Abstract — Liver chronic diseases constitute an important public health issue. When diagnosing diffuse hepatopathies, ultrasonography is a simple method bringing useful information but not safe enough when determining the difference between certain diseases (steatosis, chronic hepatitis or early cirrhosis) or quantifying their severity. Present study is focused on examining pure fibrosis tissues in order to get a clear overview on how the presence

Neoplasic diseases are widely recognized as extremely disabling, requiring in advanced stages a large amount of medical, technical, and financial support and, eventually, leading to death. This is why it is recommended to early diagnose them, gaining time for proper care and/or cure. Hepatocellular carcinoma (HCC) is one of these neoplasic diseases, meeting the requirements to become the target of a close surveillance: it is a frequent condition;

During the last years, skin aging has become an area of increasing research interest. High frequency ultrasound allows the “in vivo” appreciation of certain histological parameters and offers new characteristic markers, which may quantify the severity of the cutaneous senescence process. This paper focuses on measuring the changes in skin thickness and dermis echogenicity , as part of the complex ageing process, on different intervals of age.

AIM: To determine whether acoustic radiation force impulse (ARFI) elastography is a reliable method for predicting fibrosis severity in patients with chronic hepatitis C virus (HCV) hepatitis. METHODS: We performed a multicenter study including 274 subjects with HCV chronic hepatitis in which we compared ARFI with liver biopsy (LB). In each patient we performed LB (evaluated according to the Metavir score) and ARFI measurements (using a Siemens Acuson

Abstract: Texture analysis is viewed as a method to enhance the diagnosis power of classical B-mode ultrasound image. The present paper aims to evaluate and eliminate the dependence between the human expert and the performance of such a texture analysis system in predicting the cirrhosis in chronic hepatitis C patients. 125 consecutive chronic hepatitis C patients were included in this study. Ultrasound images were acquired from each patient and

Abstract: The evolution of the cutaneous structure after topical treatment with P63 antiaging complex, assessed with high frequency ultrasound, is studied by means of multicriteria optimization model. Due to the fact that the impact of the treatment may influence the quality of life, a medical index which measures, from this point of view, the efficacy of the treatment is given, also taking into account medical and economical aspects.

After a brief survey on the parametric deformable models, we develop an iterative method based on the finite difference schemes in order to obtain energy-minimizing snakes. We estimate the approximation error, the residue, and the truncature error related to the corresponding algorithm, then we discuss its convergence, consistency, and stability. Some aspects regarding the prosthetic sugical methods that implement the above numerical methods are

The noninvasive diagnosis of the malignant tumors is an important issue in research nowadays. Our purpose is to elaborate computerized, texture-based methods for performing computer-aided characterization and automatic diagnosis of these tumors, using only the information from ultrasound images. In this paper, we considered some of the most frequent abdominal malignant tumors: the hepatocellular carcinoma and the colonic tumors. We compared these

Background: High-frequency ultrasound is a noninvasive tool that offers characteristic markers, quantifying the cutaneous changes of the physiological senescence process. Aims: The aim was to assess the changes in skin thickness, dermal density and echogenicity, as part of the ageing process, with different age intervals. Methods : The study was performed on 160 patients, aged 40.4 ± 21.2, divided into four age categories: