PET CMR$_{glc}$映射和$^{1}$H MRS显示BDL大鼠葡萄糖摄取和神经代谢谱的改变。
摘要:通过稳态PET图像和由图像导出的输入函数,我们提出了一种新的临床前$^{18}$F-FDG PET方法,用于计算脑区域葡萄糖代谢率的定量3D图。当比较具有不同生理学的动物群体时,这种定量方法展现出其优势,例如HE动物。 PET CMR$ _ {glc} $图像与一本图谱进行了注册,而海马和小脑的平均CMR$ _ {glc} $与相应的局部化$ ^ {1} $H MR波谱学数据相关联。这项研究首次提供了有关C型HE大鼠模型中的脑葡萄糖摄取和神经代谢异常的局部和定量信息。在海马和小脑中观察到脑葡萄糖摄取率减少两倍,同时脑谷氨酸增加和主要渗透剂减少。这些新发现对于了解HE的能量代谢病理生理学起到了重要的推动作用。
作者:Jessie Mosso (1,2 and 3), Ting Yin (1 and 2), Carole Poitry-Yamate (1), Dunja Simicic (1,2 and 3), Mario Lepore (1 and 2), Val''erie A. McLin (4), Olivier Braissant (5), Cristina Cudalbu (1 and 2), Bernard Lanz (3) ((1) CIBM Center for Biomedical Imaging, Switzerland, (2) Animal Imaging and Technology (AIT), EPFL, Lausanne, Switzerland, (3) Laboratory for functional and metabolic imaging (LIFMET), EPFL, Lausanne, Switzerland, (4) Swiss Pediatric Liver Center, Department of Pediatrics, Gynecology and Obstetrics, University Hospitals Geneva, and University of Geneva, Geneva, Switzerland, (5) Service of Clinical Chemistry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland)
论文ID:2112.12113
分类:Medical Physics
分类简称:physics.med-ph
提交时间:2023-02-13