Affiliation:
1. Department of Medical Physics University of Wisconsin Madison, WI 53706
Abstract
A method for quantitative imaging of ultrasonic backscatter levels has been implemented on a clinical imager. The method is based on comparing echo signal data from a sample or patient to echo data processed in the same way but acquired from a reference phantom. The attenuation coefficient and the backscatter coefficient of the reference phantom are known, permitting these quantities to be estimated for the sample. In the present paper, the spatial location of echo data acquisition is retained in the backscatter data analysis; quantitative “backscatter estimator” images are constructed, from which the backscatter coefficient over a region of interest may be obtained. When applied to human liver images, backscatter coefficients determined in 10 normal subjects were in approximate agreement with in vitro liver backscatter coefficients reported by previous Workers.
Subject
Radiology Nuclear Medicine and imaging,Radiological and Ultrasound Technology
Reference26 articles.
1. Holm H., Kristensen J., Rasmussen S., Pedersen J., Hancke S., Jensen F., Gammelgaard J., Smith E. Abdominal Ultrasound Static and Dynamic Scanning 2nd edition, pp. 96–97 (Munksgard, Copenhagen, 1980.)
2. Quantitative Ultrasonic Detection and Classification of Diffuse Liver Disease Comparison with Human Observer Performance
3. Quantitative estimation of liver attenuation and echogenicity: normal state versus diffuse liver disease.
4. Is ultrasonography useful in the assessment of diffuse parenchymal liver disease?
5. Measurements of calf liver ultrasonic differential and total scattering cross sections
Cited by
30 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献