title: Routine use of precontrast and delayed acquisitions in abdominal CT: time for change.
abstract: OBJECTIVE
  With major efforts being made to reduce radiation exposure in CT, one area of practice that requires additional improvement is limiting the number of acquisitions for body CT imaging. This review article defines best MDCT practice in terms of tailored abdominal CT protocols, designed to maximize lesion detection while limiting radiation exposure.
  
  
  CONCLUSIONS
  The literature defines optimal acquisitions for a range of abdominal CT indications, with precontrast and delayed acquisitions being least commonly indicated.
authors.affiliation: Department of Radiology, Johns Hopkins Hospital, 601 N. Caroline Street, Room 3140D, Baltimore, MD 21287, USA. Pjohnso5@jhmi.edu
authors.forename: Pamela T
authors.initials: PT
authors.lastname: Johnson
authors.forename: Elliot K
authors.initials: EK
authors.lastname: Fishman
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging; D018249:Adenoma, Oxyphilic / Q000000981:diagnostic imaging; D000310:Adrenal Gland Neoplasms / Q000000981:diagnostic imaging; D017544:Aortic Aneurysm, Abdominal / Q000000981:diagnostic imaging; D006528:Carcinoma, Hepatocellular / Q000000981:diagnostic imaging; D003287:Contrast Media / Q000008:administration & dosage; D004067:Digestive System Neoplasms / Q000000981:diagnostic imaging*; D006801:Humans; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging; D008113:Liver Neoplasms / Q000000981:diagnostic imaging; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000379:methods*; D011860:Radiography, Abdominal / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*
chemical_list: D003287:Contrast Media