Abstract

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Author(s):: LEI Gege1; 2; ZHANG Guangfeng1; JIA Huihui3; WU Jizhi3; CHANG Yan2; YI Peiwei4; SHENG Mao3; YANG Xiaodong2; 1.School of Electronic and Optical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China 2. Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China 3. Department of Radiology, Childrens Hospital of Soochow University, Suzhou 215025, China 4. School of Biomedical Engineering, Southern Medical University, Guangzhou 510515, China

Keywords:: short T2 tissues quantitative magnetic imaging pulse sequence contrast enhancement review

Abstract:: The conventional magnetic resonance imaging (MRI) has a high soft tissue contrast but a poor ability to distinguish short T2 tissues (<10 ms) such as bone, joint, cartilage and tendon. The high-quality images of the short T2 tissues can be obtained by enhancing the image contrast of short T2 tissue (using magic angle effect or injecting contrast agent), developing special short T2 tissue imaging technologies (variable echo time imaging, ultrashort echo time imaging and zero echo time imaging) and suppressing the surrounding long T2 tissues. In recent years, quantitative magnetic resonance imaging technology has been applied to the clinical diagnosis of short T2 tissue lesions because it can accurately reflect the characteristics of biochemical parameters related to the lesions. Herein the conventional magnetic resonance imaging of short T2 tissues is reviewed from 3 aspects, namely enhancing short T2 tissue contrast, shortening the echo time of sequence and suppressing long T2 tissues. Furthermore, the quantitative magnetic resonance imaging of short T2 tissues is systematically analyzed and its prospects are discussed.