title: Image subtraction in gadolinium-enhanced MR imaging.
abstract: Image subtraction in gadolinium-enhanced MR imaging is a broadly applicable postprocessing technique that can be used with any field strength and T1-weighted sequence. This technique is typically a quick and efficient means of obtaining fat suppression that avoids the limitations of incomplete fat saturation due to field inhomogeneity and increased imaging times associated with conventional fat-suppression techniques. In particular, image subtraction may be valuable on lower strength magnetic field systems that lack effective chemical-shift fat-suppression techniques. Because source data are viewed in conjunction with subtracted images, image subtraction is unlikely to introduce errors in interpretation. By performing unenhanced and enhanced sequences in a manner amenable to image subtraction, radiologists should find this technique to be a useful and almost cost-free option.
authors.affiliation: Department of Radiology, New York University Medical Center, NY 10016, USA.
authors.forename: V S
authors.initials: VS
authors.lastname: Lee
authors.forename: M A
authors.initials: MA
authors.lastname: Flyer
authors.forename: J C
authors.initials: JC
authors.lastname: Weinreb
authors.forename: G A
authors.initials: GA
authors.lastname: Krinsky
authors.forename: N M
authors.initials: NM
authors.lastname: Rofsky
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003287:Contrast Media; D005260:Female; D005682:Gadolinium; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013382:Subtraction Technique
chemical_list: D003287:Contrast Media; D005682:Gadolinium