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Acoustic, texture, and morphological features of the breast in ultrasound imaging were extracted for computer-aided diagnosis. In addition, correlations among different categories of features were analyzed. Clinical data from 14 patients (7 malignant and 7 benign samples) were acquired. A custom-made setup was used for simultaneous data acquisition of B-mode ultrasound and limited-angle tomography...
Sound-velocity inhomogencities degrade both the spatial resolution and the contrast in diagnostic ultrasound. We previously proposed an adaptive imaging approach based on the coherence of the data received in the channels of a transducer array, and we tested it on phantom data. In this study, the approach was tested on clinical breast data and compared with a correlation-based method that has been...
The aim of this study was to determine the efficacy of using the sound velocity and tissue attenuation to clinically discriminate breast cancer from healthy tissues. The methods for reconstructing the sound-velocity and attenuation-coefficient distributions were previously proposed and tested on tissue-mimicking phantoms. The methods require only raw channel data acquired by a linear transducer array,...
Sound-velocity inhomogeneities degrade both the spatial resolution and the contrast in diagnostic ultrasound. We previously proposed an adaptive imaging approach based on the coherence of the data received in the channels of a transducer array, and tested it on phantom data. In this study the approach was tested on clinical breast data, and compared with a correlation-based method that has been widely...
Ultrasonic computed tomography (UCT) is used for noninvasive temperature measurement in hyperthermia in human body. A model for temperature measurement has been established, and an UCT algorithm for the model has been developed. The authors also analyze the resolution and the time requirements of the measurement, and a method of sparse reconstruction to measure the distribution of sound speed and...
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