ULTRASONIC TISSUE CHARACTERIZATION OF THE PROSTATE

Ultrasonic tissue-type imaging of prostate cancer

Prostate cancer (PCa) is diagnosed by means of needle biopsies typically guided by transrectalultrasound (TRUS). TRUS provides an inexpensive and effective means of visualizing gland anatomy and systematically directing each biopsy needle to a specific region within the gland. However, identification of cancerous regions in the prostate cannot be performed reliably using TRUS imaging or any oth...

LABORATORY INVESTIGATION TISSUE CHARACTERIZATION Ultrasonic tissue characterization: detection of acute myocardial ischemia in dogs

Ultrasonic tissue characterization is a new area of investigation in the field of cardiac ultrasound. The amplitude and frequency of the ultrasound signal are normally altered as the signal penetrates through tissue. It is assumed that the amplitude distribution and frequency shift of diseased or edematous tissue are different than those of normal tissue. A statistical approach to the analysis ...

Estimation of myocardial infarct size with ultrasonic tissue characterization.

BACKGROUND Ultrasonic tissue characterization (UTC) can distinguish normal from infarcted myocardium. Infarcted myocardium shows an increase in integrated backscatter and loss of cardiac cycle-dependent variation in backscatter. The cyclic variation of backscatter is closely related to regional myocardial contractile function; the latter is a marker of myocardial ischemia. The present study was...

Ultrasonic Characterization of Materials with Applications in Bone Tissue Modeling

Breast tissue characterization using FARMA modeling of ultrasonic RF echo.

A number of empirical and analytical studies demonstrated that the ultrasound RF echo reflected from tissue exhibits 1/f characteristics. In this paper, we propose to model 1/f characteristics of the ultrasonic RF echo by a novel parsimonious model, namely the fractional differencing auto regressive moving average (FARMA) process, and evaluated diagnostic value of model parameters for breast ca...