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https://www.readbyqxmd.com/read/29346145/diagnostic-and-therapeutic-ultrasound-on-venous-and-arterial-ulcers-a-focused-review
#1
Steven J Kavros, Robert Coronado
GENERAL PURPOSE: To provide information about the use of ultrasound for diagnostic and therapeutic treatment of venous and arterial ulcers. TARGET AUDIENCE: This continuing education activity is intended for physicians, physician assistants, nurse practitioners, and nurses with an interest in skin and wound care. LEARNING OBJECTIVES/OUTCOMES: After completing this continuing education activity, you should be able to: ABSTRACT: To review the diagnostic and therapeutic use of ultrasound on venous and arterial ulcers...
February 2018: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/29345146/quantitative-contrast-enhanced-ultrasound-for-monitoring-vedolizumab-therapy-in-inflammatory-bowel-disease-patients-a-pilot-study
#2
Ruediger S Goertz, Daniel Klett, Dane Wildner, Raja Atreya, Markus F Neurath, Deike Strobel
Background Microvascularization of the bowel wall can be visualized and quantified non-invasively by software-assisted analysis of derived time-intensity curves. Purpose To perform software-based quantification of bowel wall perfusion using quantitative contrast-enhanced ultrasound (CEUS) according to clinical response in patients with inflammatory bowel disease treated with vedolizumab. Material and Methods In a prospective study, in 18 out of 34 patients, high-frequency ultrasound of bowel wall thickness using color Doppler flow combined with CEUS was performed at baseline and after 14 weeks of treatment with vedolizumab...
January 1, 2018: Acta Radiologica
https://www.readbyqxmd.com/read/29342916/coffee-intake-and-liver-steatosis-a-population-study-in-a-mediterranean-area
#3
Nicola Veronese, Maria Notarnicola, Anna Maria Cisternino, Rosa Reddavide, Rosa Inguaggiato, Vito Guerra, Ornella Rotolo, Iris Zinzi, Gioacchino Leandro, Mario Correale, Valeria Tutino, Giovanni Misciagna, Alberto Ruben Osella, Caterina Bonfiglio, Gianluigi Giannelli, Maria Gabriella Caruso For The Micol Group
Coffee drinking seems to have several beneficial effects on health outcomes. However, the effect on hepatic steatosis, depending on a high alcohol consumption (AFLD, alcoholic fatty liver disease) or on metabolic factors (non-alcoholic fatty liver disease, NAFLD), is still equivocal. Thus, we aimed to explore the potential association between coffee consumption and the presence and severity of hepatic steatosis in people with NAFLD or AFLD. In this cross-sectional study, coffee drinking was recorded using a semi-quantitative food frequency questionnaire, and categorized as yes vs...
January 15, 2018: Nutrients
https://www.readbyqxmd.com/read/29338016/ultrasound-mediated-delivery-and-distribution-of-polymeric-nanoparticles-in-the-normal-brain-parenchyma-of-a-metastatic-brain-tumour-model
#4
Habib Baghirov, Sofie Snipstad, Einar Sulheim, Sigrid Berg, Rune Hansen, Frits Thorsen, Yrr Mørch, Catharina de Lange Davies, Andreas K O Åslund
The treatment of brain diseases is hindered by the blood-brain barrier (BBB) preventing most drugs from entering the brain. Focused ultrasound (FUS) with microbubbles can open the BBB safely and reversibly. Systemic drug injection might induce toxicity, but encapsulation into nanoparticles reduces accumulation in normal tissue. Here we used a novel platform based on poly(2-ethyl-butyl cyanoacrylate) nanoparticle-stabilized microbubbles to permeabilize the BBB in a melanoma brain metastasis model. With a dual-frequency ultrasound transducer generating FUS at 1...
