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https://www.readbyqxmd.com/read/28543090/association-of-pulse-pressure-with-left-ventricular-geometry-and-function-in-elderly-nonhypertensive-patients-with-diabetes-a-3d-speckle-tracking-echocardiography-study
#1
Qingqing Wang, Kaibin Tan, Hongmei Xia, Yunhua Gao
PURPOSE: The aims of this study were to investigate and compare the left ventricular (LV) geometry and function in elderly nonhypertensive type 2 diabetic patients with normal (NPP, <60 mm Hg) and with high (HPP, ≥60 mmHg) 24-hour pulse pressure, and to explore the independent predictors of LV strain values in these patients. METHODS: A total of 76 elderly nonhypertensive type 2 diabetic patients with normal (≥55%) LV ejection fraction (LVEF) were included, 36 of whom had HPP...
May 22, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28542533/ultrasonography-methods-for-predicting-malignancy-in-canine-mammary-tumors
#2
Marcus Antonio Rossi Feliciano, Ricardo Andrés Ramirez Uscategui, Marjury Cristina Maronezi, Ana Paula Rodrigues Simões, Priscila Silva, Beatriz Gasser, Leticia Pavan, Cibele Figueira Carvalho, Júlio Carlos Canola, Wilter Ricardo Russiano Vicente
The aim of this study was to evaluate and compare the efficacy of B-mode, Doppler, contrast-enhanced ultrasonography (CEUS), and Acoustic Radiation Force Impulse (ARFI) elastography in predicting malignancy in canine mammary masses. This was a prospective cohort study from 2014 to 2016, which included 153 bitches with one or more mammary masses. A total of 300 masses were evaluated by ultrasonography (B-mode, Doppler, CEUS, and ARFI) and subsequently classified as benign or malignant by histopathology. Each ultrasound parameters studied were compared between benign and malignant masses by Chi-square or Student tests and differences were considered significant when P < 0...
2017: PloS One
https://www.readbyqxmd.com/read/28541191/fast-numerical-simulation-of-focused-ultrasound-treatments-during-respiratory-motion-with-discontinuous-motion-boundaries
#3
Michael Schwenke, Joachim Georgii, Tobias Preusser
OBJECTIVE: Focused ultrasound (FUS) is rapidly gaining clinical acceptance for several target tissues in the human body. Yet, treating liver targets is not clinically applied due to a high complexity of the procedure (noninvasiveness, target motion, complex anatomy, blood cooling effects, shielding by ribs, and limited image-based monitoring). To reduce the complexity, numerical FUS simulations can be utilized for both treatment planning and execution. These use-cases demand highly accurate and computationally efficient simulations...
May 23, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28541140/chest-ultrasound-findings-in-pulmonary-tuberculosis
#4
Paolo Agostinis, Roberto Copetti, Laura Lapini, Geraldo Badona Monteiro, Augusto N'Deque, Aldo Baritussio
In resource-limited countries, the diagnosis of pulmonary tuberculosis (TB) is based on clinical findings, chest radiography and the demonstration of acid-fast bacilli in sputum. Few data are available on the use of ultrasound (US) to diagnose pulmonary TB. Chest US was performed in patients with lung TB from a rural African setting, to look for signs of the disease and to clarify the role US may have in the diagnosis of pulmonary TB. Sixty adult patients diagnosed with lung TB underwent chest US. All patients had abnormal findings...
January 1, 2017: Tropical Doctor
https://www.readbyqxmd.com/read/28535431/partial-ablation-of-the-pancreas-of-sprague-dawley%C3%A2-rats-by-focused-ultrasound-reveals-no-significant-adverse-effects-on-glycometabolism-function
#5
Lan Ao, Na Hu, Hai Xia Hu, Qing Liu, Zi Hao Zhao, Long Xing Liu, Jun Ru Wu, Fa Qi Li, Liao Qiong Fang
To investigate the safety of focused ultrasound (FUS) partial ablation on the pancreas of Sprague Dawley® (SD) rats by histopathological examination of the outcome and investigation of glycometabolism function changes after local ablation. A total of 135 healthy SD rats were randomly divided into three groups (n=45 of each): FUS ½ group, FUS ¼ group, and control group. Levels of serum amylase was measured using the enzyme dynamics method, fasting blood glucose was measured by the glucose oxidase-peroxidase method, fasting serum insulin was measured by direct chemiluminescence assay, and an ELISA was used to measure fasting serum glucagon immediately after treatment, and at 2h, 3days, 1, 2, 3 and 4weeks, 3 and 6months after FUS ablation...
