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ultrasound elastography

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https://www.readbyqxmd.com/read/29458217/a-new-two-dimensional-shear-wave-elastography-for-noninvasive-assessment-of-liver-fibrosis-in-healthy-subjects-and-in-patients-with-chronic-liver-disease
#1
Carla Serra, Valentina Grasso, Fabio Conti, Cristina Felicani, Elena Mazzotta, Marco Lenzi, Gabriella Verucchi, Antonietta D'errico, Pietro Andreone
PURPOSE: To assess the performance of two-dimensional shear wave elastography (2D-SWE) on the GE LOGIQ E9 ultrasound system in a cohort of healthy subjects and to investigate its accuracy in the staging of liver fibrosis in patients with chronic liver disease (CLD) using liver biopsy as a reference standard. MATERIALS AND METHODS: From October 2014 to June 2016, 54 healthy subjects and 174 patients with CLD were consecutively enrolled. Liver fibrosis stage was assessed by the METAVIR scoring system...
February 19, 2018: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/29456656/comparison-of-the-diagnostic-efficacy-between-ultrasound-elastography-and-magnetic-resonance-imaging-for-breast-masses
#2
Rong Cheng, Jing Li, Li Ji, Huining Liu, Limin Zhu
The present study compared the efficacy of ultrasound elastography (UE), magnetic resonance imaging (MRI) and the combination of the two methods (UE+MRI) in the differential diagnosis of benign and malignant breast tumors. In total, 86 patients with breast masses were recruited and evaluated by UE, MRI and UE+MRI. Strain ratios of UE were calculated for the breast mass and adjacent normal tissues. In addition, the receiver operating characteristic (ROC) curve was obtained, while the sensitivity and specificity were calculated to determine the optimal cut-off point for the differential diagnosis...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29456640/comparative-study-of-ultrasonic-elastography-and-conventional-ultrasound-in-diagnosis-of-malignant-anus-neoplasm
#3
Yicheng Zhu, Shuhao Deng, Yuan Zhang, Quan Jiang
The application value of conventional ultrasound and ultrasonic elastography (UE) in preoperative diagnosis and combined diagnosis of malignant anus neoplasms was investigated. One hundred and twenty patients, whose mass was detected by digital rectal examination, were examined using UE and conventional ultrasound before operation, and the results were compared with those of histopathological examinations after operation, so that the accuracy and imaging features of UE as well as UE combined with conventional ultrasound in diagnosing malignant anus neoplasm were analyzed...
March 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29451165/eus-elastography-how-to-do-it
#4
Christoph F Dietrich, Ellison Bibby, Christian Jenssen, Adrian Saftoiu, Julio Iglesias-Garcia, Roald F Havre
Strain elastography as used in EUS (EUS-real-time tissue elastography [RTE]) is a qualitative technique and provides information on the relative stiffness between one tissue and another. This article reviews the principles, technique, and interpretation of EUS-RTE in various organs. It includes information on how to optimize the technique as well as a discussion on pitfalls and artifacts. We also refer to the article describing RTE using conventional ultrasound transducers.
January 2018: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/29442483/quantification-of-ultrasound-imaging-in-the-staging-of-hepatic-fibrosis
#5
Paolo Borro, Silvana G Dellepiane, Rinaldo Pellicano, Laura Gemme, Sharmila Fagoonee, Gianni Testino
OBJECTIVE: The need for a staging of hepatic fibrosis has become particularly urgent in the last few years in order to start new therapeutic treatments. The objective of this study is to identify ultrasound descriptors and achieve a staging of hepatic fibrosis with non-invasive, rapid and inexpensive methods, both as an alternative and a support to the ultrasound elastography examination. MATERIALS AND METHODS: This study evaluated 196 patients under treatment at the Alcohological Regional Center...
