upconversion luminescence

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RGD Peptide–Conjugated Multimodal NaGdF₄:Yb³⁺/Er³⁺ Nanophosphors for Upconversion Luminescence, MR, and PET Imaging of Tumor Angiogenesis
Junghan Lee, Tae Sup Lee, Jiyoung Ryu, Sukmin Hong, Moonsik Kang, Kangbin Im, Joo Hyun Kang, Sang Moo Lim, Sun Park and Rita Song

Journal of Nuclear Medicine January 1, 2013, 54 (1) 96-103; DOI: https://doi.org/10.2967/jnumed.112.108043