FOLH1 and neoplasm: In addition to the 68Ga-PSMA PET/CT routinely carried out to assess tumour PSMA expression 177Lu-PSMA prior to radioligand therapy, 99mTc-Mercaptoacetyltriglycine (MAG3) renal scintigraphy is also performed to assess baseline kidney function and to exclude renal obstruction [2].