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ultrasound elastography

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https://www.readbyqxmd.com/read/28735336/acoustic-radiation-force-impulse-arfi-elastography-and-serological-markers-in-assessment-of-liver-fibrosis-and-free-portal-pressure-in-patients-with-hepatitis-b
#1
Jun Li, Jie Yu, Xin-Yu Peng, Ting-Ting Du, Jia-Jia Wang, Jin Tong, Gui-Lin Lu, Xiang-Wei Wu
BACKGROUND The aim of this study was to investigate the feasibility of using acoustic radiation force impulse (ARFI) elastography, AST-to-platelet ratio index (APRI), and FIB-4 in assessing liver fibrosis and free portal pressure in patients with hepatitis B. MATERIAL AND METHODS We enrolled 126 patients with hepatitis B who underwent liver surgery at the General Surgery Department of the First Affiliated Hospital of Shihezi University Medical School from February 2013 to August 2015. Preoperatively, shear wave velocity (SWV) of the liver was measured with the Siemens S2000 ultrasound system to reflect liver stiffness...
July 23, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28735201/ultrasound-elastography-of-the-prostate-using-an-unconstrained-modulus-reconstruction-technique-a-pilot-clinical-study
#2
REVIEW
Seyed Reza Mousavi, Hassan Rivaz, Gregory J Czarnota, Abbas Samani, Ali Sadeghi-Naini
A novel full-inversion-based technique for quantitative ultrasound elastography was investigated in a pilot clinical study on five patients for non-invasive detection and localization of prostate cancer and quantification of its extent. Conventional-frequency ultrasound images and radiofrequency (RF) data (~5 MHz) were collected during mechanical stimulation of the prostate using a transrectal ultrasound probe. Pre and post-compression RF data were used to construct the strain images. The Young's modulus (YM) images were subsequently reconstructed using the derived strain images and the stress distribution estimated iteratively using finite element (FE) analysis...
July 20, 2017: Translational Oncology
https://www.readbyqxmd.com/read/28731271/ultrasound-elastography-for-carpal-tunnel-pressure-measurement-a-cadaveric-validation-study
#3
Kazutoshi Kubo, Boran Zhou, Yu-Shiuan Cheng, Tai-Hua Yang, Bo Qiang, Kai-Nan An, Steven L Moran, Peter C Amadio, Xiaoming Zhang, Chunfeng Zhao
Carpal tunnel pressure is a key factor in the etiology of carpal tunnel syndrome. Numerous approaches have been conducted to measure carpal tunnel pressure. However, most techniques are invasive and take time and effort. We have developed an innovative approach to noninvasively assess the tunnel pressure by using the ultrasound surface wave elastography (USWE) technique. In a previous study it was shown that the shear wave speed in a tendon increased linearly with increasing tunnel pressure enclosed the tendon in a simple tendon model...
July 21, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28729183/differentiation-between-idiopathic-granulomatous-mastitis-and-malignant-breast-lesions-using-strain-ratio-on-ultrasonic-elastography
#4
B Yağcı, I Erdem Toslak, B Çekiç, M Öz, B R Karakaş, M Akdemir, S Yıldız, D Süren, D Bova
PURPOSE: The goal of this study was to investigate the strain elastography imaging characteristics of idiopathic granulomatous mastitis (IGM) and compare strain ratio values of IGM with those of breast cancer. MATERIAL AND METHODS: Twenty-three consecutive women with IGM (mean age, 37.9±6.6 [SD] years; range: 26-52 years) and 45 women with malignant breast tumor (mean age, 52.8±12.0 [SD], range, 32-77 years) who had been scheduled for ultrasound-guided core biopsy were recruited to the study...