February 13, 2018: Panminerva Medica
https://www.readbyqxmd.com/read/29439780/evolving-imaging-techniques-for-staging-axillary-lymph-nodes-in-breast-cancer
#6
REVIEW
S Lowes, A Leaver, K Cox, K Satchithananda, D Cosgrove, A Lim
The presence and extent of axillary nodal metastases at the time of breast cancer diagnosis is a critical factor in disease prognosis and plays a central role in deciding the best treatment for patients. Accurate assessment of the axilla is therefore an essential component in staging breast cancer. Over the years, axillary staging has evolved from surgical axillary lymph node dissection (ALND), with its numerous associated long-term complications, to the much less-radical surgical sentinel lymph node excision biopsy (SLNB), the current reference standard...
February 10, 2018: Clinical Radiology
https://www.readbyqxmd.com/read/29434865/diagnostic-evaluations-of-ultrasound-and-magnetic-resonance-imaging-in-mammary-duct-ectasia-and-breast-cancer
#7
Lei Song, Liang Li, Bin Liu, Dexin Yu, Fengguo Sun, Mingming Guo, Zhengmin Ruan, Feixue Zhang
The objective of the present study was to evaluate the diagnostic efficiency of ultrasound (US) and magnetic resonance imaging (MRI) in the diagnosis and differential diagnosis of mammary duct ectasia (MDE) and breast cancer. This retrospective study was performed on 35 patients with MDE and 105 patients with breast cancer using US and MRI. Imaging features, semi-quantitative and quantitative parameters were analyzed to determine their diagnostic value for MDE and breast cancer. The average age of patients with breast cancer was increased compared with that of patients with MDE...
February 2018: Oncology Letters
https://www.readbyqxmd.com/read/29430675/ultrasound-elastographic-measurement-of-sciatic-nerve-displacement-and-shear-strain-during-active-and-passive-knee-extension
#8
Richard Ellis, Maheswaran Rohan, James Fox, Juvena Hitt, Helene Langevin, Sharon Henry
There is current need for objective measures of sciatic nerve mobility in patients with sciatic-type pain. The objective of the study was to assess the feasibility and reliability of ultrasound elastography to quantify sciatic nerve displacement and shear strain at the sciatic nerve-hamstring muscle interface during active and passive knee extension-flexion exercises performed while sitting in healthy people. Ultrasound elastography showed excellent intrarater within-session reliability for assessing sciatic nerve displacement and sciatic nerve-hamstring muscle interface shear strain during active knee extension-flexion exercises...
February 12, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29427494/diagnosis-of-non-alcoholic-fatty-liver-disease-non-alcoholic-steatohepatitis-non-invasive-tests-are-enough
#9
REVIEW
Laurent Castera
Non-alcoholic fatty liver disease is a major cause of liver disease worldwide and the most common liver disorder in Western countries, affecting around 25% of the general population. Fibrosis is the major long-term histological prognostic criteria of this disease. Liver biopsy cannot be realistically performed in such a huge population and, moreover, has well-known limitations (invasiveness, rare but potentially life-threatening complications and sampling variability). Over the past decade, there has been a growing interest in alternative novel strategies for the non-invasive evaluation of fibrosis...
February 2018: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29424448/comparison-of-ultrasound-elastography-and-color-doppler-ultrasonography-for-distinguishing-small-triple-negative-breast-cancer-from-fibroadenoma
#10
Soo Hyun Yeo, Ga Ram Kim, Su Hyun Lee, Woo Kyung Moon
OBJECTIVES: To compare the performance of ultrasound elastography and color Doppler ultrasonography (US) in distinguishing small, oval, or round triple-negative breast cancer from fibroadenoma and the influence on the further management decision at US. METHODS: In total, 131 biopsy-proven oval or round fibroadenomas (n = 68) and triple-negative breast cancers (n = 63) smaller than 2 cm were included. Three blinded readers assessed the images from US, elastography, and color Doppler imaging according to the Breast Imaging Reporting and Data System lexicon independently...
