نتایج جستجو برای: gray scale ultrasonography

تعداد نتایج: 654976  

2010
Sigrid M. Agcaoili Marcelino L. Morales

Objective: This study aimed to evaluate the clinical utility of power Doppler ultrasonography (PDUS) in the detection of prostate cancer and determine its predictive ability compared to digital rectal examination, serum PSA levels and gray-scale transrectal ultrasonography, using biopsy as the reference standard. Materials and Methods: This is a prospective cross-sectional study of 100 consecut...

2018
Giovanna Ferraioli Maria Franca Meloni

This review focuses on the use of contrast-enhanced ultrasonography (CEUS) with SonoVue (Bracco Imaging) for the diagnosis of focal liver lesions (FLLs), guidance during ablative treatment, and follow-up of liver tumors. Multicenter trials have shown that the performance of CEUS for the characterization of FLLs is similar to that of contrast-enhanced computed tomography or contrast-enhanced mag...

Journal: :Medical ultrasonography 2015
Radu Badea Răzvan Zaro Marcel Tanțău Liliana Chiorean

Ultrasonography is generally accepted and performed as a first choice imaging technique in patients with jaundice. The method allows the discrimination between cholestatic and mechanical jaundice. The existing procedures are multiple: gray scale, Doppler, i.v. contrast enhancement, elastography, tridimensional ultrasonography, each of these with different contribution to the positive and differ...

2012
R. Badea Simona Ioanitescu

Ultrasound exploration (ultrasonography) is a very common diagnostic method. It is part of imaging procedures, without using ionizing radiations but ultrasounds (US) with usual frequencies of 2 5 12 MHz. Ultrasounds cross biological environments and are reflected at the demarcation limit between structures of different consistencies. The current procedure of ultrasound examination called "scann...

2015
Wei Yang Min-Hua Chen Wei Wu Ying Dai Zhi-Hui Fan

This study compared the imaging features of conventional gray scale ultrasound (US) before and after contrast-enhanced ultrasound (CEUS) for focal liver lesions and 22 evaluated the role of US post-CEUS in characterizing liver lesions. 126 patients with 158 focal liver lesions underwent CEUS and US post-CEUS examination and entered this study. There were 74 hepatocellular carcinomas (HCC), 43 h...

Journal: :The Japanese Journal of Urology 1979

Journal: :Iranian journal of radiology : a quarterly journal published by the Iranian Radiological Society 2015
Ayla Buyukkaya Guven Tekbas Ramazan Buyukkaya

Twin reversed arterial perfusion (TRAP) sequence is a syndrome with poor prognosis, seen only in monochorionic monozygotic twin pregnancies. The incidence is one in 35.000 births and one in 100 monozygotic twin pregnancies. It is characterized with a recipient fetus exhibiting lethal anomalies including acardia and a pump fetus. Mortality is usually due to heart failure or premature labor cause...

ژورنال: سنجش و ایمنی پرتو 2019

The images of dental CBCT imaging systems used in conic shaped beams, stored in the DICOM format, have various applications in the dentistry, including bone density estimation to select the location of the orthodontic implant, bone loss detection and etc. In these systems, unlike CT imaging systems, the resulting images exhibit gray-scale non-uniformity in each of the different axis in FOV. Thi...

Journal: :Medical ultrasonography 2010
Carolina Botar-Jid Sorana Bolboaca Daniela Fodor Corina Bocsa Maria Magdalena Tamas Mihaela Micu Sorin M Dudea Dan Vasilescu Radu Badea

INTRODUCTION Ultrasonography provides information regarding synovial membrane proliferation and its vascularization. The AIM of our study was to evaluate the role of gray scale and power Doppler ultrasonography in assessing early rheumatoid arthritis by analyzing the scores determined by the evaluation of synovial proliferation, joint effusion, erosion or soft tissue swelling. MATERIAL AND ME...

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