May 11, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28534779/fpga-implementation-of-the-coupled-filtering-method-and-the-affine-warping-method
#6
Chen Zhang, Tianzhu Liang, Philip Mok, Weichuan Yu
In ultrasound image analysis, speckle tracking methods are widely applied to study the elasticity of body tissue. However, "feature-motion decorrelation" still remains as a challenge for speckle tracking methods. Recently, a coupled filtering method and an affine warping method were proposed to accurately estimate strain values when the tissue deformation is large. The major drawback of these methods is the high computational complexity. Even the GPU-based program requires a long time to finish the analysis...
May 17, 2017: IEEE Transactions on Nanobioscience
https://www.readbyqxmd.com/read/28527199/the-value-of-contrast-enhanced-ultrasound-ceus-using-a-high-end-ultrasound-system-in-the-characterization-of-endoleaks-after-endovascular-aortic-repair-evar
#7
J Rübenthaler, M Reiser, V Cantisani, D Rjosk-Dendorfer, D A Clevert
PURPOSE: To evaluate the value of contrast-enhanced ultrasound (CEUS) using a high-end ultrasound system in the characterization of endoleaks after endovascular aortic repair (EVAR). MATERIAL AND METHODS: In this mono-center study, 41 patients were retrospectively analyzed after being examined using a modern high-end ultrasound system (RS80A with Prestige, Samsung Medison Co., Ltd., Seoul, Korea). The maximum diameters of the aneurysms were measured in two planes (right-left and ventral-dorsal)...
May 18, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28511905/hemorheological-alterations-in-adults-with-prediabetes-identified-by-hemoglobin-a1c-levels
#8
M A Marini, T V Fiorentino, F Andreozzi, G C Mannino, E Succurro, A Sciacqua, F Perticone, G Sesti
BACKGROUND AND AIMS: A link between increased blood viscosity and type 2 diabetes has been previously reported. Herein, we investigated the association of blood viscosity with prediabetes, identified by glycated hemoglobin A1c (HbA1c) according to the new American Diabetes Association criteria, and subclinical atherosclerosis. METHODS AND RESULTS: The study cohort includes 1136 non-diabetic adults submitted to anthropometrical evaluation, an oral glucose tolerance test and ultrasound measurement of carotid intima-media thickness (IMT)...
April 21, 2017: Nutrition, Metabolism, and Cardiovascular Diseases: NMCD
https://www.readbyqxmd.com/read/28511226/contrast-enhanced-ultrasound-in-the-follow-up-of%C3%A2-endoleaks-after-endovascular-aortic-repair-evar
#9
Johannes Rübenthaler, Hanna Zimmermann, Marco Armbruster, Katharina Müller-Peltzer, Florian Bogner, Maximilian Reiser, Dirk-André Clevert
Endovascular aortic repair (EVAR) has become established in the treatment of abdominal aortic aneurysms and shows potential benefits such as a low perioperative morbidity and a short hospitalization duration. The follow-up after EVAR primarily consists of lifelong postinterventional imaging of the aneurysm size in order to detect complications such as endoleaks or stent dislocation. Computed tomography angiography, an imaging modality that uses ionizing radiation and that relies on a contrast medium which is dependent on thyroid and renal function, is widely used for follow-up...