2018: PloS One
https://www.readbyqxmd.com/read/29318426/determining-procedures-for-simulation-based-training-in-radiology-a-nationwide-needs-assessment
#5
Leizl Joy Nayahangan, Kristina Rue Nielsen, Elisabeth Albrecht-Beste, Michael Bachmann Nielsen, Charlotte Paltved, Karen Gilboe Lindorff-Larsen, Bjørn Ulrik Nielsen, Lars Konge
OBJECTIVES: New training modalities such as simulation are widely accepted in radiology; however, development of effective simulation-based training programs is challenging. They are often unstructured and based on convenience or coincidence. The study objective was to perform a nationwide needs assessment to identify and prioritize technical procedures that should be included in a simulation-based curriculum. METHODS: A needs assessment using the Delphi method was completed among 91 key leaders in radiology...
January 9, 2018: European Radiology
https://www.readbyqxmd.com/read/29318418/investigation-of-the-effectiveness-of-therapeutic-ultrasound-with-high-resolution-ultrasonographic-cross-sectional-area-measurement-of-cervical-nerve-roots-in-patients-with-chronic-cervical-radiculopathy-a-prospective-controlled-single-blind-study
#6
Burcu Metin Ökmen, Korgün Ökmen, Lale Altan
PURPOSE: The purpose of our study was to evaluate the effects of therapeutic ultrasound (US) on chronic cervical radiculopathy (CR) patients using both the clinical parameters and the cross-sectional area (CSA) values of the cervical nerve roots (NR) measured by high-resolution ultrasonography (HRUS). METHODS: Thirty-two patients with chronic CR were included in this prospective, controlled, and single-blind study. All of the patients received therapeutic US at continuous mode, 1-MHz frequency, and 1...
January 9, 2018: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29301691/do-female-reproductive-stage-and-phenotype-influence-thermal-requirements-in-an-oviparous-lizard
#7
Guadalupe López Juri, Margarita Chiaraviglio, Gabriela Cardozo
Reproduction is an energetically costly activity that can alter thermal requirements in Squamata. This phenomenon has been largely studied in many viviparous species; however, little is known about the role of oviparous females in controlling temperature during vitellogenesis and embryo development before oviposition. Diversity of female phenotypes could be associated with diversity of thermoregulatory performance, since thermal requirements are frequently influenced by body shape. Furthermore, studying the thermoregulatory behaviour is fundamental to understand how females regulate their body temperature...
January 2018: Journal of Thermal Biology
https://www.readbyqxmd.com/read/29290810/tumour-vascular-shutdown-and-cell-death-following-ultrasound-microbubble-enhanced-radiation-therapy
#8
Ahmed El Kaffas, Mehrdad J Gangeh, Golnaz Farhat, William Tyler Tran, Amr Hashim, Anoja Giles, Gregory J Czarnota
High-dose radiotherapy effects are regulated by acute tumour endothelial cell death followed by rapid tumour cell death instead of canonical DNA break damage. Pre-treatment with ultrasound-stimulated microbubbles (USMB) has enabled higher-dose radiation effects with conventional radiation doses. This study aimed to confirm acute and longitudinal relationships between vascular shutdown and tumour cell death following radiation and USMB in a wild type murine fibrosarcoma model using in vivo imaging. Methods: Tumour xenografts were treated with single radiation doses of 2 or 8 Gy alone, or in combination with low-/high-concentration USMB...
2018: Theranostics
https://www.readbyqxmd.com/read/29290799/early-assessment-of-tumor-response-to-radiation-therapy-using-high-resolution-quantitative-microvascular-ultrasound-imaging
#9
Sandeep K Kasoji, Judith N Rivera, Ryan C Gessner, Sha X Chang, Paul A Dayton
Measuring changes in tumor volume using anatomical imaging weeks to months post radiation therapy (RT) is currently the clinical standard for indicating treatment response to RT. For patients whose tumors do not respond successfully to treatment, this approach is suboptimal as timely modification of the treatment approach may lead to better clinical outcomes. We propose to use tumor microvasculature as a biomarker for early assessment of tumor response to RT. Acoustic angiography is a novel contrast ultrasound imaging technique that enables high-resolution microvascular imaging and has been shown to detect changes in microvascular structure due to cancer growth...