February 9, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29420159/identifying-the-mechanical-and-neural-properties-of-the-sternocleidomastoid-muscles
#11
Bhillie D Luciani, David M Desmet, Amani A Alkayyali, Joshua M Leonardis, David Benjamin Lipps
Neck muscles are preferentially activated in specific force directions, but the constraints that the central nervous system considers when programming these preferred directions of muscle activity are unknown. The current study utilized ultrasound shear wave elastography (SWE) to investigate whether the material properties of the sternocleidomastoid (SCM) muscles exhibit preferred directions similar to their preferred direction of muscle activity during an isometric task. Twenty-four healthy participants matched isometric forces in 16 axial directions...
February 8, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29416814/association-of-conventional-ultrasound-elastography-and-clinicopathological-factors-with-axillary-lymph-node-status-in-invasive-ductal-breast-carcinoma-with-sizes-10-mm
#12
Hui Liu, Guang Xu, Ming-Hua Yao, Huan Pu, Yan Fang, Li-Hua Xiang, Rong Wu
Background: To evaluate whether conventional ultrasound, elastography [conventional strain elastography of elasticity imaging, acoustic radiation force impulse induced strain elastography of virtual touch tissue imaging, and a novel two-dimensional shear wave elastography of virtual touch tissue imaging quantification] and clinicopathological factors are associated with axillary lymph node metastasis in invasive ductal breast carcinoma with sizes > 10 mm. Materials and Methods: We evaluated 150 breast lesions from 148 patients using the above methods and the clinicopathological factors...
January 5, 2018: Oncotarget
https://www.readbyqxmd.com/read/29413453/reliability-of-ultrasound-shear-wave-elastography-in-assessing-low-back-musculature-elasticity-in-asymptomatic-individuals
#13
Shane Koppenhaver, Joshua Kniss, Daniel Lilley, Michael Oates, Cesar Fernández-de-Las-Peñas, Ruth Maher, Theodore Croy, Minoru Shinohara
Patients with low back pain commonly exhibit impaired morphology and function of spinal musculature that may be quantifiable using shear-wave elastography (SWE). The purpose of this study was to assess the intra-rater and test-retest reliability of SWE elasticity measures of the lumbar erector spinae and multifidus muscles during rest and differing levels of contraction in asymptomatic individuals. This single-group repeated-measures design involved a baseline measurement session and a follow-up session 3 days later...
February 2, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29408793/imaging-corneal-biomechanical-responses-to-ocular-pulse-using-high-frequency-ultrasound
#14
Elias Pavlatos, Hong Chen, Keyton Clayson, Xueliang Pan, Jun Liu
Imaging corneal biomechanical changes or abnormalities is important for better clinical diagnosis and treatment of corneal diseases. We propose a novel ultrasound-based method, called ocular pulse elastography (OPE), to image corneal deformation during the naturally occurring ocular pulse. Experiments on animal and human donor eyes, as well as synthetic radiofrequency (RF) data, were used to evaluate the efficacy of the OPE method. Using very high-frequency ultrasound (center frequency = 55 MHz), correlation-based speckle tracking yielded an accuracy of less than 10% error for axial tissue displacements of or above...
February 2018: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/29406405/quantifying-effect-of-onabotulinum-toxin-a-on-passive-muscle-stiffness-in-children-with-cerebral-palsy-using-ultrasound-shear-wave-elastography
#15
Joline E Brandenburg, Sarah F Eby, Pengfei Song, William Bamlet, Gary C Sieck, Kai-Nan An
OBJECTIVE: A pilot study to longitudinally quantify effect of onabotulinum toxin A (BoNT-A) on passive muscle properties in children with cerebral palsy (CP) using ultrasound shear wave elastography (SWE). DESIGN: Prospective longitudinal cohort study RESULTS: Between 1 and 3 months post-BoNT-A, a significant improvement in the shear modulus of the lateral gastrocnemius was found at 10° plantar flexion (PF) (-7.57 [-10.98, -5.07], p=0.02) and 0° PF (-14.74 [-18...
