She has written and supervised nearly one hundred medical treatises, including Clinical Body CT Diagnosis, which was written in 1985 and was one of the two earliest CT monographs in China, and has become the main reference book for learning CT. 1994, on the basis of the original book, Prof. Li enriched the content and added new advances in the field, and wrote Clinical CT Diagnosis, which has been designated as a special counseling material for the National The book has been designated as the special tutorial material for the induction examination of large-scale medical equipment (CT) users, and has become a monograph with imaging power in the field of medical imaging, which has won the Second Prize of Scientific and Technological Progress of the Ministry of Health. In recent years, she has also edited Bone and Joint Trauma X-ray Diagnostics, and served as honorary editor-in-chief and wrote Bone and Joint Imaging and Diagnostic Imaging Atlas of Skeletal and Muscular Disorders.
In addition, the "Percentage Counting Method Bone Age Standard" created by Prof. Li Guozhen in 1979 has become the gold standard for the assessment of bone age of children and adolescents in China. This method is based on the different maturity of radial epiphysis, ulnar epiphysis, capitate, hook bone, triangular bone, 1st metacarpal epiphysis, 2nd metacarpal epiphysis, 2nd to 5th metacarpal epiphysis, proximal phalangeal epiphysis, middle phalangeal epiphysis, etc. 10 kinds of bones, which are divided into different phases after comparing, and are counted separately, and then by calculating the development index of the bone age of each bone, each phase, the average development index of the bone age for males 1~22 years old and females 1~20 years old is obtained. Prof. Li Guozhen is a diligent learner, and her experience of learning CT at 60, MR at 70 and computer at 80 has become a good story. At the Fifth National Magnetic **** Vibration Academic Conference in 2004, she also made a special report: new advances in imaging - "Molecular Imaging" and "Functional Imaging". Her spirit of relentless pursuit of knowledge and seriousness and responsibility for her work will always inspire young medical imaging workers to climb new scientific peaks.