Discrimination from the final nomogram was measured at 0.77 with appropriate calibration.

One crucial step in developing effective NIRS-based methodologies is selecting an appropriate calibration set to construct models affording accurate predictions.

Magnetic resonance relaxation rate images were acquired and, based on an appropriate calibration of the gel, converted to absorbed dose distributions.

Results: Using the appropriate calibration factors to recover the volume variability, the error about the measurement repeatability and the activity variation was within 4%.