A Computational Observer For Performing Contrast-Detail Analysis Of Ultrasound Images

H. Lopez; M. H. Loew

doi:10.1117/12.968615

27 June 1988 A Computational Observer For Performing Contrast-Detail Analysis Of Ultrasound Images

H. Lopez, M. H. Loew

Proceedings Volume 0914, Medical Imaging II; (1988) https://doi.org/10.1117/12.968615
Event: Medical Imaging II, 1988, Newport Beach, CA, United States

Abstract

Contrast-Detail (C/D) analysis allows the quantitative determination of an imaging system's ability to display a range of varying-size targets as a function of contrast. Using this technique, a contrast-detail plot is obtained which can, in theory, be used to compare image quality from one imaging system to another. The C/D plot, however, is usually obtained by using data from human observer readings. We have shown earlier(7) that the performance of human observers in the task of threshold detection of simulated lesions embedded in random ultrasound noise is highly inaccurate and non-reproducible for untrained observers. We present an objective, computational method for the determination of the C/D curve for ultrasound images. This method utilizes digital images of the C/D phantom developed at CDRH, and lesion-detection algorithms that simulate the Bayesian approach using the likelihood function for an ideal observer. We present the results of this method, and discuss the relationship to the human observer and to the comparability of image quality between systems.

Citation Download Citation

H. Lopez and M. H. Loew "A Computational Observer For Performing Contrast-Detail Analysis Of Ultrasound Images", Proc. SPIE 0914, Medical Imaging II, (27 June 1988); https://doi.org/10.1117/12.968615

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