ALB and neoplasm: In addition to the limitations recently reported regarding the predictive value of the dosimetry performed on the 99mTc-macroaggregated albumin (MAA) single-photon emission computed tomography (SPECT/CT) with regard to the actual dose delivered to the tumor, this emphasizes the need for further work for harmonizing the tumor dosimetry, in order to eventually optimize tumor response [15, 23–25].