IMAGING SCIENCE AND PHOTOCHEMISTRY ›› 2021, Vol. 39 ›› Issue (6): 781-789.DOI: 10.7517/issn.1674-0475.210409

• Review and Articles • Previous Articles     Next Articles

Recent Progress in Bio-responsive Gadolinium-based MRI Contrast Agent

LIU Yanyue, WU Yongjie, SUN Kang, TAO Ke   

  1. The State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
  • Received:2021-04-20 Online:2021-11-15 Published:2021-11-11

Abstract: The gadolinium-based contrast agent (GBCA), the most common contrast agent in clinical magnetic resonance (MR) imaging, lacks specificity when detecting diseases and thus makes it difficult to distinguish lesions. Many recent researches have focused on the development of bio-responsive contrast agents which can vary the intensity of MR signals with changes in physiological or pathological environment. This article reviews three current design concepts of bio-responsive GBCAs, expounds the specific methods of promoting relaxation rate and its application in imaging diagnosis, makes a prospect for the development of bio-responsive GBCA, and points out the problems to be solved in the conversion process for clinical application.

Key words: magnetic resonance imaging (MRI), gadolinium-based contrast agent, bio-responsive, relaxation rate, disease diagnosis