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LOW CONTRAST DETECTABILITY AND CONTRAST/DETAIL ANALYSIS IN MEDICAL ULTRASOUND.

Publication ,  Journal Article
Smith, SW; Wagner, RF; Sandrik, JM; Lopez, H
Published in: IEEE transactions on sonics and ultrasonics
1983

The first- and second-order statistics of envelope detected ultrasound (US) B-mode images for the case of a scattering phantom with many scatterers per resolution cell have been previously derived. These characteristics are integrated over the region of a simulated focal (disk) lesion and the signal-to-noise ratio (SNR) for lesion detectability is obtained. This SNR requires the average number of independent speckle cells over the lesion area. This number is obtained from autocorrelation analysis (second-order statistics). By setting the SNR expression equal to the threshold value SNR//T required to detect a lesion in the presence of speckle noise, the dependence of lesion contrast on lesion diameter at threshold is found, i. e. , the contrast/detail function. This is a simple inverse relation for ideal observers of US B-scans. It is also found that the contrast/detail results for envelope detection in diagnostic ultrasound are almost identical with the results for square law detection (the usual laser case) with the latter serving as an upper limit for performance in lesion detection. Finally, the results of human observer performance using a contrast/detail phantom are compared with the predictions for optimal or ideal performance.

Duke Scholars

Published In

IEEE transactions on sonics and ultrasonics

Publication Date

1983

Volume

SU-30

Issue

3

Start / End Page

164 / 173
 

Citation

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Smith, S. W., Wagner, R. F., Sandrik, J. M., & Lopez, H. (1983). LOW CONTRAST DETECTABILITY AND CONTRAST/DETAIL ANALYSIS IN MEDICAL ULTRASOUND. IEEE Transactions on Sonics and Ultrasonics, SU-30(3), 164–173.
Smith, S. W., R. F. Wagner, J. M. Sandrik, and H. Lopez. “LOW CONTRAST DETECTABILITY AND CONTRAST/DETAIL ANALYSIS IN MEDICAL ULTRASOUND.IEEE Transactions on Sonics and Ultrasonics SU-30, no. 3 (1983): 164–73.
Smith SW, Wagner RF, Sandrik JM, Lopez H. LOW CONTRAST DETECTABILITY AND CONTRAST/DETAIL ANALYSIS IN MEDICAL ULTRASOUND. IEEE transactions on sonics and ultrasonics. 1983;SU-30(3):164–73.
Smith, S. W., et al. “LOW CONTRAST DETECTABILITY AND CONTRAST/DETAIL ANALYSIS IN MEDICAL ULTRASOUND.IEEE Transactions on Sonics and Ultrasonics, vol. SU-30, no. 3, 1983, pp. 164–73.
Smith SW, Wagner RF, Sandrik JM, Lopez H. LOW CONTRAST DETECTABILITY AND CONTRAST/DETAIL ANALYSIS IN MEDICAL ULTRASOUND. IEEE transactions on sonics and ultrasonics. 1983;SU-30(3):164–173.

Published In

IEEE transactions on sonics and ultrasonics

Publication Date

1983

Volume

SU-30

Issue

3

Start / End Page

164 / 173