Is dosimetry more important than preparation (ie rhTSH versus THW) when treating thyroid cancer with radioactive iodine therapy?

Formal dosimetry to determine radiation dose is almost never done because it is so labor intensive and only can be done with THW and not rhTSH preparation with (-131 and not I-123). >99% of therapies are done based on the extent of disease and purpose, i.e., remnant ablation 30-50 mCi, adjuvant ther...