title: Comparison of techniques for in vivo attenuation measurements.
authors.forename: K J
authors.initials: KJ
authors.lastname: Parker
authors.forename: R M
authors.initials: RM
authors.lastname: Lerner
authors.forename: R C
authors.initials: RC
authors.lastname: Waag
mesh_terms: D005583:Fourier Analysis; D006801:Humans; D008107:Liver Diseases / Q000175:diagnosis*; D012815:Signal Processing, Computer-Assisted; D014463:Ultrasonography / Q000379:methods*