February 5, 2018: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/29404767/shear-wave-elastography-can-evaluate-annulus-fibrosus-alteration-in-adolescent-scoliosis
#16
Tristan Langlais, Claudio Vergari, Raphael Pietton, Jean Dubousset, Wafa Skalli, Raphael Vialle
OBJECTIVES: In vitro studies showed that annulus fibrosus lose its integrity in idiopathic scoliosis. Shear-wave ultrasound elastography can be used for non-invasive measurement of shear-wave speed (SWS) in vivo in the annulus fibrosus, a parameter related to its mechanical properties. The main aim was to assess SWS in lumbar annulus fibrosus of scoliotic adolescents and compare it to healthy subjects. METHODS: SWS was measured in 180 lumbar IVDs (L3L4, L4L5, L5S1) of 30 healthy adolescents (13 ± 1...
February 5, 2018: European Radiology
https://www.readbyqxmd.com/read/29402486/could-ultrasound-elastography-reflect-liver-function
#17
Tingting Qiu, Hong Wang, Jinzhen Song, Gang Guo, Yujun Shi, Yan Luo, Jibin Liu
The purpose of this study was to investigate whether ultrasound elastography reflects liver function reserve relative to liver fibrosis histology. Sixty-five New Zealand rabbits were divided into an experimental group (n = 45) and a control group (n = 20). In the experimental group, liver fibrosis (F1-F4) was induced by subcutaneous injection of carbon tetrachloride. Point shear wave elastography and the indocyanine green (ICG) elimination test were performed for the two groups at 4-wk intervals for 56 wk...
February 2, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29400545/ultrasound-elastography-as-an-imaging-biomarker-for-detection-of-early-tumour-response-to-chemotherapy-in-a-murine-breast-cancer-model-a-feasibility-study
#18
Jian-Wei Wang, Zhi-Xing Guo, Qing-Guang Lin, Wei Zheng, Shu-Lian Zhuang, Shi-Yang Lin, An-Hua Li, Xiao-Qing Pei
OBJECTIVE: This study investigated the feasibility of using strain elastography (SE) and real time shear wave elastography (RT-SWE) to evaluate early tumor response to cytotoxic chemotherapy in a murine xenograft breast cancer tumor model. METHODS: MCF-7 breast cancer-bearing nude mice were treated with either cisplatin 2 mg/kg plus paclitaxel 10 mg/kg (treatment group) or sterile saline (control group) once daily for 5 days. The tumor elasticity was measured by SE or RT-SWE before and after therapy...
February 5, 2018: British Journal of Radiology
https://www.readbyqxmd.com/read/29400378/the-value-of-ultrasound-diagnosis-in-the-multidisciplinary-approach-of-cutaneous-tumours-case-report
#19
Avram Manea, Diana Crisan, Alexandru Florin Badea, Iuliu Dinu Dumitrascu, Mihaela Felicia Baciut, Simion Bran, Ileana Mitre, Maria Crisan, Grigore Baciut
We report the case of a senior patient, presenting with two cutaneous tumours in which the clinical and dermoscopic examination pointed towards a basal cell carcinoma. Ultrasound revealed highly vascularised tumours and elastography showed increased rigidity. Histological examination of both lesions following complete resection was consistent with squamous cell carcinomas. The distinctive feature of this case consists of the complex non-invasive diagnostic imaging of the tumour morphology, performed in real time, revealing aspects compatible with highly proliferative malignant tumours...
February 4, 2018: Medical Ultrasonography
https://www.readbyqxmd.com/read/29400377/the-added-value-of-contemporary-ultrasound-technologies-in-the-diagnosis-of-malignant-tumours-of-the-gastrointestinal-system-a-case-report
#20
Johannes Rübenthaler, Maximilian Reiser, Dirk-André Clevert
Ultrasound of the gastrointestinal system has become more popular among clinicians and is an important tool for evaluation and follow-up. Ultrasound has a special value in patients with Crohn's disease for the evaluation of disease activity but also for the evaluation of abdominal complications and shows comparable results to other imaging modalities. With the introduction of elastography and contrast-enhanced ultrasound into clinical routine, THE sonographic evaluation of the small bowel is even more sophisticated and even more precise...
February 4, 2018: Medical Ultrasonography
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