2018: Theranostics
https://www.readbyqxmd.com/read/29287635/maternal-perception-of-fetal-movements-in-the-third-trimester-a-qualitative-description
#10
Billie Bradford, Robyn Maude
PROBLEM: Decreased fetal movements is a common reason for unscheduled antenatal assessment and is associated with adverse pregnancy outcome. BACKGROUND: Fetal movement counting has not been proven to reduce stillbirths in high-quality studies. AIMS: The aim was to explore a qualitative account of fetal movements in the third trimester as perceived by pregnant women themselves. METHODS: Using qualitative descriptive methodology, interviews were conducted with 19 women experiencing an uncomplicated first pregnancy, at two timepoints in their third trimester...
December 26, 2017: Women and Birth: Journal of the Australian College of Midwives
https://www.readbyqxmd.com/read/29284555/investigation-of-optimized-treatment-conditions-for-acoustic-transfection-technique-for-intracellular-delivery-of-macromolecules
#11
Min Gon Kim, Sangpil Yoon, Chi Tat Chiu, K Kirk Shung
Manipulation of cellular functions and structures by introduction of genetic materials inside cells has been one of the most prominent research areas in biomedicine. High-frequency ultrasound acoustic-transfection has recently been developed and confirmed by intracellular delivery of small molecules into HeLa cells at the single-cell level with high cell viability. After we proved the concept underlying the acoustic-transfection technique, treatment conditions for different human cancer cell lines have been intensively investigated to further develop acoustic-transfection as a versatile and adaptable transfection method by satisfying the requirements of high-delivery efficiency and cell membrane permeability with minimal membrane disruption...
December 25, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29280168/resident-accuracy-of-musculoskeletal-palpation-with-ultrasound-verification
#12
Priyesh Mehta, Ethan B Rand, Christopher J Visco, James Wyss
OBJECTIVES: The purpose of this observational study was to determine the accuracy of musculoskeletal palpation of the medial joint line of the knee, medial patellar tendon, and posterior tibialis tendon verified by ultrasound imaging among physical medicine and rehabilitation residents. METHODS: Eighteen physical medicine and rehabilitation resident physicians at a single specialized institution were asked to identify the medial joint line of the knee, medial patellar tendon, and posterior tibialis tendon on 2 separate standardized patient models during a single data collection...
December 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29278611/utility-of-point-of-care-ultrasound-in-children-with-pulmonary-tuberculosis
#13
Sabine Bélard, Charlotte C Heuvelings, Ebrahim Banderker, Lindy Bateman, Tom Heller, Savvas Andronikou, Lesley Workman, Martin P Grobusch, Heather J Zar
BACKGROUND: Point-of-care ultrasound (POCUS) detects extra-pulmonary tuberculosis (EPTB) in HIV-infected adults but has not been evaluated in children despite their higher risk of EPTB. This study's aims were to investigate feasibility of POCUS for EPTB in children, frequency of POCUS findings suggestive of EPTB, and time to sonographic resolution of findings with treatment. METHODS: This prospective South African cohort study enrolled children with suspected PTB...
December 22, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29277451/acoustic-properties-of-small-animal-soft-tissue-in-the-frequency-range-12-32%C3%A2-mhz
#14
Adela Rabell-Montiel, Adrian J Thomson, Tom A Anderson, Stephen D Pye, Carmel M Moran
Quality assurance phantoms are made of tissue-mimicking materials (TMMs) the acoustic properties of which mimic those of soft tissue. However, the acoustic properties of many soft tissue types have not been measured at ultrasonic frequencies >9 MHz. With the increasing use of high-frequency ultrasound for both clinical and pre-clinical applications, it is of increasing interest to ensure that TMMs accurately reflect the acoustic properties of soft tissue at these higher frequencies. In this study, the acoustic properties of ex vivo brain, liver and kidney samples from 50 mice were assessed in the frequency range 12-32 MHz...
December 22, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29276160/management-and-outcome-of-reduced-fetal-movements-is-ultrasound-necessary
#15
Nasser Abu Awad, Thomas Jordan, Robert Mundle, Dan Farine
OBJECTIVE: To review the management and outcome of pregnancies of women presenting to obstetrical triage with decreased fetal movements (DFM). STUDY DESIGN: A retrospective review of women presenting with DFMs to two large Canadian obstetrical centres with a combined 9490 deliveries per year. The charts were reviewed for compliance with the Canadian guidelines for demographics (age, parity, GA, comorbidities, etc.), pregnancy management (admission vs. discharge, need to deliver), and pregnancy outcomes (mortality, morbidity, GA at delivery, Apgar scores, etc...
