This article described the principle of the DTI and its usage in diagnosis of brain tumors,providing information before the operation of the brain tumor,and in diagnosis of the callosal agenesis.

• 本文就扩散张量成像技术的原理、扩散张量成像对颅脑肿瘤术前计划制定,以及对颅脑肿瘤、先天性胼胝体发育不全等多种疾病诊断价值的研究进展做一综述。