In vivo mouse bioluminescence tomography with radionuclide-based imaging validation.

In vivo mouse bioluminescence tomography with radionuclide-based imaging validation.
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DOI:
10.1007/s11307-010-0332-y
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发表时间:
2011-02
影响因子:
3.1
通讯作者:
Chatziioannou, Arion F.
Chatziioannou, Arion F.
中科院分区:
医学3区
文献类型:
--
作者:
Lu, Yujie;Machado, Hidevaldo B.;Bao, Qinan;Stout, David;Herschman, Harvey;Chatziioannou, Arion F.

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生物发光成像,特别是平面生物发光成像,已广泛应用于体内临床前生物学研究。与平面成像技术相比,生物发光断层扫描 (BLT) 具有 3D 重建功能,因此有可能提供更准确的成像信息。在这项工作中,我们引入了一种基于正电子发射断层扫描 (PET) 放射性核素成像的策略来验证 BLT 结果。对表达生物发光报告基因的肿瘤异种移植小鼠模型进行 X 射线计算机断层扫描、PET、光谱分辨生物发光成像和手术切除。利用不同的光谱分辨测量数据,基于三阶简化球谐函数(SP3)近似和扩散近似(DA)获得BLT重建。获得相应的断层扫描图像以验证生物发光源重建。我们的结果显示了 PET 成像与 BLT 的其他验证方法相比的优势,并且与扩散近似相比,基于 SP3 近似的源定位精度得到了提高。
Bioluminescence imaging, especially planar bioluminescence imaging, has been extensively applied in in vivo preclinical biological research. Bioluminescence tomography (BLT) has the potential to provide more accurate imaging information due to its 3D reconstruction compared with its planar counterpart. In this work, we introduce a positron emission tomography (PET) radionuclide imaging-based strategy to validate the BLT results. X-ray computed tomography, PET, spectrally resolved bioluminescence imaging, and surgical excision were performed on a tumor xenograft mouse model expressing a bioluminescent reporter gene. With different spectrally resolved measured data, the BLT reconstructions were acquired based on the third-order simplified spherical harmonics (SP3) approximation and the diffusion approximation (DA). The corresponding tomographic images were obtained for validation of bioluminescence source reconstruction. Our results show the strength of PET imaging compared with other validation methods for BLT and improved source localization accuracy based on the SP3 approximation compared with the diffusion approximation.
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