High longitudinal relaxivity of ultra-small gadolinium oxide prepared by microsecond laser ablation in diethylene glycol
High longitudinal relaxivity of ultra-small gadolinium oxide prepared by microsecond laser ablation in diethylene glycol
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二甘醇中微秒激光烧蚀制备超小型氧化钆的高纵向弛豫率
DOI：
10.1063/1.4803035
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发表时间：
2013-04
影响因子：
3.2
通讯作者：
Dihu Chen
中科院分区：
文献类型：
--
作者：
Ningqi Luo;Xiumei Tian;Jun Xiao;Wenyong Hu;Chuan Yang;Li Li;Dihu Chen
Ultra-small gadolinium oxide (Gd2O3) can be used as T1-weighted Magnetic Resonance Imaging (MRI) contrast agent own to its high longitudinal relaxivity (r1) and has attracted intensive attention in these years. In this paper, ultra-small Gd2O3 nanoparticles of 3.8 nm in diameter have been successfully synthesized by a microsecond laser ablating a gadolinium (Gd) target in diethylene glycol (DEG). The growth inhibition effect induced by the large viscosity of DEG makes it possible to synthesize ultra-small Gd2O3 by laser ablation in DEG. The r1 value and T1-weighted MR images are measured by a 3.0 T MRI spectroscope. The results show these nanoparticles with a high r1 value of 9.76 s−1 mM−1 to be good MRI contrast agents. We propose an explanation for the high r1 value of ultra-small Gd2O3 by considering the decreasing factor (surface to volume ratio of the nanoparticles, S/V) and the increasing factor (water hydration number of the Gd3+ on Gd2O3 surface, q), which offer a new look into the relaxivity stud...
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影响因子：
3.7
作者：
Menendez-Manjon, Ana;Chichkov, Boris N.;Barcikowski, Stephan
通讯作者：
Barcikowski, Stephan
影响因子：
4
作者：
C. X. Wang;Peiqing Liu;H. Cui;G. Yang
通讯作者：
C. X. Wang;Peiqing Liu;H. Cui;G. Yang
尺寸可调的稀土掺杂 Gd2O3 纳米粒子的合成及其在光学和磁共振成像中的应用
影响因子：
--
作者：
Li, Wei;Chang, Xueling;Hu, Zhongbo;Zhao, Yuliang
通讯作者：
Zhao, Yuliang
影响因子：
--
作者：
Klasson, Anna;Ahren, Maria;Engstrom, Maria
通讯作者：
Engstrom, Maria
影响因子：
3.3
作者：
Mafuné, F;Kohno, J;Sawabe, H
通讯作者：
Sawabe, H