May 16, 2017: Ultraschall in der Medizin
https://www.readbyqxmd.com/read/28511163/-impact-of-physical-activity-on-anthropometric-indices-in-patients-with-nonalcoholic-fatty-liver-disease-and-pre-diabetes-or-type-2-diabetes
#10
Віталіна В Івачевська
INTRODUCTION: Nonalcoholic fatty liver disease (NAFLD) is currently the most common cause of chronic liver disease in many developed countries. The first step, which is offered to all patients with NAFLD includes lifestyle modifications, low-calorie diet, increased physical activity and giving up smoking. OBJECTIVE: to evaluate the efficiency of the daily 30-minute walking at a fast pace on the dynamics of anthropometric indices in patients with NAFLD and pre-diabetes or type 2 diabetes...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/28509763/achilles-tendon-load-is-progressively-increased-with-reductions-in-walking-speed
#11
Torsten Brauner, Philippe Pourcelot, Nathalie Crevier-Denoix, Thomas Horstmann, Scott C Wearing
INTRODUCTION: Achilles tendon rehabilitation protocols commonly recommend a gradual increase in walking speed to progressively intensify tendon loading. This study used transmission-mode ultrasound to evaluate the influence of walking speed on loading of the human Achilles tendon in vivo. METHODS: Axial transmission speed of ultrasound was measured in the right Achilles tendon of 33 adults (mean ± SD; age, 29 ± 3 years; height, 1.725 ± 0.069 m; weight, 71.4 ± 19...
May 15, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28504954/automatic-fetal-head-circumference-measurement-in-ultrasound-using-random-forest-and-fast-ellipse-fitting
#12
Jing Li, Yi Wang, Baiying Lei, Jie-Zhi Cheng, Jing Qin, Tianfu Wang, Shenli Li, Dong Ni
Head circumference (HC) is one of the most important biometrics in assessing fetal growth during prenatal ultrasound examinations. However, the manual measurement of this biometric by doctors often requires substantial experience. We developed a learning-based framework that used prior knowledge and employed a fast ellipse fitting method (ElliFit) to measure HC automatically. We first integrated the prior knowledge about the gestational age and ultrasound scanning depth into a random forest classifier to localize the fetal head...
May 12, 2017: IEEE Journal of Biomedical and Health Informatics
https://www.readbyqxmd.com/read/28499124/peri-ultrasound-for-modeling-linear-and-nonlinear-ultrasonic-response
#13
Mohammad Hadi Hafezi, Reza Alebrahim, Tribikram Kundu
The objective of this paper is to introduce a novel fast modeling tool called peri-ultrasound for linear/nonlinear ultrasonic wave propagation modeling. This modeling approach is based on peridynamic theory. It does not require monitoring of the crack clapping phenomenon or artificially changing the stiffness of the element when two surfaces of the crack come in contact. Peri-ultrasound tool enables us to detect the material nonlinearity in very early stages of crack growth. Nonlinear ultrasonic behavior could be nicely modeled by the proposed peri-ultrasound tool...
May 5, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28493435/a-fast-peak-searching-algorithm-for-ultrasonic-elastography
#14
Si Chen, Wenxia Wang, Hui Zhang, Jiajun Wang
Tissue axial strain estimation with ultrasound elastography has become a hot field in recent years. However, for keypoints tracking-based elastography algorithms, locating extrema in multimodal ultrasonic radiofrequency signals is still a challenging problem. In this paper, a new method is proposed to locate the local maxima and minima of the RF signals directly without derivation operation. This algorithm can accurately locate extrema even if disturbed peaks resulting from different noise exist. Furthermore, the new algorithm can speed up approximately 79% of the implementation process as compared with the standard cross-correlation method on the same computing platform...
May 11, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28477259/measuring-hemoglobin-prior-to-early-discharge-without-routine-surveillance-ultrasound-after-percutaneous-native-renal-biopsy-in-children
#15
Prakash Muthusami, Sunit Sunder, Claire Gallibois, Evan Kitamura, Dimitri Parra, Joao Amaral, Phillip John, Damien Noone, Bairbre Connolly
BACKGROUND: We aimed to evaluate the role of post-procedural hemoglobin (hb), without pre-discharge ultrasound (US), after US-guided renal biopsy in children. METHODS: A retrospective review was conducted of consecutive outpatient native kidney biopsies over an 8-year period. Procedures were performed under real-time US guidance. Data collected included number of passes, presence and size of perinephric hematoma, age, body mass index (BMI), blood pressure (BP), fasting status, hb and platelets...
