Yamashita Y, Komohara Y, Takahashi M, et al. Abdominal helical CT: evaluation of optimal doses of intravenous contrast material--a prospective randomized study[J]. Radiology, 2000, 216(3): 718-723. PMID: 10966700
https://doi.org/10.1148/radiology.216.3.r00se26718