title: Contrast use at low field: a review.
abstract: The use of gadolinium-based contrast agents for magnetic resonance imaging at low fields (</=0.5 T) is reviewed. Magnetic resonance studies on low-field units represent an important subset of examinations performed in the United States. Although many fundamental principles of contrast usage apply both to high-field and low-field examinations, contrast enhancement is field dependent. Although diagnostic yield is not equivalent at all field strengths, contrast effect on low-field examinations at double doses (0.2 mmol/kg) of intravenous contrast approaches that on high-field (1.5 T) examinations at standard dose (0.1 mmol/kg). It is recommended that radiologists operating low-field units routinely employ what would otherwise be considered a double dose of a gadolinium chelate for neuroradiologic examinations.
authors: Department of Radiology, Scott and White Clinic and Hospital, Texas A&M University Health Science Center, Temple, Texas, USA.
authors: Nilesh K
authors: NK
authors: Desai
authors: Val M
authors: VM
authors: Runge
mesh_terms: D001932:Brain Neoplasms / Q000175:diagnosis; D003287:Contrast Media / Q000008:administration & dosage*; D005682:Gadolinium; D019786:Gadolinium DTPA / Q000008:administration & dosage; D006571:Heterocyclic Compounds / Q000008:administration & dosage; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis; D008279:Magnetic Resonance Imaging / Q000379:methods*; D009103:Multiple Sclerosis / Q000175:diagnosis; D009942:Organometallic Compounds / Q000008:administration & dosage
chemical_list: D003287:Contrast Media; D006571:Heterocyclic Compounds; D009942:Organometallic Compounds; C062402:gadoteridol; C064925:gadodiamide; D005682:Gadolinium; D019786:Gadolinium DTPA; C112666:gadoversetamide