July 17, 2017: Diagnostic and Interventional Imaging
https://www.readbyqxmd.com/read/28721972/ultrasound-imaging-features-of-isolated-pancreatic-tuberculosis
#5
Yi Dong, Christian Jürgensen, Rajesh Puri, Mirko D'Onofrio, Michael Hocke, Wen-Ping Wang, Nathan Atkinson, Malay Sharma, Christoph F Dietrich
BACKGROUND AND OBJECTIVES: Isolated pancreatic tuberculosis (PTB) is extremely rare worldwide. The purpose of this multicenter retrospective study is to analyze imaging features of histologically confirmed isolated PTB in order to determine the diagnostic features of the new methods contrast enhanced ultrasound (CEUS), ultrasound elastography and contrast enhanced endoscopic ultrasound (CE-EUS). PATIENTS AND METHODS: We report on a retrospective data collection of 12 cases of PTB confirmed by histology or cytology...
July 19, 2017: Endoscopic Ultrasound
https://www.readbyqxmd.com/read/28720285/ultrasound-based-shear-wave-elastography-in-the-assessment-of-patients-with-diabetic-kidney-disease
#6
Flaviu Bob, Iulia Grosu, Ioan Sporea, Simona Bota, Alina Popescu, Alexandra Sima, Roxana Şirli, Ligia Petrica, Romulus Timar, Adalbert Schiller
In previous studies of acoustic radiation force impulse (ARFI) elastography, using Virtual Touch tissue quantification (VTQ) (Siemens Acuson S2000), it was reported that the measurement of renal shear wave speed in patients with chronic kidney disease (CKD) is not influenced exclusively by renal fibrosis. The purpose of the present study was to analyze the role of VTQ in patients with diabetic kidney disease, considered the main cause of CKD. The study group included 164 patients: 80 patients with diabetic kidney disease (DKD) and 84 without renal disease or diabetes mellitus...
July 15, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28715086/optimal-use-of-transient-elastography-and-acoustic-radiation-force-impulse-to-stage-liver-fibrosis-in-hiv-hcv-coinfected-patients-in-clinical-practice
#7
Juan José López, Núria Pérez-Àlvarez, Raul V Rodríguez, Antoni Jou, Pere Carbonell, José A Jiménez, Laura Soldevila, Montserrat Tenesa, Jordi Tor, Bonaventura Clotet, Jordi Bechini, Cristina Tural
OBJECTIVES: Liver fibrosis (LF) is crucial for the individualized management of patients with hepatitis C virus (HCV). We evaluated the concordance between two noninvasive methods for staging LF, transient elastography (TE) and acoustic radiation force impulse (ARFI), in patients coinfected with human immunodeficiency virus and HCV. We propose an algorithm for optimal use of both techniques in routine clinical practice. METHODS: A total of 89 human immunodeficiency virus/HCV-coinfected patients underwent TE and ARFI on the same day...
July 17, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28708299/shear-wave-elastography-for-surgically-verified-breast-papillary-lesions-is-it-effective-for-differentiation-between-benign-and-malignant-lesions
#8
Hye Jeong Choi, Kyung Hee Ko, Hae Kyoung Jung
OBJECTIVES: To evaluate the effectiveness of shear wave elastography (SWE) for differentiating benign from malignant breast papillary lesions METHODS: B-mode ultrasound (US) and SWE were available in 56 surgically confirmed papillary lesions (48 [85.7%] benign and 8 [14.3%] malignant). The diagnostic performances of US, SWE parameters, and combined US with SWE parameters were calculated by receiver operating characteristic curve analysis and compared. RESULTS: The highest area under the receiver operating characteristic curve (Az ) value for US was 0...
July 14, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28706152/the-role-of-endobronchial-ultrasound-elastography-in-the-diagnosis-of-mediastinal-and-hilar-lymph-nodes
#9
Ye Gu, Hong Shi, Chunxia Su, Xiaoxia Chen, Shijia Zhang, Wei Li, Fengying Wu, Guanghui Gao, Hao Wang, Haiqing Chu, Caicun Zhou, Fei Zhou, Shengxiang Ren
Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) has been widely used for diagnosis and mediastinal lymph nodes staging in patients with suspicious lung cancer. Ultrasound elastography is a novel sonographical technique that can evaluate tissue compressibility. The aim of the present study was to investigate the diagnostic yield of elastography for differentiating malignant and benign mediastinal lymph nodes. Conventional EBUS B-mode features, including size, shape, border distinction, echogenicity, central hilar structure with central blood vessel and coagulation necrosis were also evaluated...
