[Equipment-independent ultrasound tissue characterization of testis and prostate].
The result of a B-scan ultrasound examination is strongly dependent on the type of the used B-system, the chosen system parameters and the experience and critical analysis of the clinical investigator. The estimation of quantitative acoustic parameters, independent of the type of the used B-system, is one way to overcome the subjective nature and the problems of the interpretation of B-scan images. A procedure was developed to determine acoustical tissue specific parameters (ultrasound attenuation, relative backscatter coefficient) in terms of the ultrasound spectroscopy and to correct the system effects. A requirement for the calculation of acoustical parameters is the availability of primary rf echo signals without any preprocessing. Up to now measurements of phantom materials and in-vivo investigations on human testis and prostate have been carried out. The effects of pathological changes in the tissue state on the acoustical parameters are demonstrated in some examples.
Gärtner
T
T
Institut für Medizinische Physik und Biophysik, Medizinische Fakultät, Martin-Luther-Universität Halle-Wittenberg, Saale.
Zacharias
M
M
Jenderka
K V
KV
Heynemann
H
H
Cobet
U
U
D016477:Artifacts; D003199:Computer Systems; D004867:Equipment Design; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000295:instrumentation*; D008297:Male; D011467:Prostate / Q000000981:diagnostic imaging*; D011471:Prostatic Neoplasms / Q000000981:diagnostic imaging*; D012680:Sensitivity and Specificity; D013736:Testicular Neoplasms / Q000000981:diagnostic imaging*; D013737:Testis / Q000000981:diagnostic imaging*; D014463:Ultrasonography / Q000295:instrumentation*
Geräteunabhängige Ultraschall-Gewebecharakterisierung von Hoden und Prostata.