نتایج جستجو برای: ultrasound scanner

تعداد نتایج: 127783  

Journal: :Entropy 2016
Po-Hsiang Tsui Yung-Liang Wan

This study explored the effects of fatty infiltration on the signal uncertainty of ultrasound backscattered echoes from the liver. Standard ultrasound examinations were performed on 107 volunteers. For each participant, raw ultrasound image data of the right lobe of liver were acquired using a clinical scanner equipped with a 3.5-MHz convex transducer. An algorithmic scheme was proposed for ult...

2013
Robert Krzysztof Mlosek Sylwia Malinowska

Ultrasound imaging of the skin is becoming more and more popular. Skin ultrasound examinations are used both in order to assess healthy skin and to evaluate pathological lesions. They are mainly performed in dermatology as well as in broadly understood aesthetic medicine and cosmetology. At present, skin imaging is enabled by high-frequency equipment and high-quality conventional devices. The i...

2016
Tuathan P. O'Shea Jeffrey C. Bamber Emma J. Harris

PURPOSE Ultrasound-based motion estimation is an expanding subfield of image-guided radiation therapy. Although ultrasound can detect tissue motion that is a fraction of a millimeter, its accuracy is variable. For controlling linear accelerator tracking and gating, ultrasound motion estimates must remain highly accurate throughout the imaging sequence. This study presents a temporal regularizat...

2015
James Shue-Min Yeh Charles A. Sennoga Ellen McConnell Robert Eckersley Meng-Xing Tang Sussan Nourshargh John M. Seddon Dorian O. Haskard Petros Nihoyannopoulos Christoph E Hagemeyer

RATIONALE Microbubbles conjugated with targeting ligands are used as contrast agents for ultrasound molecular imaging. However, they often contain immunogenic (strept)avidin, which impedes application in humans. Although targeting bubbles not employing the biotin-(strept)avidin conjugation chemistry have been explored, only a few reached the stage of ultrasound imaging in vivo, none were report...

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