Biomedical subjects

P Nauth

Publications and source records attributed to P Nauth.

4 recordsLinked to original sources

PubMed1986

[Value of physical parameters and digital signal processing in tissue differentiation].

It was the aim of this study to improve tissue characterization using ultrasonic scatter signals and image processing procedures by computer. Analysis of various tissue probes and phantoms showed that structures can be differentiated by scatter as a function of frequency and angle of scatter. The application of this method as an imaging system was realised by a reconstruction algorithm to compute scatter images. By means of analysing images of the thyroid and prostate we found that the detection rate of computerised texture analysis is much higher than that of visual evaluation.

Diagnosis, Differential↗

PubMed1985

[Qualification and quality control in sonography].

On the basis of guidelines issued by the Kassenärztliche Vereingung Hessen, some criteria for the application of sonographic examinations are presented. Minimal requirements for sonographic equipment in certain specialties are mentioned, and it is pointed out how not only case history and clinical examination but also one's own sonographic evidence are important for a accurate sonographic diagnosis.

Abdomen↗

PubMed1985

[Quantitative technics in ultrasonic diagnosis].

This paper presents techniques for computer-aided analysis of medical ultrasonic images. Methods of image processing, feature extraction and a classification algorithm for tissue characterization are described. Based on these techniques a pattern recognition system for semi-automatic analysis of ultrasonic images has been developed and proved within three clinical studies, which aimed to improve the ultrasound diagnosis of the prostate, the thyroid and the female breast. The results show that computer analysis of ultrasonic images is capable of providing a quantitative diagnosis as well as of differentiating tumor lesions by sonography.

Breast Neoplasms↗

PubMed1984

[Computer-assisted evaluation of ultrasound images of the prostate].

The prostate was examined by sonography to diagnose tumourous changes in the organ. Several visual parameters were found to interpret the pictures. The ultrasonic images can be prepared and improved by means of image-processing algorithm were computed while evolving a method for the automatic evaluation of ultrasonic images. The value of this method and its results are discussed.

Computers↗