نتایج جستجو برای: quantitative ultrasound

تعداد نتایج: 420750  

Journal: :Investigative ophthalmology & visual science 1994
C Tello J Liebmann S D Potash H Cohen R Ritch

PURPOSE To evaluate intraobserver and interobserver reproducibility of measurement of images obtained during ultrasound biomicroscopy. METHODS Four anterior segment images of four normal patients were obtained by a single examiner. The measurements of three independent observers were compared to assess interobserver reproducibility in quantifying the images. Thirteen different anterior segmen...

Journal: :The Journal of the Acoustical Society of America 2014
C Payan T J Ulrich P Y Le Bas T Saleh M Guimaraes

Developed in the late 1980s, Nonlinear Resonant Ultrasound Spectroscopy (NRUS) has been widely employed in the field of material characterization. Most of the studies assume the measured amplitude to be proportional to the strain amplitude which drives nonlinear phenomena. In 1D resonant bar experiments, the configuration for which NRUS was initially developed, this assumption holds. However, i...

2015
William D. O’Brien

The objective of soft tissue quantitative ultrasound (QUS) is to improve diagnostic ultrasound imaging capabilities via quantitative outcomes. Over the past three or so decades, there have been an increasing number of QUS successes. A temporal view moves us back in history almost six decades when techniques and theoretical developments were in their earliest stages that impacted modern QUS succ...

2014
Patricia C Henwood David Beversluis Alissa A Genthon Christina N Wilson Brendan Norwood Daniel Silva Mark Foran Mauricio G Romero Yury B Martinez Luis E Vargas Alejandro C Ocampo Carlos E Vallejo Christian Arbelaez

BACKGROUND Emergency medicine (EM) is a growing specialty in Colombia with five residency programs in the country. EM leadership is interested in incorporating point-of-care (POC) ultrasound into a standardized national EM residency curriculum. This study is a nationwide survey of Colombian EM residents designed to explore the current state of POC ultrasound use within EM residencies and examin...

Journal: :European cells & materials 2007
P Kiviranta J Töyräs M T Nieminen M S Laasanen S Saarakkala H J Nieminen M J Nissi J S Jurvelin

In order efficiently to target therapies intending to stop or reverse degenerative processes of articular cartilage, it would be crucial to diagnose osteoarthritis (OA) earlier and more sensitively than is possible with the existing clinical methods. Unfortunately, current clinical methods for OA diagnostics are insensitive for detecting the early degenerative changes, e.g., arising from collag...

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