/2009/02/17/jnmt.108.054296.full