May 5, 2017: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/28471148/clinical-imaging-in-patients-experiencing-chest-pain
#16
Angelo Silverio, Rodolfo Citro
Non-invasive imaging modalities integrate the clinical and laboratory diagnostic work-up of patients admitted in emergency department for chest pain. Transthoracic echocardiography is the first-line imaging tool because it is rapidly and widely available, bedside feasible and cost-effective. Even when a comprensive exam is not feasible, a fast focused ultrasound exam should be performed. Contrast enhanced computed tomography is an easily accessible tool with specific application in patients suspected for pulmonary embolism (PE) and acute coronary syndrome (ACS) according to the pre-test risk assessment and to the clinical status...
May 3, 2017: Minerva Cardioangiologica
https://www.readbyqxmd.com/read/28469313/evaluation-of-cytology-in-lung-cancer-diagnosis-based-on-ebus-tbna
#17
Zhengwei Dong, Hui Li, Hongbin Jiang, Chunyan Wu
AIMS: Endobronchial ultrasound (EBUS) is a relatively new modality that can be used to guide transbronchial needle aspiration (TBNA) of mediastinal lymph nodes. At present, researches on the sensitivity and specificity of cytopathology based on the EBUS-TBNA are deficient; therefore, we want to evaluate the value of cytology based on the EBUS-TBNA in this article. MATERIALS AND METHODS: We reviewed the 379 cases that underwent the EBUS-TBNA in Shanghai Pulmonary Hospital from April 2010 to May 2011...
April 2017: Journal of Cytology
https://www.readbyqxmd.com/read/28459072/serum-25-hydroxyvitamin-d3-levels-are-associated-with-carotid-intima-media-thickness-and-carotid-atherosclerotic-plaque-in-type-2-diabetic-patients
#18
Yurong Wang, Huijuan Zhang
Objective. To investigate the relationship between serum 25-hydroxyvitamin D3 [25(OH)D3] levels and carotid intima-media thickness (IMT) as well as carotid atherosclerotic plaque in patients with type 2 diabetes mellitus (T2DM). Methods. 314 patients with T2DM were enrolled in this study. The clinical data and laboratory examinations of subjects were recorded, such as serum 25(OH)D3, hemoglobin A1c (HbA1c), serum lipids, fasting blood glucose (FBG), and other biochemical parameters. Color Doppler ultrasound was used to measure carotid IMT and carotid atherosclerotic plaques...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28458908/endoscopic-ultrasound-guided-ethanol-ablation-therapy-for-pancreatic-insulinoma-an-unusual-strategy
#19
Adriana de Sousa Lages, Isabel Paiva, Patrícia Oliveira, Francisco Portela, Francisco Carrilho
SUMMARY: Insulinomas are the most frequent cause of hyperinsulinaemic hypoglycaemia. Although surgical enucleation is the standard treatment, a few other options are available to high-risk patients who are elderly or present with co-morbidities. We present a case report of an 89-year-old female patient who was admitted to the emergency department due to recurrent hypoglycaemia, especially during fasting. Laboratory work-up raised the suspicion of hyperinsulinaemic hypoglycaemia, and abdominal CT scan revealed a 12 mm nodular hypervascular lesion of the pancreatic body suggestive of neuroendocrine tumour...
2017: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28448893/diabetes-status-modifies-the-association-between-carotid-intima-media-thickness-and-incident-heart-failure-the-atherosclerosis-risk-in-communities-study
#20
Valery S Effoe, Eric E McClendon, Carlos J Rodriguez, Lynne E Wagenknecht, Gregory W Evans, Patricia P Chang, Alain G Bertoni
AIMS: Increasing carotid intima-media thickness (CIMT) is associated with incident heart failure (HF). We investigated whether this association differs by diabetes status. METHODS: We characterized 13,590 Atherosclerosis Risk in Communities Study participants free of baseline HF into normal fasting glucose (NFG, glucose <100mg/dl), impaired fasting glucose (IFG, glucose 100-125mg/dl), and type 2 diabetes (T2D, glucose ≥126mg/dl, self-report, or use of diabetes drugs)...
April 13, 2017: Diabetes Research and Clinical Practice
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