نتایج جستجو برای: elastography

تعداد نتایج: 5434  

2016
Naomi Winn Radhesh Lalam Victor Cassar-Pullicino

Ultrasound is an essential modality within musculoskeletal imaging, with the recent addition of elastography. The elastic properties of tissues are different from the acoustic impedance used to create B mode imaging and the flow properties used within Doppler imaging, hence elastography provides a different form of tissue assessment. The current role of ultrasound elastography in the musculoske...

2014
Jin Young Kwak Eun-Kyung Kim

Ultrasonography (US)-based elastography has been introduced as a noninvasive technique for evaluating thyroid nodules that encompasses a variety of approaches such as supersonic shear imaging and acoustic radiation force impulse imaging as well as real-time tissue elastography. However, the diagnostic performances for differentiating malignant thyroid nodules from benign ones with elastography ...

Journal: :Medical ultrasonography 2014
Ioan Sporea Simona Bota Adrian Săftoiu Roxana Şirli Oana Gradinăru-Taşcău Alina Popescu Monica Lupşor Platon Carmen Fierbinteanu-Braticevici Dan Ionuţ Gheonea Larisa Săndulescu Radu Badea

The use of liver elastography has substantially developed in the past few years; the introduction of novel elastographic methods (Transient Elastography, point Shear Wave Elastography, Real Time Shear Wave Elastography, Strain Elastography) has changed the perspective in the evaluation of liver disease. The ongoing research in this area is mainly focused on diffuse liver diseases and for predic...

Journal: :Optics letters 2016
Pengfei Hai Junjie Yao Guo Li Chiye Li Lihong V Wang

Elastography can noninvasively map the elasticity distribution in biological tissue, which can potentially be used to reveal disease conditions. In this Letter, we have demonstrated photoacoustic elastography by using a linear-array photoacoustic computed tomography system. The feasibility of photoacoustic elastography was first demonstrated by imaging the strains of single-layer and bilayer ge...

Journal: :Radiographics : a review publication of the Radiological Society of North America, Inc 2016
Aparna Srinivasa Babu Michael L Wells Oleg M Teytelboym Justin E Mackey Frank H Miller Benjamin M Yeh Richard L Ehman Sudhakar K Venkatesh

Chronic liver disease has multiple causes, many of which are increasing in prevalence. The final common pathway of chronic liver disease is tissue destruction and attempted regeneration, a pathway that triggers fibrosis and eventual cirrhosis. Assessment of fibrosis is important not only for diagnosis but also for management, prognostic evaluation, and follow-up of patients with chronic liver d...

2016
Aparna Srinivasa Babu Michael L. Wells Oleg M. Teytelboym Justin E. Mackey Frank H. Miller

Chronic liver disease has multiple causes, many of which are increasing in prevalence. The final common pathway of chronic liver disease is tissue destruction and attempted regeneration, a pathway that triggers fibrosis and eventual cirrhosis. Assessment of fibrosis is important not only for diagnosis but also for management, prognostic evaluation, and follow-up of patients with chronic liver d...

2009
Nishikant Deshmukh Hassan Rivaz Emad Boctor

Quasi-static elastography involves estimating the displacement field of the tissue undergoing slow compression. Since elastography is computationally expensive, many compromises have been made to perform it in real time. Parallelized algorithms and implementations for freehand palpation elastography are proposed in this paper to speed the computation. We present parallel implementations for Nor...

2017
Hai-Yan He Jin-Liang Chen Hang Ma Jie Zhu Dan-Dan Wu Xue-Dong Lv

BACKGROUND Ultrasound elastography is an imaging modality used to show tissue stiffness in tumor pathophysiological processes that promote the formation of stiffer tissues. Endobronchial ultrasound (EBUS) elastography is an ultrasound elastography-based technique for measuring tissue stiffness during EBUS-guided transbronchial needle aspiration (EBUS-TBNA). The diagnostic value of EBUS elastogr...

2018
Eduardo F. C. Fleury Ana Claudia Gianini Karem Marcomini Vilmar Oliveira

OBJECTIVES To determine the applicability of a computer-aided diagnostic system strain elastography system for the classification of breast masses diagnosed by ultrasound and scored using the criteria proposed by the breast imaging and reporting data system ultrasound lexicon and to determine the diagnostic accuracy and interobserver variability. METHODS This prospective study was conducted b...

2014
Su Hyun Lee Jung Min Chang Nariya Cho Hye Ryoung Koo Ann Yi Seung Ja Kim Ji Hyun Youk Eun Ju Son Seon Hyeong Choi Shin Ho Kook Jin Chung Eun Suk Cha Jeong Seon Park Hae Kyoung Jung Kyung Hee Ko Hye Young Choi Eun Bi Ryu Woo Kyung Moon

Ultrasound (US) elastography is a valuable imaging technique for tissue characterization. Two main types of elastography, strain and shear-wave, are commonly used to image breast tissue. The use of elastography is expected to increase, particularly with the increased use of US for breast screening. Recently, the US elastographic features of breast masses have been incorporated into the 2nd edit...

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