TY - JOUR T1 - Precision Nanomedicine Using Dual PET and MR Temperature Imaging–Guided Photothermal Therapy JF - Journal of Nuclear Medicine JO - J Nucl Med SP - 1778 LP - 1783 DO - 10.2967/jnumed.116.172775 VL - 57 IS - 11 AU - Min Zhou AU - Marites Melancon AU - R. Jason Stafford AU - Junjie Li AU - Alpa M. Nick AU - Mei Tian AU - Anil K. Sood AU - Chun Li Y1 - 2016/11/01 UR - http://jnm.snmjournals.org/content/57/11/1778.abstract N2 - Imaging-based techniques have enabled the direct integration of noninvasive imaging with minimally invasive interventions such as photothermal therapy (PTT) to improve the precision of treatment. Methods: We investigated the feasibility of PTT for ovarian cancer under the guidance of PET and MR temperature imaging using copper sulfide nanoparticles (CuS NPs). The tumor distribution of the CuS NPs after systemic administration was assessed using highly sensitive, quantifiable PET imaging. Two wavelengths of near-infrared (NIR) lasers—808 and 980 nm—were tested for PTT using noninvasive MR temperature imaging real-time monitoring. Results: The in vivo studies revealed that the 980-nm NIR laser had better photothermal effects than the 808-nm NIR laser. These results were in accord with the histologic findings. In vivo PTT using CuS NPs combined with 980-nm laser irradiation achieved significant tumor ablation compared with no treatment control in both subcutaneous (P = 0.007) and orthotopic (P < 0.001) models of ovarian cancer with regard to the percentage of necrotic damage. Conclusion: Our results indicate that real-time monitoring of the accuracy of PTT is a promising approach for future clinical translation of this emerging thermal ablation technique. ER -