Single tumor cell uptake and dosimetry of technetium-99m Fab ' anti-CD22 in low-grade B-cell lymphoma
BACKGROUND. A patient with follicular lymphoma was investigated with 0.5 mg Fab' anti-CD22 labeled with 1100 MBq technetium-99m (Tc-99m). A computed tomography scan performed a week later revealed regression. This unexpected response prompted an investigation of single cell dosimetry of low-energy electron emitters. METHODS. Another patient with low-grade, unclassifiable B-cell lymphoma with a low