July 6, 2017: Oncotarget
https://www.readbyqxmd.com/read/28701893/risk-assessment-of-hepatocellular-carcinoma-in-general-population-by-liver-stiffness-in-combination-with-controlled-attenuation-parameter-using-transient-elastography-a-cross-sectional-study
#10
Takaaki Sugihara, Masahiko Koda, Tomomitsu Matono, Kinya Okamoto, Yoshikazu Murawaki, Hajime Isomoto, Shiho Tokunaga
BACKGROUND: Hepatocellular carcinoma (HCC) in patients without hepatitis B (HBV) and -C virus (HCV) infection are increasing in Japan. Method for detecting high-risk liver diseases of HCC in general population has still not been established. Liver stiffness measurement (LSM) and Controlled Attenuation Parameter (CAP) using transient elastography (TE; FibroScan System) are useful for detecting liver fibrosis and steatosis. The aim of this study is to clarify TE for risk assessment of HCC in general population...
June 2017: Yonago Acta Medica
https://www.readbyqxmd.com/read/28700131/high-intensity-focused-ultrasound-hifu-and-phase-sensitive-optical-coherence-tomography-phs-oct-for-high-resolution-surface-acoustic-wave-saw-elastography
#11
Kanheng Zhou, Nhan Le, Zhihong Huang, Chunhui Li
Elastography has the ability of quantitatively evaluating the mechanical properties of soft tissue, thus is helpful for diagnosis and treatment monitoring for many diseases, e.g. skin diseases. Surface acoustic waves (SAWs) have been proven to be a non-invasive, non-destructive method for accurate characterization of tissue elastic properties. Current surface acoustic wave elastography using high energy laser pulse or mechanical shaker still have some problems. In order to improve SAW elastography in medical application, a new technique was proposed in this paper, which combines high intensity focused ultrasound (HIFU) as a SAWs impulse inducer and PhS-OCT as a SAWs detector...
July 12, 2017: Journal of Biophotonics
https://www.readbyqxmd.com/read/28699617/effect-of-bone-soft-tissue-friction-on-ultrasound-axial-shear-strain-elastography
#12
Songyuan Tang, Anuj Chaudhry, Namhee Kim, J N Reddy, Raffaella Righetti
Bone-soft tissue friction is an important factor affecting several musculoskeletal disorders, frictional syndromes and the ability of a bone fracture to heal. However, this parameter is difficult to determine using non-invasive imaging modalities, especially in clinical settings. Ultrasound axial shear strain elastography is a non-invasive imaging modality that has been used in the recent past to estimate the bonding between different tissue layers. As most elastography methods, axial shear strain elastography is primarily used in soft tissues...
July 12, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28698404/association-of-conventional-ultrasound-elastography-and-clinicopathological-factors-with-axillary-lymph-node-status-in-invasive-ductal-breast-carcinoma-with-sizes-10-mm
#13
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...
July 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28693244/improvement-of-diagnostic-efficiency-in-distinguishing-the-benign-and-malignant-thyroid-nodules-via-conventional-ultrasound-combined-with-ultrasound-contrast-and-elastography
#14
Mei-Juan Liu, Yan-Ming Men, Yong-Lin Zhang, Yu-Xi Zhang, Hao Liu
We aimed to evaluate the diagnostic values of conventional ultrasound (US), ultrasound contrast (UC) and ultrasound elastography (UE) in distinguishing the benign and malignant thyroid nodules. A total of 100 patients with thyroid nodules receiving operative treatment were selected; they underwent the conventional US, UE and UC examinations before operation, respectively. The nodules received pathological examination after operation to distinguish benign from malignant lesions. The sensitivity, specificity and diagnostic accordance rate of each diagnostic method was evaluated by receiver operating characteristic (ROC) curve, and the area under the curve (AUC) of ROC was calculated...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28691320/use-of-ultrasound-shear-wave-elastography-to-evaluate-change-in-cervical-stiffness-during-pregnancy
#15
Tetsuo Ono, Daisuke Katsura, Kazutaka Yamada, Kaori Hayashi, Akiko Ishiko, Shunichiro Tsuji, Fuminori Kimura, Kentaro Takahashi, Takashi Murakami
AIM: The aim of this study was to evaluate the usefulness of shear-wave elastography (SWE) for measuring change in cervical stiffness during pregnancy, with regions of interest (ROI) designed for easy identification. METHODS: A total of 280 women were enrolled in this study. SWE was performed at a routine prenatal visit. A measurement area was chosen at the anterior part of the cervix, and a circular ROI 5 mm in diameter was set at two points, 5-10 mm (lower point) and 15-20 mm (upper point) from the external cervical os...
