Spectral variations in tissues and phantoms.
This paper is concerned with the characterization of attenuation in tissue. A simple method for measuring frequency dependent attenuation is demonstrated. The effects of frequency dependent scatter on the measurement of attenuation are also considered in order to determine the theoretical and practical ramifications of this interfering effect. Finally, a means of placing definitive error bounds on the statistical reliability of the measurement is discussed.
D000818:Animals; D001699:Biometry; D055592:Biophysical Phenomena; D001703:Biophysics; D004285:Dogs; D005583:Fourier Analysis; D007668:Kidney / Q000033:anatomy & histology; D008099:Liver / Q000033:anatomy & histology; D008953:Models, Anatomic; D013154:Spleen / Q000033:anatomy & histology; D014463:Ultrasonography