Advanced external beam radiation therapy treatments such as intensity modulated radiation therapy and stereotactic radiosurgery are reliant on precise characterization of small radiation fields. There are numerous physical effects interplaying between the radiation field, the medium, and the detector that influence and challenge the accuracy of dosimetry in non-equilibrium environments. Standard Imaging's Exradin W2 scintillation detector was recently introduced to the field and aims to increase accuracy of small field measurements. The W2 detector was determined to be a viable detector for small-field dosimetry if anisotropy is accounted for.