July 10, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28690935/acoustic-radiation-force-impulse-imaging-in-benign-and-malignant-breast-lesions
#16
Jayapriya Jayaraman, Venkatraman Indiran, Kanakaraj Kannan, Prabakaran Maduraimuthu
BACKGROUND: Elastography is a promising way to assess tissue differences regarding stiffness or elasticity, which has been historically assessed manually by palpation. Combined with conventional imaging modalities, shear wave elastography can potentially evaluate the stiffness of a breast lesion and consequently help detect malignant breast tumor from benign ones. The aim of this study was to evaluate the diagnostic role of shear wave elastography in breast lesions in the Indian population...
June 1, 2017: Curēus
https://www.readbyqxmd.com/read/28688156/comparison-and-combination-of-strain-and-shear-wave-elastography-of-breast-masses-for-differentiation-of-benign-and-malignant-lesions-by-quantitative-assessment-preliminary-study
#17
Mirinae Seo, Hye Shin Ahn, Sung Hee Park, Jong Beum Lee, Byung Ihn Choi, Yu-Mee Sohn, So Youn Shin
OBJECTIVES: To compare the diagnostic performance of strain and shear wave elastography of breast masses for quantitative assessment in differentiating benign and malignant lesions and to evaluate the diagnostic accuracy of combined strain and shear wave elastography. METHODS: Between January and February 2016, 37 women with 45 breast masses underwent both strain and shear wave ultrasound (US) elastographic examinations. The American College of Radiology Breast Imaging Reporting and Data System (BI-RADS) final assessment on B-mode US imaging was assessed...
July 8, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28680900/semitendinosus-tendon-for-acl-reconstruction-regrowth-and-mechanical-property-recovery
#18
Stephen M Suydam, Daniel H Cortes, Michael J Axe, Lynn Snyder-Mackler, Thomas S Buchanan
BACKGROUND: Semitendinosus/gracilis (STG) tendon autograft has been used effectively for restoring knee stability after anterior cruciate ligament (ACL) rupture. Though ACL reconstruction with STG autograft is an effective surgical technique for return to sports, short-term hamstring strength asymmetries exist after surgery. Although imaging evidence has demonstrated regrowth and reorganization of the semitendinosus (ST) tendon, no studies show whether the regrowth is associated with residual muscle function...
June 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28680156/miniature-probe-for-mapping-mechanical-properties-of-vascular-lesions-using-acoustic-radiation-force-optical-coherence-elastography
#19
Yueqiao Qu, Teng Ma, Youmin He, Mingyue Yu, Jiang Zhu, Yusi Miao, Cuixia Dai, Pranav Patel, K Kirk Shung, Qifa Zhou, Zhongping Chen
Cardiovascular diseases are the leading cause of fatalities in the United States. Atherosclerotic plaques are one of the primary complications that can lead to strokes and heart attacks if left untreated. It is essential to diagnose the disease early and distinguish vulnerable plaques from harmless ones. Many methods focus on the structural or molecular properties of plaques. Mechanical properties have been shown to change drastically when abnormalities develop in arterial tissue. We report the development of an acoustic radiation force optical coherence elastography (ARF-OCE) system that uses an integrated miniature ultrasound and optical coherence tomography (OCT) probe to map the relative elasticity of vascular tissues...
July 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28678769/value-of-endobronchial-ultrasound-elastography-in-diagnosis-of-central-lung-lesions
#20
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 elastography in central lung lesions remains largely unknown. MATERIAL AND METHODS A total of 57 patients with central lung lesions underwent ultrasonic bronchoscope examination...
July 5, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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