December 21, 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/29276083/-left-ventricular-hypertrophy-in-chronic-hemodialysis-patients-at-cnhu-hkm-of-cotonou
#16
Jacques Vigan, Séraphin Ahoui, Dominique Hounsou, Aline Céline Kpèhouédo Goudoté, Jeanne Vehounkpe Sacca
INTRODUCTION: Left ventricular hypertrophy (LVH) is a predictor of mortality in hemodialysis. It takes a very high proportion among cardiovascular complications. OBJECTIVE: It was to determine the frequency of LVH and identify its associated factors among chronic hemodialysis patients of CNHU-HKM. METHODS: This is a cross-sectional, descriptive and analytical, which took place 1st February to 31st October 2014. The sample consisted of patients aged over 15 years, chronic hemodialysis for at least 3 months...
December 21, 2017: Néphrologie & Thérapeutique
https://www.readbyqxmd.com/read/29275904/the-achilles-tendon-in-healthy-subjects-an-anthropometric-and-ultrasound-mapping-study
#17
Nick N Patel, Sameh A Labib
Ultrasonography is an inexpensive, fast, and reliable imaging technique widely used to assess the Achilles tendon. Although significant data exists regarding pathologic tendon changes, ultrasound data from healthy individuals are more limited. We aimed to better characterize ultrasound Achilles tendon measurements in healthy individuals and identify important correlating factors. The information collected included patient demographics, body habitus, activity level, foot dominance, and resting ankle angle. Ultrasound analysis was performed bilaterally on the Achilles tendons of 50 subjects using a high-frequency transducer to measure tendon width, thickness, cross-sectional area, and length...
December 21, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29275409/dynamic-observation-of-the-morphological-changes-in-paraurethral-ducts-infected-with-gonococci-in-men-before-and-after-ceftriaxone-therapy-using-high-frequency-ultrasound
#18
Wenge Fan, Qingsong Zhang, Xun Ye, Zhijiang Fan
OBJECTIVE: To observe the morphological changes in paraurethral ducts infected with gonococci in men before and after the administration of the ceftriaxone therapy using high-frequency ultrasound and determine its clinical significance. METHODS: Thirty-two male patients with gonococcal paraurethral duct infection were enrolled. Their lesions were examined using an ACUSON X300 ultrasound system before and after they were subjected to ceftriaxone therapy. RESULTS: The paraurethral duct was completely closed 3-4 days after ceftriaxone treatment in 30 patients...
December 22, 2017: Urologia Internationalis
https://www.readbyqxmd.com/read/29261545/the-effect-of-high-frequency-structured-expert-feedback-on-the-learning-curves-of-basic-interventional-ultrasound-skills-applied-to-regional-anesthesia
#19
Getúlio Rodrigues de Oliveira Filho, Francisco de Assis Caire Mettrau
BACKGROUND: Proficiency in needle-to-ultrasound beam alignment and accurate approach to structures are pivotal for ultrasound-guided regional anesthesia. This study evaluated the effects of high-frequency, structured expert feedback on simulation training of such abilities. METHODS: Forty-two subjects randomly allocated as controls or intervention participated in two 25-trial experiments. Experiment 1 consisted of inserting a needle into a bovine muscular phantom parallel to the ultrasound beam while maintaining full imaging of the needle...
December 19, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29260640/ultrasound-self-referral-does-not-increase-utilization-in-pediatric-urology
#20
Lesli Nicolay, Adam S Howe, Lane S Palmer
INTRODUCTION: Costs of radiologic imaging are rising. The goal of this study is to examine the utilization practices of pediatric urologists who have access to in-office ultrasound imaging when managing children with primary hydronephrosis. MATERIALS AND METHODS: A retrospective cross sectional study was performed of children ≤ 5 years old with an isolated diagnosis of hydronephrosis. Ultrasound utilization was evaluated by tallying the number of ultrasounds obtained during the time each child was followed...
December 2017: Canadian Journal of Urology
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